USB/Thunderbolt changes for 6.7-rc1

Here is the "big" set of USB and Thunderbolt changes for 6.7-rc1. Nothing really major in here, just lots of constant development for new hardware. Included in here are: - Thunderbolt (i.e. USB4) fixes for reported issues and support for new hardware types and devices - USB typec additions of new drivers and cleanups for some existing ones - xhci cleanups and expanded tracing support and some platform specific updates - USB "La Jolla Cove Adapter (LJCA)" support added, and the gpio, spi, and i2c drivers for that type of device (all acked by the respective subsystem maintainers.) - lots of USB gadget driver updates and cleanups - new USB dwc3 platforms supported, as well as other dwc3 fixes and cleanups - USB chipidea driver updates - other smaller driver cleanups and additions, full details in the shortlog All of these have been in the linux-next tree for a while with no reported problems, EXCEPT for some merge conflicts that you will run into in your tree. 2 of them are in device-tree files, which will be trivial to resolve (accept both sides), and the last in the drivers/gpio/gpio-ljca.c file, in the remove callback, resolution should be pretty trivial (take the version in this branch), see here: https://lore.kernel.org/all/20231016134159.11d8f849@canb.auug.org.au/ for details, or I can provide a resolved merge point if needed. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZUStew8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ykxgQCggUyfGo+JVV8XZVu5A9KwT6nr7mUAmwUgFxhZ khK77t0KqF4hjXryeaHa =iPd+ -----END PGP SIGNATURE----- Merge tag 'usb-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB/Thunderbolt updates from Greg KH: "Here is the "big" set of USB and Thunderbolt changes for 6.7-rc1. Nothing really major in here, just lots of constant development for new hardware. Included in here are: - Thunderbolt (i.e. USB4) fixes for reported issues and support for new hardware types and devices - USB typec additions of new drivers and cleanups for some existing ones - xhci cleanups and expanded tracing support and some platform specific updates - USB "La Jolla Cove Adapter (LJCA)" support added, and the gpio, spi, and i2c drivers for that type of device (all acked by the respective subsystem maintainers.) - lots of USB gadget driver updates and cleanups - new USB dwc3 platforms supported, as well as other dwc3 fixes and cleanups - USB chipidea driver updates - other smaller driver cleanups and additions, full details in the shortlog All of these have been in the linux-next tree for a while with no reported problems" * tag 'usb-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (167 commits) usb: gadget: uvc: Add missing initialization of ssp config descriptor usb: storage: set 1.50 as the lower bcdDevice for older "Super Top" compatibility usb: raw-gadget: report suspend, resume, reset, and disconnect events usb: raw-gadget: don't disable device if usb_ep_queue fails usb: raw-gadget: properly handle interrupted requests usb:cdnsp: remove TRB_FLUSH_ENDPOINT command usb: gadget: aspeed_udc: Convert to platform remove callback returning void dt-bindings: usb: fsa4480: Add compatible for OCP96011 usb: typec: fsa4480: Add support to swap SBU orientation dt-bindings: usb: fsa4480: Add data-lanes property to endpoint usb: typec: tcpm: Fix NULL pointer dereference in tcpm_pd_svdm() Revert "dt-bindings: usb: Add bindings for multiport properties on DWC3 controller" Revert "dt-bindings: usb: qcom,dwc3: Add bindings for SC8280 Multiport" thunderbolt: Fix one kernel-doc comment usb: gadget: f_ncm: Always set current gadget in ncm_bind() usb: core: Remove duplicated check in usb_hub_create_port_device usb: typec: tcpm: Add additional checks for contaminant arm64: dts: rockchip: rk3588s: Add USB3 host controller usb: dwc3: add optional PHY interface clocks dt-bindings: usb: add rk3588 compatible to rockchip,dwc3 ...
2025-01-01 10:43:43 +00:00 · 2023-11-03 16:00:42 -10:00 · 2023-11-03 16:00:42 -10:00 · 2c40c1c6ad
commit 2c40c1c6ad
parent 1f24458a10 c70793fb76
150 changed files with 7061 additions and 1327 deletions
--- a/Documentation/ABI/testing/configfs-usb-gadget-uac2
+++ b/Documentation/ABI/testing/configfs-usb-gadget-uac2
@ -35,4 +35,6 @@ Description:
 		req_number		the number of pre-allocated requests
 					for both capture and playback
 		function_name		name of the interface
+		c_terminal_type		code of the capture terminal type
+		p_terminal_type		code of the playback terminal type
 		=====================	=======================================
--- a/Documentation/ABI/testing/sysfs-bus-usb
+++ b/Documentation/ABI/testing/sysfs-bus-usb
@ -313,6 +313,15 @@ Description:
 		Inter-Chip SSIC devices support asymmetric lanes up to 4 lanes per
 		direction. Devices before USB 3.2 are single lane (tx_lanes = 1)

+What:		/sys/bus/usb/devices/.../typec
+Date:		November 2023
+Contact:	Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+		Symlink to the USB Type-C partner device. USB Type-C partner
+		represents the component that communicates over the
+		Configuration Channel (CC signal on USB Type-C connectors and
+		cables) with the local port.
+
 What:		/sys/bus/usb/devices/usbX/bAlternateSetting
 Description:
 		The current interface alternate setting number, in decimal.
--- a/Documentation/ABI/testing/sysfs-class-usb_power_delivery
+++ b/Documentation/ABI/testing/sysfs-class-usb_power_delivery
@ -124,6 +124,13 @@ Contact:	Heikki Krogerus <heikki.krogerus@linux.intel.com>
 Description:
 		The voltage the supply supports in millivolts.

+What:		/sys/class/usb_power_delivery/.../source-capabilities/<position>:fixed_supply/peak_current
+Date:		October 2023
+Contact:	Heikki Krogerus <heikki.krogerus@linux.intel.com>
+Description:
+		This file shows the value of the Fixed Power Source Peak Current
+		Capability field.
+
 What:		/sys/class/usb_power_delivery/.../source-capabilities/<position>:fixed_supply/maximum_current
 Date:		May 2022
 Contact:	Heikki Krogerus <heikki.krogerus@linux.intel.com>
--- a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb3-uni-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb3-uni-phy.yaml
@ -20,6 +20,7 @@ properties:
      - qcom,qcm2290-qmp-usb3-phy
      - qcom,sa8775p-qmp-usb3-uni-phy
      - qcom,sc8280xp-qmp-usb3-uni-phy
+      - qcom,sdx75-qmp-usb3-uni-phy
      - qcom,sm6115-qmp-usb3-phy

  reg:
@ -75,6 +76,7 @@ allOf:
          contains:
            enum:
              - qcom,ipq9574-qmp-usb3-phy
+              - qcom,sdx75-qmp-usb3-uni-phy
    then:
      properties:
        clock-names:
--- a/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-phy.yaml
@ -14,7 +14,12 @@ description:

 properties:
  compatible:
-    const: qcom,sm8550-snps-eusb2-phy
+    oneOf:
+      - items:
+          - enum:
+              - qcom,sdx75-snps-eusb2-phy
+          - const: qcom,sm8550-snps-eusb2-phy
+      - const: qcom,sm8550-snps-eusb2-phy

  reg:
    maxItems: 1
--- a/Documentation/devicetree/bindings/soc/qcom/qcom,pmic-glink.yaml
+++ b/Documentation/devicetree/bindings/soc/qcom/qcom,pmic-glink.yaml
@ -35,6 +35,12 @@ properties:
  '#size-cells':
    const: 0

+  orientation-gpios:
+    description: Array of input gpios for the Type-C connector orientation indication.
+      The GPIO indication is used to detect the orientation of the Type-C connector.
+      The array should contain a gpio entry for each PMIC Glink connector, in reg order.
+      It is defined that GPIO active level means "CC2" or Reversed/Flipped orientation.
+
 patternProperties:
  '^connector@\d$':
    $ref: /schemas/connector/usb-connector.yaml#
@ -44,6 +50,19 @@ patternProperties:
 required:
  - compatible

+allOf:
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              enum:
+                - qcom,sm8450-pmic-glink
+                - qcom,sm8550-pmic-glink
+    then:
+      properties:
+        orientation-gpios: false
+
 additionalProperties: false

 examples:
--- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml
+++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml
@ -15,7 +15,9 @@ properties:
    oneOf:
      - enum:
          - chipidea,usb2
+          - fsl,imx27-usb
          - lsi,zevio-usb
+          - nuvoton,npcm750-udc
          - nvidia,tegra20-ehci
          - nvidia,tegra20-udc
          - nvidia,tegra30-ehci
@ -66,6 +68,10 @@ properties:
      - items:
          - const: xlnx,zynq-usb-2.20a
          - const: chipidea,usb2
+      - items:
+          - enum:
+              - nuvoton,npcm845-udc
+          - const: nuvoton,npcm750-udc

  reg:
    minItems: 1
@ -388,6 +394,7 @@ allOf:
            enum:
              - chipidea,usb2
              - lsi,zevio-usb
+              - nuvoton,npcm750-udc
              - nvidia,tegra20-udc
              - nvidia,tegra30-udc
              - nvidia,tegra114-udc
--- a/Documentation/devicetree/bindings/usb/fcs,fsa4480.yaml
+++ b/Documentation/devicetree/bindings/usb/fcs,fsa4480.yaml
@ -11,8 +11,12 @@ maintainers:

 properties:
  compatible:
-    enum:
-      - fcs,fsa4480
+    oneOf:
+      - const: fcs,fsa4480
+      - items:
+          - enum:
+              - ocs,ocp96011
+          - const: fcs,fsa4480

  reg:
    maxItems: 1
@ -32,10 +36,43 @@ properties:
    type: boolean

  port:
-    $ref: /schemas/graph.yaml#/properties/port
+    $ref: /schemas/graph.yaml#/$defs/port-base
    description:
      A port node to link the FSA4480 to a TypeC controller for the purpose of
      handling altmode muxing and orientation switching.
+    unevaluatedProperties: false
+
+    properties:
+      endpoint:
+        $ref: /schemas/graph.yaml#/$defs/endpoint-base
+        unevaluatedProperties: false
+
+        properties:
+          data-lanes:
+            $ref: /schemas/types.yaml#/definitions/uint32-array
+            description:
+              Specifies how the AUX+/- lines are connected to SBU1/2.
+            oneOf:
+              - items:
+                  - const: 0
+                  - const: 1
+                description: |
+                  Default AUX/SBU layout (FSA4480)
+                  - AUX+ connected to SBU2
+                  - AUX- connected to SBU1
+                  Default AUX/SBU layout (OCP96011)
+                  - AUX+ connected to SBU1
+                  - AUX- connected to SBU2
+              - items:
+                  - const: 1
+                  - const: 0
+                description: |
+                  Swapped AUX/SBU layout (FSA4480)
+                  - AUX+ connected to SBU1
+                  - AUX- connected to SBU2
+                  Swapped AUX/SBU layout (OCP96011)
+                  - AUX+ connected to SBU2
+                  - AUX- connected to SBU1

 required:
  - compatible
--- a/Documentation/devicetree/bindings/usb/genesys,gl850g.yaml
+++ b/Documentation/devicetree/bindings/usb/genesys,gl850g.yaml
@ -4,7 +4,7 @@
 $id: http://devicetree.org/schemas/usb/genesys,gl850g.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#

-title: Genesys Logic GL850G USB 2.0 hub controller
+title: Genesys Logic USB hub controller

 maintainers:
  - Icenowy Zheng <uwu@icenowy.me>
@ -18,6 +18,7 @@ properties:
      - usb5e3,608
      - usb5e3,610
      - usb5e3,620
+      - usb5e3,626

  reg: true

--- a/Documentation/devicetree/bindings/usb/gpio-sbu-mux.yaml
+++ b/Documentation/devicetree/bindings/usb/gpio-sbu-mux.yaml
@ -19,6 +19,7 @@ properties:
  compatible:
    items:
      - enum:
+          - nxp,cbdtu02043
          - onnn,fsusb43l10x
          - pericom,pi3usb102
      - const: gpio-sbu-mux
@ -50,7 +51,6 @@ required:
  - compatible
  - enable-gpios
  - select-gpios
-  - mode-switch
  - orientation-switch
  - port

--- a/Documentation/devicetree/bindings/usb/nxp,ptn36502.yaml
+++ b/Documentation/devicetree/bindings/usb/nxp,ptn36502.yaml
@ -0,0 +1,94 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/nxp,ptn36502.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP PTN36502 Type-C USB 3.1 Gen 1 and DisplayPort v1.2 combo redriver
+
+maintainers:
+  - Luca Weiss <luca.weiss@fairphone.com>
+
+properties:
+  compatible:
+    enum:
+      - nxp,ptn36502
+
+  reg:
+    maxItems: 1
+
+  vdd18-supply:
+    description: Power supply for VDD18 pin
+
+  retimer-switch:
+    description: Flag the port as possible handle of SuperSpeed signals retiming
+    type: boolean
+
+  orientation-switch:
+    description: Flag the port as possible handler of orientation switching
+    type: boolean
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Super Speed (SS) Output endpoint to the Type-C connector
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Super Speed (SS) Input endpoint from the Super-Speed PHY
+
+      port@2:
+        $ref: /schemas/graph.yaml#/properties/port
+        description:
+          Sideband Use (SBU) AUX lines endpoint to the Type-C connector for the purpose of
+          handling altmode muxing and orientation switching.
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        typec-mux@1a {
+            compatible = "nxp,ptn36502";
+            reg = <0x1a>;
+
+            vdd18-supply = <&usb_redrive_1v8>;
+
+            retimer-switch;
+            orientation-switch;
+
+            ports {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                port@0 {
+                    reg = <0>;
+                    usb_con_ss: endpoint {
+                        remote-endpoint = <&typec_con_ss>;
+                    };
+                };
+                port@1 {
+                    reg = <1>;
+                    phy_con_ss: endpoint {
+                        remote-endpoint = <&usb_phy_ss>;
+                    };
+                };
+                port@2 {
+                    reg = <2>;
+                    usb_con_sbu: endpoint {
+                        remote-endpoint = <&typec_dp_aux>;
+                    };
+                };
+            };
+        };
+    };
+...
--- a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml
@ -14,6 +14,7 @@ properties:
    items:
      - enum:
          - qcom,ipq4019-dwc3
+          - qcom,ipq5018-dwc3
          - qcom,ipq5332-dwc3
          - qcom,ipq6018-dwc3
          - qcom,ipq8064-dwc3
@ -34,6 +35,7 @@ properties:
          - qcom,sdm845-dwc3
          - qcom,sdx55-dwc3
          - qcom,sdx65-dwc3
+          - qcom,sdx75-dwc3
          - qcom,sm4250-dwc3
          - qcom,sm6115-dwc3
          - qcom,sm6125-dwc3
@ -180,6 +182,8 @@ allOf:
              - qcom,sdm670-dwc3
              - qcom,sdm845-dwc3
              - qcom,sdx55-dwc3
+              - qcom,sdx65-dwc3
+              - qcom,sdx75-dwc3
              - qcom,sm6350-dwc3
    then:
      properties:
@ -238,6 +242,7 @@ allOf:
        compatible:
          contains:
            enum:
+              - qcom,ipq5018-dwc3
              - qcom,ipq5332-dwc3
              - qcom,msm8994-dwc3
              - qcom,qcs404-dwc3
@ -363,6 +368,7 @@ allOf:
              - qcom,sdm845-dwc3
              - qcom,sdx55-dwc3
              - qcom,sdx65-dwc3
+              - qcom,sdx75-dwc3
              - qcom,sm4250-dwc3
              - qcom,sm6125-dwc3
              - qcom,sm6350-dwc3
@ -411,6 +417,7 @@ allOf:
        compatible:
          contains:
            enum:
+              - qcom,ipq5018-dwc3
              - qcom,ipq5332-dwc3
              - qcom,sdm660-dwc3
    then:
--- a/Documentation/devicetree/bindings/usb/realtek,rtd-dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/realtek,rtd-dwc3.yaml
@ -0,0 +1,80 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2023 Realtek Semiconductor Corporation
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/realtek,rtd-dwc3.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Realtek DWC3 USB SoC Controller Glue
+
+maintainers:
+  - Stanley Chang <stanley_chang@realtek.com>
+
+description:
+  The Realtek DHC SoC embeds a DWC3 USB IP Core configured for USB 2.0
+  and USB 3.0 in host or dual-role mode.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - realtek,rtd1295-dwc3
+          - realtek,rtd1315e-dwc3
+          - realtek,rtd1319-dwc3
+          - realtek,rtd1319d-dwc3
+          - realtek,rtd1395-dwc3
+          - realtek,rtd1619-dwc3
+          - realtek,rtd1619b-dwc3
+      - const: realtek,rtd-dwc3
+
+  reg:
+    items:
+      - description: Address and length of register set for wrapper of dwc3 core.
+      - description: Address and length of register set for pm control.
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 1
+
+  ranges: true
+
+patternProperties:
+  "^usb@[0-9a-f]+$":
+    $ref: snps,dwc3.yaml#
+    description: Required child node
+
+required:
+  - compatible
+  - reg
+  - "#address-cells"
+  - "#size-cells"
+  - ranges
+
+additionalProperties: false
+
+examples:
+  - |
+    usb@98013e00 {
+        compatible = "realtek,rtd1319d-dwc3", "realtek,rtd-dwc3";
+        reg = <0x98013e00 0x140>, <0x98013f60 0x4>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+
+        usb@98050000 {
+            compatible = "snps,dwc3";
+            reg = <0x98050000 0x9000>;
+            interrupts = <0 94 4>;
+            phys = <&usb2phy &usb3phy>;
+            phy-names = "usb2-phy", "usb3-phy";
+            dr_mode = "otg";
+            usb-role-switch;
+            role-switch-default-mode = "host";
+            snps,dis_u2_susphy_quirk;
+            snps,parkmode-disable-ss-quirk;
+            snps,parkmode-disable-hs-quirk;
+            maximum-speed = "high-speed";
+        };
+    };
--- a/Documentation/devicetree/bindings/usb/rockchip,dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/rockchip,dwc3.yaml
@ -20,9 +20,6 @@ description:
  Type-C PHY
  Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt

-allOf:
-  - $ref: snps,dwc3.yaml#
-
 select:
  properties:
    compatible:
@ -30,6 +27,7 @@ select:
        enum:
          - rockchip,rk3328-dwc3
          - rockchip,rk3568-dwc3
+          - rockchip,rk3588-dwc3
  required:
    - compatible

@ -39,6 +37,7 @@ properties:
      - enum:
          - rockchip,rk3328-dwc3
          - rockchip,rk3568-dwc3
+          - rockchip,rk3588-dwc3
      - const: snps,dwc3

  reg:
@ -58,7 +57,9 @@ properties:
          Master/Core clock, must to be >= 62.5 MHz for SS
          operation and >= 30MHz for HS operation
      - description:
-          Controller grf clock
+          Controller grf clock OR UTMI clock
+      - description:
+          PIPE clock

  clock-names:
    minItems: 3
@ -66,7 +67,10 @@ properties:
      - const: ref_clk
      - const: suspend_clk
      - const: bus_clk
-      - const: grf_clk
+      - enum:
+          - grf_clk
+          - utmi
+      - const: pipe

  power-domains:
    maxItems: 1
@ -86,6 +90,52 @@ required:
  - clocks
  - clock-names

+allOf:
+  - $ref: snps,dwc3.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: rockchip,rk3328-dwc3
+    then:
+      properties:
+        clocks:
+          minItems: 3
+          maxItems: 4
+        clock-names:
+          minItems: 3
+          items:
+            - const: ref_clk
+            - const: suspend_clk
+            - const: bus_clk
+            - const: grf_clk
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: rockchip,rk3568-dwc3
+    then:
+      properties:
+        clocks:
+          maxItems: 3
+        clock-names:
+          maxItems: 3
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: rockchip,rk3588-dwc3
+    then:
+      properties:
+        clock-names:
+          minItems: 3
+          items:
+            - const: ref_clk
+            - const: suspend_clk
+            - const: bus_clk
+            - const: utmi
+            - const: pipe
+
 examples:
  - |
    #include <dt-bindings/clock/rk3328-cru.h>
--- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
@ -310,6 +310,62 @@ properties:
    maximum: 62
    deprecated: true

+  snps,rx-thr-num-pkt:
+    description:
+      USB RX packet threshold count. In host mode, this field specifies
+      the space that must be available in the RX FIFO before the core can
+      start the corresponding USB RX transaction (burst).
+      In device mode, this field specifies the space that must be
+      available in the RX FIFO before the core can send ERDY for a
+      flow-controlled endpoint. It is only used for SuperSpeed.
+      The valid values for this field are from 1 to 15. (DWC3 SuperSpeed
+      USB 3.0 Controller Databook)
+    $ref: /schemas/types.yaml#/definitions/uint8
+    minimum: 1
+    maximum: 15
+
+  snps,rx-max-burst:
+    description:
+      Max USB RX burst size. In host mode, this field specifies the
+      Maximum Bulk IN burst the DWC_usb3 core can perform. When the system
+      bus is slower than the USB, RX FIFO can overrun during a long burst.
+      You can program a smaller value to this field to limit the RX burst
+      size that the core can perform. It only applies to SS Bulk,
+      Isochronous, and Interrupt IN endpoints in the host mode.
+      In device mode, this field specifies the NUMP value that is sent in
+      ERDY for an OUT endpoint.
+      The valid values for this field are from 1 to 16. (DWC3 SuperSpeed
+      USB 3.0 Controller Databook)
+    $ref: /schemas/types.yaml#/definitions/uint8
+    minimum: 1
+    maximum: 16
+
+  snps,tx-thr-num-pkt:
+    description:
+      USB TX packet threshold count. This field specifies the number of
+      packets that must be in the TXFIFO before the core can start
+      transmission for the corresponding USB transaction (burst).
+      This count is valid in both host and device modes. It is only used
+      for SuperSpeed operation.
+      Valid values are from 1 to 15. (DWC3 SuperSpeed USB 3.0 Controller
+      Databook)
+    $ref: /schemas/types.yaml#/definitions/uint8
+    minimum: 1
+    maximum: 15
+
+  snps,tx-max-burst:
+    description:
+      Max USB TX burst size. When the system bus is slower than the USB,
+      TX FIFO can underrun during a long burst. Program a smaller value
+      to this field to limit the TX burst size that the core can execute.
+      In Host mode, it only applies to SS Bulk, Isochronous, and Interrupt
+      OUT endpoints. This value is not used in device mode.
+      Valid values are from 1 to 16. (DWC3 SuperSpeed USB 3.0 Controller
+      Databook)
+    $ref: /schemas/types.yaml#/definitions/uint8
+    minimum: 1
+    maximum: 16
+
  snps,rx-thr-num-pkt-prd:
    description:
      Periodic ESS RX packet threshold count (host mode only). Set this and
--- a/Documentation/devicetree/bindings/usb/ti,tps6598x.yaml
+++ b/Documentation/devicetree/bindings/usb/ti,tps6598x.yaml
@ -20,8 +20,23 @@ properties:
    enum:
      - ti,tps6598x
      - apple,cd321x
+      - ti,tps25750
+
  reg:
-    maxItems: 1
+    minItems: 1
+    items:
+      - description: main PD controller address
+      - description: |
+          I2C slave address field in PBMs input data
+          which is used as the device address when writing the
+          patch for TPS25750.
+          The patch address can be any value except 0x00, 0x20,
+          0x21, 0x22, and 0x23
+
+  reg-names:
+    items:
+      - const: main
+      - const: patch-address

  wakeup-source: true

@ -35,10 +50,42 @@ properties:
  connector:
    $ref: /schemas/connector/usb-connector.yaml#

+  firmware-name:
+    description: |
+      Should contain the name of the default patch binary
+      file located on the firmware search path which is
+      used to switch the controller into APP mode.
+      This is used when tps25750 doesn't have an EEPROM
+      connected to it.
+    maxItems: 1
+
 required:
  - compatible
  - reg

+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: ti,tps25750
+    then:
+      properties:
+        reg:
+          maxItems: 2
+
+        connector:
+          required:
+            - data-role
+
+      required:
+        - connector
+        - reg-names
+    else:
+      properties:
+        reg:
+          maxItems: 1
+
 additionalProperties: false

 examples:
@ -71,4 +118,36 @@ examples:
            };
        };
    };
+
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        typec@21 {
+            compatible = "ti,tps25750";
+            reg = <0x21>, <0x0f>;
+            reg-names = "main", "patch-address";
+
+            interrupt-parent = <&msmgpio>;
+            interrupts = <100 IRQ_TYPE_LEVEL_LOW>;
+            interrupt-names = "irq";
+            firmware-name = "tps25750.bin";
+
+            pinctrl-names = "default";
+            pinctrl-0 = <&typec_pins>;
+
+            typec_con0: connector {
+                compatible = "usb-c-connector";
+                label = "USB-C";
+                data-role = "dual";
+                port {
+                    typec_ep0: endpoint {
+                        remote-endpoint = <&otg_ep>;
+                    };
+                };
+            };
+        };
+    };
 ...
--- a/Documentation/devicetree/bindings/usb/vialab,vl817.yaml
+++ b/Documentation/devicetree/bindings/usb/vialab,vl817.yaml
@ -37,7 +37,6 @@ properties:
 required:
  - compatible
  - reg
-  - reset-gpios
  - vdd-supply
  - peer-hub

--- a/Documentation/driver-api/usb/dma.rst
+++ b/Documentation/driver-api/usb/dma.rst
@ -93,44 +93,18 @@ DMA address space of the device.  However, most buffers passed to your
 driver can safely be used with such DMA mapping.  (See the first section
 of Documentation/core-api/dma-api-howto.rst, titled "What memory is DMA-able?")

- When you're using scatterlists, you can map everything at once.  On some
-  systems, this kicks in an IOMMU and turns the scatterlists into single
-  DMA transactions::
+- When you have the scatterlists which have been mapped for the USB controller,
+  you could use the new ``usb_sg_*()`` calls, which would turn scatterlist
+  into URBs::

-	int usb_buffer_map_sg (struct usb_device *dev, unsigned pipe,
-		struct scatterlist *sg, int nents);
+	int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev,
+		unsigned pipe, unsigned	period, struct scatterlist *sg,
+		int nents, size_t length, gfp_t mem_flags);

-	void usb_buffer_dmasync_sg (struct usb_device *dev, unsigned pipe,
-		struct scatterlist *sg, int n_hw_ents);
+	void usb_sg_wait(struct usb_sg_request *io);

-	void usb_buffer_unmap_sg (struct usb_device *dev, unsigned pipe,
-		struct scatterlist *sg, int n_hw_ents);
+	void usb_sg_cancel(struct usb_sg_request *io);

-  It's probably easier to use the new ``usb_sg_*()`` calls, which do the DMA
-  mapping and apply other tweaks to make scatterlist i/o be fast.
-
- Some drivers may prefer to work with the model that they're mapping large
-  buffers, synchronizing their safe re-use.  (If there's no re-use, then let
-  usbcore do the map/unmap.)  Large periodic transfers make good examples
-  here, since it's cheaper to just synchronize the buffer than to unmap it
-  each time an urb completes and then re-map it on during resubmission.
-
-  These calls all work with initialized urbs:  ``urb->dev``, ``urb->pipe``,
-  ``urb->transfer_buffer``, and ``urb->transfer_buffer_length`` must all be
-  valid when these calls are used (``urb->setup_packet`` must be valid too
-  if urb is a control request)::
-
-	struct urb *usb_buffer_map (struct urb *urb);
-
-	void usb_buffer_dmasync (struct urb *urb);
-
-	void usb_buffer_unmap (struct urb *urb);
-
-  The calls manage ``urb->transfer_dma`` for you, and set
-  ``URB_NO_TRANSFER_DMA_MAP`` so that usbcore won't map or unmap the buffer.
-  They cannot be used for setup_packet buffers in control requests.
-
-Note that several of those interfaces are currently commented out, since
-they don't have current users.  See the source code.  Other than the dmasync
-calls (where the underlying DMA primitives have changed), most of them can
-easily be commented back in if you want to use them.
+  When the USB controller doesn't support DMA, the ``usb_sg_init()`` would try
+  to submit URBs in PIO way as long as the page in scatterlists is not in the
+  Highmem, which could be very rare in modern architectures.
--- a/Documentation/usb/gadget-testing.rst
+++ b/Documentation/usb/gadget-testing.rst
@ -755,6 +755,8 @@ The uac2 function provides these attributes in its function directory:
 	req_number       the number of pre-allocated request for both capture
 	                 and playback
 	function_name    name of the interface
+	c_terminal_type  code of the capture terminal type
+	p_terminal_type  code of the playback terminal type
 	================ ====================================================

 The attributes have sane default values.
--- a/arch/arm64/boot/dts/qcom/sm8550-mtp.dts
+++ b/arch/arm64/boot/dts/qcom/sm8550-mtp.dts
@ -59,6 +59,7 @@ pmic-glink {
 		compatible = "qcom,sm8550-pmic-glink", "qcom,pmic-glink";
 		#address-cells = <1>;
 		#size-cells = <0>;
+		orientation-gpios = <&tlmm 11 GPIO_ACTIVE_HIGH>;

 		connector@0 {
 			compatible = "usb-c-connector";
--- a/arch/arm64/boot/dts/qcom/sm8550-qrd.dts
+++ b/arch/arm64/boot/dts/qcom/sm8550-qrd.dts
@ -77,6 +77,7 @@ pmic-glink {
 		compatible = "qcom,sm8550-pmic-glink", "qcom,pmic-glink";
 		#address-cells = <1>;
 		#size-cells = <0>;
+		orientation-gpios = <&tlmm 11 GPIO_ACTIVE_HIGH>;

 		connector@0 {
 			compatible = "usb-c-connector";
--- a/arch/arm64/boot/dts/rockchip/rk3588s.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3588s.dtsi
@ -443,6 +443,27 @@ usb_host1_ohci: usb@fc8c0000 {
 		status = "disabled";
 	};

+	usb_host2_xhci: usb@fcd00000 {
+		compatible = "rockchip,rk3588-dwc3", "snps,dwc3";
+		reg = <0x0 0xfcd00000 0x0 0x400000>;
+		interrupts = <GIC_SPI 222 IRQ_TYPE_LEVEL_HIGH 0>;
+		clocks = <&cru REF_CLK_USB3OTG2>, <&cru SUSPEND_CLK_USB3OTG2>,
+			 <&cru ACLK_USB3OTG2>, <&cru CLK_UTMI_OTG2>,
+			 <&cru CLK_PIPEPHY2_PIPE_U3_G>;
+		clock-names = "ref_clk", "suspend_clk", "bus_clk", "utmi", "pipe";
+		dr_mode = "host";
+		phys = <&combphy2_psu PHY_TYPE_USB3>;
+		phy-names = "usb3-phy";
+		phy_type = "utmi_wide";
+		resets = <&cru SRST_A_USB3OTG2>;
+		snps,dis_enblslpm_quirk;
+		snps,dis-u2-freeclk-exists-quirk;
+		snps,dis-del-phy-power-chg-quirk;
+		snps,dis-tx-ipgap-linecheck-quirk;
+		snps,dis_rxdet_inp3_quirk;
+		status = "disabled";
+	};
+
 	pmu1grf: syscon@fd58a000 {
 		compatible = "rockchip,rk3588-pmugrf", "syscon", "simple-mfd";
 		reg = <0x0 0xfd58a000 0x0 0x10000>;
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@ -1312,9 +1312,9 @@ config GPIO_KEMPLD

 config GPIO_LJCA
 	tristate "INTEL La Jolla Cove Adapter GPIO support"
-	depends on MFD_LJCA
+	depends on USB_LJCA
 	select GPIOLIB_IRQCHIP
-	default MFD_LJCA
+	default USB_LJCA
 	help
 	  Select this option to enable GPIO driver for the INTEL
 	  La Jolla Cove Adapter (LJCA) board.
--- a/drivers/gpio/gpio-ljca.c
+++ b/drivers/gpio/gpio-ljca.c
@ -6,6 +6,7 @@
 */

 #include <linux/acpi.h>
+#include <linux/auxiliary_bus.h>
 #include <linux/bitfield.h>
 #include <linux/bitops.h>
 #include <linux/dev_printk.h>
@ -13,19 +14,18 @@
 #include <linux/irq.h>
 #include <linux/kernel.h>
 #include <linux/kref.h>
-#include <linux/mfd/ljca.h>
 #include <linux/module.h>
-#include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/types.h>
+#include <linux/usb/ljca.h>

 /* GPIO commands */
-#define LJCA_GPIO_CONFIG	1
-#define LJCA_GPIO_READ		2
-#define LJCA_GPIO_WRITE		3
-#define LJCA_GPIO_INT_EVENT	4
-#define LJCA_GPIO_INT_MASK	5
-#define LJCA_GPIO_INT_UNMASK	6
+#define LJCA_GPIO_CONFIG		1
+#define LJCA_GPIO_READ			2
+#define LJCA_GPIO_WRITE			3
+#define LJCA_GPIO_INT_EVENT		4
+#define LJCA_GPIO_INT_MASK		5
+#define LJCA_GPIO_INT_UNMASK		6

 #define LJCA_GPIO_CONF_DISABLE		BIT(0)
 #define LJCA_GPIO_CONF_INPUT		BIT(1)
@ -36,45 +36,49 @@
 #define LJCA_GPIO_CONF_INTERRUPT	BIT(6)
 #define LJCA_GPIO_INT_TYPE		BIT(7)

-#define LJCA_GPIO_CONF_EDGE	FIELD_PREP(LJCA_GPIO_INT_TYPE, 1)
-#define LJCA_GPIO_CONF_LEVEL	FIELD_PREP(LJCA_GPIO_INT_TYPE, 0)
+#define LJCA_GPIO_CONF_EDGE		FIELD_PREP(LJCA_GPIO_INT_TYPE, 1)
+#define LJCA_GPIO_CONF_LEVEL		FIELD_PREP(LJCA_GPIO_INT_TYPE, 0)

 /* Intentional overlap with PULLUP / PULLDOWN */
-#define LJCA_GPIO_CONF_SET	BIT(3)
-#define LJCA_GPIO_CONF_CLR	BIT(4)
+#define LJCA_GPIO_CONF_SET		BIT(3)
+#define LJCA_GPIO_CONF_CLR		BIT(4)

-struct gpio_op {
+#define LJCA_GPIO_BUF_SIZE		60u
+
+struct ljca_gpio_op {
 	u8 index;
 	u8 value;
 } __packed;

-struct gpio_packet {
+struct ljca_gpio_packet {
 	u8 num;
-	struct gpio_op item[];
+	struct ljca_gpio_op item[] __counted_by(num);
 } __packed;

-#define LJCA_GPIO_BUF_SIZE 60
 struct ljca_gpio_dev {
-	struct platform_device *pdev;
+	struct ljca_client *ljca;
 	struct gpio_chip gc;
 	struct ljca_gpio_info *gpio_info;
 	DECLARE_BITMAP(unmasked_irqs, LJCA_MAX_GPIO_NUM);
 	DECLARE_BITMAP(enabled_irqs, LJCA_MAX_GPIO_NUM);
 	DECLARE_BITMAP(reenable_irqs, LJCA_MAX_GPIO_NUM);
+	DECLARE_BITMAP(output_enabled, LJCA_MAX_GPIO_NUM);
 	u8 *connect_mode;
-	/* mutex to protect irq bus */
+	/* protect irq bus */
 	struct mutex irq_lock;
 	struct work_struct work;
-	/* lock to protect package transfer to Hardware */
+	/* protect package transfer to hardware */
 	struct mutex trans_lock;

 	u8 obuf[LJCA_GPIO_BUF_SIZE];
 	u8 ibuf[LJCA_GPIO_BUF_SIZE];
 };

-static int gpio_config(struct ljca_gpio_dev *ljca_gpio, u8 gpio_id, u8 config)
+static int ljca_gpio_config(struct ljca_gpio_dev *ljca_gpio, u8 gpio_id,
+			    u8 config)
 {
-	struct gpio_packet *packet = (struct gpio_packet *)ljca_gpio->obuf;
+	struct ljca_gpio_packet *packet =
+				(struct ljca_gpio_packet *)ljca_gpio->obuf;
 	int ret;

 	mutex_lock(&ljca_gpio->trans_lock);
@ -82,43 +86,43 @@ static int gpio_config(struct ljca_gpio_dev *ljca_gpio, u8 gpio_id, u8 config)
 	packet->item[0].value = config | ljca_gpio->connect_mode[gpio_id];
 	packet->num = 1;

-	ret = ljca_transfer(ljca_gpio->gpio_info->ljca, LJCA_GPIO_CONFIG, packet,
-			    struct_size(packet, item, packet->num), NULL, NULL);
+	ret = ljca_transfer(ljca_gpio->ljca, LJCA_GPIO_CONFIG, (u8 *)packet,
+			    struct_size(packet, item, packet->num), NULL, 0);
 	mutex_unlock(&ljca_gpio->trans_lock);
-	return ret;
+
+	return ret < 0 ? ret : 0;
 }

 static int ljca_gpio_read(struct ljca_gpio_dev *ljca_gpio, u8 gpio_id)
 {
-	struct gpio_packet *packet = (struct gpio_packet *)ljca_gpio->obuf;
-	struct gpio_packet *ack_packet = (struct gpio_packet *)ljca_gpio->ibuf;
-	unsigned int ibuf_len = LJCA_GPIO_BUF_SIZE;
+	struct ljca_gpio_packet *ack_packet =
+				(struct ljca_gpio_packet *)ljca_gpio->ibuf;
+	struct ljca_gpio_packet *packet =
+				(struct ljca_gpio_packet *)ljca_gpio->obuf;
 	int ret;

 	mutex_lock(&ljca_gpio->trans_lock);
 	packet->num = 1;
 	packet->item[0].index = gpio_id;
-	ret = ljca_transfer(ljca_gpio->gpio_info->ljca, LJCA_GPIO_READ, packet,
-			    struct_size(packet, item, packet->num), ljca_gpio->ibuf, &ibuf_len);
-	if (ret)
-		goto out_unlock;
+	ret = ljca_transfer(ljca_gpio->ljca, LJCA_GPIO_READ, (u8 *)packet,
+			    struct_size(packet, item, packet->num),
+			    ljca_gpio->ibuf, LJCA_GPIO_BUF_SIZE);

-	if (!ibuf_len || ack_packet->num != packet->num) {
-		dev_err(&ljca_gpio->pdev->dev, "failed gpio_id:%u %u", gpio_id, ack_packet->num);
-		ret = -EIO;
+	if (ret <= 0 || ack_packet->num != packet->num) {
+		dev_err(&ljca_gpio->ljca->auxdev.dev,
+			"read package error, gpio_id: %u num: %u ret: %d\n",
+			gpio_id, ack_packet->num, ret);
+		ret = ret < 0 ? ret : -EIO;
 	}
-
-out_unlock:
 	mutex_unlock(&ljca_gpio->trans_lock);
-	if (ret)
-		return ret;
-	return ack_packet->item[0].value > 0;
+
+	return ret < 0 ? ret : ack_packet->item[0].value > 0;
 }

-static int ljca_gpio_write(struct ljca_gpio_dev *ljca_gpio, u8 gpio_id,
-			   int value)
+static int ljca_gpio_write(struct ljca_gpio_dev *ljca_gpio, u8 gpio_id, int value)
 {
-	struct gpio_packet *packet = (struct gpio_packet *)ljca_gpio->obuf;
+	struct ljca_gpio_packet *packet =
+			(struct ljca_gpio_packet *)ljca_gpio->obuf;
 	int ret;

 	mutex_lock(&ljca_gpio->trans_lock);
@ -126,10 +130,11 @@ static int ljca_gpio_write(struct ljca_gpio_dev *ljca_gpio, u8 gpio_id,
 	packet->item[0].index = gpio_id;
 	packet->item[0].value = value & 1;

-	ret = ljca_transfer(ljca_gpio->gpio_info->ljca, LJCA_GPIO_WRITE, packet,
-			    struct_size(packet, item, packet->num), NULL, NULL);
+	ret = ljca_transfer(ljca_gpio->ljca, LJCA_GPIO_WRITE, (u8 *)packet,
+			    struct_size(packet, item, packet->num), NULL, 0);
 	mutex_unlock(&ljca_gpio->trans_lock);
-	return ret;
+
+	return ret < 0 ? ret : 0;
 }

 static int ljca_gpio_get_value(struct gpio_chip *chip, unsigned int offset)
@ -147,16 +152,24 @@ static void ljca_gpio_set_value(struct gpio_chip *chip, unsigned int offset,

 	ret = ljca_gpio_write(ljca_gpio, offset, val);
 	if (ret)
-		dev_err(chip->parent, "offset:%u val:%d set value failed %d\n", offset, val, ret);
+		dev_err(chip->parent,
+			"set value failed offset: %u val: %d ret: %d\n",
+			offset, val, ret);
 }

-static int ljca_gpio_direction_input(struct gpio_chip *chip,
-				     unsigned int offset)
+static int ljca_gpio_direction_input(struct gpio_chip *chip, unsigned int offset)
 {
 	struct ljca_gpio_dev *ljca_gpio = gpiochip_get_data(chip);
 	u8 config = LJCA_GPIO_CONF_INPUT | LJCA_GPIO_CONF_CLR;
+	int ret;

-	return gpio_config(ljca_gpio, offset, config);
+	ret = ljca_gpio_config(ljca_gpio, offset, config);
+	if (ret)
+		return ret;
+
+	clear_bit(offset, ljca_gpio->output_enabled);
+
+	return 0;
 }

 static int ljca_gpio_direction_output(struct gpio_chip *chip,
@ -166,14 +179,26 @@ static int ljca_gpio_direction_output(struct gpio_chip *chip,
 	u8 config = LJCA_GPIO_CONF_OUTPUT | LJCA_GPIO_CONF_CLR;
 	int ret;

-	ret = gpio_config(ljca_gpio, offset, config);
+	ret = ljca_gpio_config(ljca_gpio, offset, config);
 	if (ret)
 		return ret;

 	ljca_gpio_set_value(chip, offset, val);
+	set_bit(offset, ljca_gpio->output_enabled);
+
 	return 0;
 }

+static int ljca_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
+{
+	struct ljca_gpio_dev *ljca_gpio = gpiochip_get_data(chip);
+
+	if (test_bit(offset, ljca_gpio->output_enabled))
+		return GPIO_LINE_DIRECTION_OUT;
+
+	return GPIO_LINE_DIRECTION_IN;
+}
+
 static int ljca_gpio_set_config(struct gpio_chip *chip, unsigned int offset,
 				unsigned long config)
 {
@ -197,7 +222,8 @@ static int ljca_gpio_set_config(struct gpio_chip *chip, unsigned int offset,
 	return 0;
 }

-static int ljca_gpio_init_valid_mask(struct gpio_chip *chip, unsigned long *valid_mask,
+static int ljca_gpio_init_valid_mask(struct gpio_chip *chip,
+				     unsigned long *valid_mask,
 				     unsigned int ngpios)
 {
 	struct ljca_gpio_dev *ljca_gpio = gpiochip_get_data(chip);
@ -208,15 +234,18 @@ static int ljca_gpio_init_valid_mask(struct gpio_chip *chip, unsigned long *vali
 	return 0;
 }

-static void ljca_gpio_irq_init_valid_mask(struct gpio_chip *chip, unsigned long *valid_mask,
+static void ljca_gpio_irq_init_valid_mask(struct gpio_chip *chip,
+					  unsigned long *valid_mask,
 					  unsigned int ngpios)
 {
 	ljca_gpio_init_valid_mask(chip, valid_mask, ngpios);
 }

-static int ljca_enable_irq(struct ljca_gpio_dev *ljca_gpio, int gpio_id, bool enable)
+static int ljca_enable_irq(struct ljca_gpio_dev *ljca_gpio, int gpio_id,
+			   bool enable)
 {
-	struct gpio_packet *packet = (struct gpio_packet *)ljca_gpio->obuf;
+	struct ljca_gpio_packet *packet =
+			(struct ljca_gpio_packet *)ljca_gpio->obuf;
 	int ret;

 	mutex_lock(&ljca_gpio->trans_lock);
@ -224,18 +253,20 @@ static int ljca_enable_irq(struct ljca_gpio_dev *ljca_gpio, int gpio_id, bool en
 	packet->item[0].index = gpio_id;
 	packet->item[0].value = 0;

-	ret = ljca_transfer(ljca_gpio->gpio_info->ljca,
-			    enable ? LJCA_GPIO_INT_UNMASK : LJCA_GPIO_INT_MASK, packet,
-			    struct_size(packet, item, packet->num), NULL, NULL);
+	ret = ljca_transfer(ljca_gpio->ljca,
+			    enable ? LJCA_GPIO_INT_UNMASK : LJCA_GPIO_INT_MASK,
+			    (u8 *)packet, struct_size(packet, item, packet->num),
+			    NULL, 0);
 	mutex_unlock(&ljca_gpio->trans_lock);
-	return ret;
+
+	return ret < 0 ? ret : 0;
 }

 static void ljca_gpio_async(struct work_struct *work)
 {
-	struct ljca_gpio_dev *ljca_gpio = container_of(work, struct ljca_gpio_dev, work);
-	int gpio_id;
-	int unmasked;
+	struct ljca_gpio_dev *ljca_gpio =
+			container_of(work, struct ljca_gpio_dev, work);
+	int gpio_id, unmasked;

 	for_each_set_bit(gpio_id, ljca_gpio->reenable_irqs, ljca_gpio->gc.ngpio) {
 		clear_bit(gpio_id, ljca_gpio->reenable_irqs);
@ -245,20 +276,22 @@ static void ljca_gpio_async(struct work_struct *work)
 	}
 }

-static void ljca_gpio_event_cb(void *context, u8 cmd, const void *evt_data, int len)
+static void ljca_gpio_event_cb(void *context, u8 cmd, const void *evt_data,
+			       int len)
 {
-	const struct gpio_packet *packet = evt_data;
+	const struct ljca_gpio_packet *packet = evt_data;
 	struct ljca_gpio_dev *ljca_gpio = context;
-	int i;
-	int irq;
+	int i, irq;

 	if (cmd != LJCA_GPIO_INT_EVENT)
 		return;

 	for (i = 0; i < packet->num; i++) {
-		irq = irq_find_mapping(ljca_gpio->gc.irq.domain, packet->item[i].index);
+		irq = irq_find_mapping(ljca_gpio->gc.irq.domain,
+				       packet->item[i].index);
 		if (!irq) {
-			dev_err(ljca_gpio->gc.parent, "gpio_id %u does not mapped to IRQ yet\n",
+			dev_err(ljca_gpio->gc.parent,
+				"gpio_id %u does not mapped to IRQ yet\n",
 				packet->item[i].index);
 			return;
 		}
@ -299,18 +332,22 @@ static int ljca_irq_set_type(struct irq_data *irqd, unsigned int type)
 	ljca_gpio->connect_mode[gpio_id] = LJCA_GPIO_CONF_INTERRUPT;
 	switch (type) {
 	case IRQ_TYPE_LEVEL_HIGH:
-		ljca_gpio->connect_mode[gpio_id] |= (LJCA_GPIO_CONF_LEVEL | LJCA_GPIO_CONF_PULLUP);
+		ljca_gpio->connect_mode[gpio_id] |=
+			(LJCA_GPIO_CONF_LEVEL | LJCA_GPIO_CONF_PULLUP);
 		break;
 	case IRQ_TYPE_LEVEL_LOW:
-		ljca_gpio->connect_mode[gpio_id] |= (LJCA_GPIO_CONF_LEVEL | LJCA_GPIO_CONF_PULLDOWN);
+		ljca_gpio->connect_mode[gpio_id] |=
+			(LJCA_GPIO_CONF_LEVEL | LJCA_GPIO_CONF_PULLDOWN);
 		break;
 	case IRQ_TYPE_EDGE_BOTH:
 		break;
 	case IRQ_TYPE_EDGE_RISING:
-		ljca_gpio->connect_mode[gpio_id] |= (LJCA_GPIO_CONF_EDGE | LJCA_GPIO_CONF_PULLUP);
+		ljca_gpio->connect_mode[gpio_id] |=
+			(LJCA_GPIO_CONF_EDGE | LJCA_GPIO_CONF_PULLUP);
 		break;
 	case IRQ_TYPE_EDGE_FALLING:
-		ljca_gpio->connect_mode[gpio_id] |= (LJCA_GPIO_CONF_EDGE | LJCA_GPIO_CONF_PULLDOWN);
+		ljca_gpio->connect_mode[gpio_id] |=
+			(LJCA_GPIO_CONF_EDGE | LJCA_GPIO_CONF_PULLDOWN);
 		break;
 	default:
 		return -EINVAL;
@ -332,15 +369,14 @@ static void ljca_irq_bus_unlock(struct irq_data *irqd)
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(irqd);
 	struct ljca_gpio_dev *ljca_gpio = gpiochip_get_data(gc);
 	int gpio_id = irqd_to_hwirq(irqd);
-	int enabled;
-	int unmasked;
+	int enabled, unmasked;

 	enabled = test_bit(gpio_id, ljca_gpio->enabled_irqs);
 	unmasked = test_bit(gpio_id, ljca_gpio->unmasked_irqs);

 	if (enabled != unmasked) {
 		if (unmasked) {
-			gpio_config(ljca_gpio, gpio_id, 0);
+			ljca_gpio_config(ljca_gpio, gpio_id, 0);
 			ljca_enable_irq(ljca_gpio, gpio_id, true);
 			set_bit(gpio_id, ljca_gpio->enabled_irqs);
 		} else {
@ -363,43 +399,48 @@ static const struct irq_chip ljca_gpio_irqchip = {
 	GPIOCHIP_IRQ_RESOURCE_HELPERS,
 };

-static int ljca_gpio_probe(struct platform_device *pdev)
+static int ljca_gpio_probe(struct auxiliary_device *auxdev,
+			   const struct auxiliary_device_id *aux_dev_id)
 {
+	struct ljca_client *ljca = auxiliary_dev_to_ljca_client(auxdev);
 	struct ljca_gpio_dev *ljca_gpio;
 	struct gpio_irq_chip *girq;
 	int ret;

-	ljca_gpio = devm_kzalloc(&pdev->dev, sizeof(*ljca_gpio), GFP_KERNEL);
+	ljca_gpio = devm_kzalloc(&auxdev->dev, sizeof(*ljca_gpio), GFP_KERNEL);
 	if (!ljca_gpio)
 		return -ENOMEM;

-	ljca_gpio->gpio_info = dev_get_platdata(&pdev->dev);
-	ljca_gpio->connect_mode = devm_kcalloc(&pdev->dev, ljca_gpio->gpio_info->num,
-					       sizeof(*ljca_gpio->connect_mode), GFP_KERNEL);
+	ljca_gpio->ljca = ljca;
+	ljca_gpio->gpio_info = dev_get_platdata(&auxdev->dev);
+	ljca_gpio->connect_mode = devm_kcalloc(&auxdev->dev,
+					       ljca_gpio->gpio_info->num,
+					       sizeof(*ljca_gpio->connect_mode),
+					       GFP_KERNEL);
 	if (!ljca_gpio->connect_mode)
 		return -ENOMEM;

 	mutex_init(&ljca_gpio->irq_lock);
 	mutex_init(&ljca_gpio->trans_lock);
-	ljca_gpio->pdev = pdev;
 	ljca_gpio->gc.direction_input = ljca_gpio_direction_input;
 	ljca_gpio->gc.direction_output = ljca_gpio_direction_output;
+	ljca_gpio->gc.get_direction = ljca_gpio_get_direction;
 	ljca_gpio->gc.get = ljca_gpio_get_value;
 	ljca_gpio->gc.set = ljca_gpio_set_value;
 	ljca_gpio->gc.set_config = ljca_gpio_set_config;
 	ljca_gpio->gc.init_valid_mask = ljca_gpio_init_valid_mask;
 	ljca_gpio->gc.can_sleep = true;
-	ljca_gpio->gc.parent = &pdev->dev;
+	ljca_gpio->gc.parent = &auxdev->dev;

 	ljca_gpio->gc.base = -1;
 	ljca_gpio->gc.ngpio = ljca_gpio->gpio_info->num;
-	ljca_gpio->gc.label = ACPI_COMPANION(&pdev->dev) ?
-			      acpi_dev_name(ACPI_COMPANION(&pdev->dev)) :
-			      dev_name(&pdev->dev);
+	ljca_gpio->gc.label = ACPI_COMPANION(&auxdev->dev) ?
+			      acpi_dev_name(ACPI_COMPANION(&auxdev->dev)) :
+			      dev_name(&auxdev->dev);
 	ljca_gpio->gc.owner = THIS_MODULE;

-	platform_set_drvdata(pdev, ljca_gpio);
-	ljca_register_event_cb(ljca_gpio->gpio_info->ljca, ljca_gpio_event_cb, ljca_gpio);
+	auxiliary_set_drvdata(auxdev, ljca_gpio);
+	ljca_register_event_cb(ljca, ljca_gpio_event_cb, ljca_gpio);

 	girq = &ljca_gpio->gc.irq;
 	gpio_irq_chip_set_chip(girq, &ljca_gpio_irqchip);
@ -413,7 +454,7 @@ static int ljca_gpio_probe(struct platform_device *pdev)
 	INIT_WORK(&ljca_gpio->work, ljca_gpio_async);
 	ret = gpiochip_add_data(&ljca_gpio->gc, ljca_gpio);
 	if (ret) {
-		ljca_unregister_event_cb(ljca_gpio->gpio_info->ljca);
+		ljca_unregister_event_cb(ljca);
 		mutex_destroy(&ljca_gpio->irq_lock);
 		mutex_destroy(&ljca_gpio->trans_lock);
 	}
@ -421,33 +462,33 @@ static int ljca_gpio_probe(struct platform_device *pdev)
 	return ret;
 }

-static void ljca_gpio_remove(struct platform_device *pdev)
+static void ljca_gpio_remove(struct auxiliary_device *auxdev)
 {
-	struct ljca_gpio_dev *ljca_gpio = platform_get_drvdata(pdev);
+	struct ljca_gpio_dev *ljca_gpio = auxiliary_get_drvdata(auxdev);

 	gpiochip_remove(&ljca_gpio->gc);
-	ljca_unregister_event_cb(ljca_gpio->gpio_info->ljca);
+	ljca_unregister_event_cb(ljca_gpio->ljca);
+	cancel_work_sync(&ljca_gpio->work);
 	mutex_destroy(&ljca_gpio->irq_lock);
 	mutex_destroy(&ljca_gpio->trans_lock);
 }

-#define LJCA_GPIO_DRV_NAME "ljca-gpio"
-static const struct platform_device_id ljca_gpio_id[] = {
-	{ LJCA_GPIO_DRV_NAME, 0 },
-	{ /* sentinel */ }
+static const struct auxiliary_device_id ljca_gpio_id_table[] = {
+	{ "usb_ljca.ljca-gpio", 0 },
+	{ /* sentinel */ },
 };
-MODULE_DEVICE_TABLE(platform, ljca_gpio_id);
+MODULE_DEVICE_TABLE(auxiliary, ljca_gpio_id_table);

-static struct platform_driver ljca_gpio_driver = {
-	.driver.name = LJCA_GPIO_DRV_NAME,
+static struct auxiliary_driver ljca_gpio_driver = {
 	.probe = ljca_gpio_probe,
-	.remove_new = ljca_gpio_remove,
+	.remove = ljca_gpio_remove,
+	.id_table = ljca_gpio_id_table,
 };
-module_platform_driver(ljca_gpio_driver);
+module_auxiliary_driver(ljca_gpio_driver);

-MODULE_AUTHOR("Ye Xiang <xiang.ye@intel.com>");
-MODULE_AUTHOR("Wang Zhifeng <zhifeng.wang@intel.com>");
-MODULE_AUTHOR("Zhang Lixu <lixu.zhang@intel.com>");
+MODULE_AUTHOR("Wentong Wu <wentong.wu@intel.com>");
+MODULE_AUTHOR("Zhifeng Wang <zhifeng.wang@intel.com>");
+MODULE_AUTHOR("Lixu Zhang <lixu.zhang@intel.com>");
 MODULE_DESCRIPTION("Intel La Jolla Cove Adapter USB-GPIO driver");
 MODULE_LICENSE("GPL");
 MODULE_IMPORT_NS(LJCA);
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@ -1264,6 +1264,17 @@ config I2C_DLN2
 	 This driver can also be built as a module.  If so, the module
 	 will be called i2c-dln2.

+config I2C_LJCA
+	tristate "I2C functionality of Intel La Jolla Cove Adapter"
+	depends on USB_LJCA
+	default USB_LJCA
+	help
+	  If you say yes to this option, I2C functionality support of Intel
+	  La Jolla Cove Adapter (LJCA) will be included.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called i2c-ljca.
+
 config I2C_CP2615
 	tristate "Silicon Labs CP2615 USB sound card and I2C adapter"
 	depends on USB
--- a/drivers/i2c/busses/Makefile
+++ b/drivers/i2c/busses/Makefile
@ -133,6 +133,7 @@ obj-$(CONFIG_I2C_GXP)		+= i2c-gxp.o
 # External I2C/SMBus adapter drivers
 obj-$(CONFIG_I2C_DIOLAN_U2C)	+= i2c-diolan-u2c.o
 obj-$(CONFIG_I2C_DLN2)		+= i2c-dln2.o
+obj-$(CONFIG_I2C_LJCA)		+= i2c-ljca.o
 obj-$(CONFIG_I2C_CP2615) += i2c-cp2615.o
 obj-$(CONFIG_I2C_PARPORT)	+= i2c-parport.o
 obj-$(CONFIG_I2C_PCI1XXXX)	+= i2c-mchp-pci1xxxx.o
--- a/drivers/i2c/busses/i2c-ljca.c
+++ b/drivers/i2c/busses/i2c-ljca.c
@ -0,0 +1,343 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Intel La Jolla Cove Adapter USB-I2C driver
+ *
+ * Copyright (c) 2023, Intel Corporation.
+ */
+
+#include <linux/acpi.h>
+#include <linux/auxiliary_bus.h>
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/dev_printk.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/usb/ljca.h>
+
+/* I2C init flags */
+#define LJCA_I2C_INIT_FLAG_MODE			BIT(0)
+#define LJCA_I2C_INIT_FLAG_MODE_POLLING		FIELD_PREP(LJCA_I2C_INIT_FLAG_MODE, 0)
+#define LJCA_I2C_INIT_FLAG_MODE_INTERRUPT	FIELD_PREP(LJCA_I2C_INIT_FLAG_MODE, 1)
+
+#define LJCA_I2C_INIT_FLAG_ADDR_16BIT		BIT(0)
+
+#define LJCA_I2C_INIT_FLAG_FREQ			GENMASK(2, 1)
+#define LJCA_I2C_INIT_FLAG_FREQ_100K		FIELD_PREP(LJCA_I2C_INIT_FLAG_FREQ, 0)
+#define LJCA_I2C_INIT_FLAG_FREQ_400K		FIELD_PREP(LJCA_I2C_INIT_FLAG_FREQ, 1)
+#define LJCA_I2C_INIT_FLAG_FREQ_1M		FIELD_PREP(LJCA_I2C_INIT_FLAG_FREQ, 2)
+
+#define LJCA_I2C_BUF_SIZE			60u
+#define LJCA_I2C_MAX_XFER_SIZE			(LJCA_I2C_BUF_SIZE - sizeof(struct ljca_i2c_rw_packet))
+
+/* I2C commands */
+enum ljca_i2c_cmd {
+	LJCA_I2C_INIT = 1,
+	LJCA_I2C_XFER,
+	LJCA_I2C_START,
+	LJCA_I2C_STOP,
+	LJCA_I2C_READ,
+	LJCA_I2C_WRITE,
+};
+
+enum ljca_xfer_type {
+	LJCA_I2C_WRITE_XFER_TYPE,
+	LJCA_I2C_READ_XFER_TYPE,
+};
+
+/* I2C raw commands: Init/Start/Read/Write/Stop */
+struct ljca_i2c_rw_packet {
+	u8 id;
+	__le16 len;
+	u8 data[] __counted_by(len);
+} __packed;
+
+struct ljca_i2c_dev {
+	struct ljca_client *ljca;
+	struct ljca_i2c_info *i2c_info;
+	struct i2c_adapter adap;
+
+	u8 obuf[LJCA_I2C_BUF_SIZE];
+	u8 ibuf[LJCA_I2C_BUF_SIZE];
+};
+
+static int ljca_i2c_init(struct ljca_i2c_dev *ljca_i2c, u8 id)
+{
+	struct ljca_i2c_rw_packet *w_packet =
+			(struct ljca_i2c_rw_packet *)ljca_i2c->obuf;
+	int ret;
+
+	w_packet->id = id;
+	w_packet->len = cpu_to_le16(sizeof(*w_packet->data));
+	w_packet->data[0] = LJCA_I2C_INIT_FLAG_FREQ_400K;
+
+	ret = ljca_transfer(ljca_i2c->ljca, LJCA_I2C_INIT, (u8 *)w_packet,
+			    struct_size(w_packet, data, 1), NULL, 0);
+
+	return ret < 0 ? ret : 0;
+}
+
+static int ljca_i2c_start(struct ljca_i2c_dev *ljca_i2c, u8 slave_addr,
+			  enum ljca_xfer_type type)
+{
+	struct ljca_i2c_rw_packet *w_packet =
+			(struct ljca_i2c_rw_packet *)ljca_i2c->obuf;
+	struct ljca_i2c_rw_packet *r_packet =
+			(struct ljca_i2c_rw_packet *)ljca_i2c->ibuf;
+	s16 rp_len;
+	int ret;
+
+	w_packet->id = ljca_i2c->i2c_info->id;
+	w_packet->len = cpu_to_le16(sizeof(*w_packet->data));
+	w_packet->data[0] = (slave_addr << 1) | type;
+
+	ret = ljca_transfer(ljca_i2c->ljca, LJCA_I2C_START, (u8 *)w_packet,
+			    struct_size(w_packet, data, 1), (u8 *)r_packet,
+			    LJCA_I2C_BUF_SIZE);
+	if (ret < 0 || ret < sizeof(*r_packet))
+		return ret < 0 ? ret : -EIO;
+
+	rp_len = le16_to_cpu(r_packet->len);
+	if (rp_len < 0 || r_packet->id != w_packet->id) {
+		dev_dbg(&ljca_i2c->adap.dev,
+			"i2c start failed len: %d id: %d %d\n",
+			rp_len, r_packet->id, w_packet->id);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static void ljca_i2c_stop(struct ljca_i2c_dev *ljca_i2c, u8 slave_addr)
+{
+	struct ljca_i2c_rw_packet *w_packet =
+			(struct ljca_i2c_rw_packet *)ljca_i2c->obuf;
+	struct ljca_i2c_rw_packet *r_packet =
+			(struct ljca_i2c_rw_packet *)ljca_i2c->ibuf;
+	s16 rp_len;
+	int ret;
+
+	w_packet->id = ljca_i2c->i2c_info->id;
+	w_packet->len = cpu_to_le16(sizeof(*w_packet->data));
+	w_packet->data[0] = 0;
+
+	ret = ljca_transfer(ljca_i2c->ljca, LJCA_I2C_STOP, (u8 *)w_packet,
+			    struct_size(w_packet, data, 1), (u8 *)r_packet,
+			    LJCA_I2C_BUF_SIZE);
+	if (ret < 0 || ret < sizeof(*r_packet)) {
+		dev_dbg(&ljca_i2c->adap.dev,
+			"i2c stop failed ret: %d id: %d\n",
+			ret, w_packet->id);
+		return;
+	}
+
+	rp_len = le16_to_cpu(r_packet->len);
+	if (rp_len < 0 || r_packet->id != w_packet->id)
+		dev_dbg(&ljca_i2c->adap.dev,
+			"i2c stop failed len: %d id: %d %d\n",
+			rp_len, r_packet->id, w_packet->id);
+}
+
+static int ljca_i2c_pure_read(struct ljca_i2c_dev *ljca_i2c, u8 *data, u8 len)
+{
+	struct ljca_i2c_rw_packet *w_packet =
+			(struct ljca_i2c_rw_packet *)ljca_i2c->obuf;
+	struct ljca_i2c_rw_packet *r_packet =
+			(struct ljca_i2c_rw_packet *)ljca_i2c->ibuf;
+	s16 rp_len;
+	int ret;
+
+	w_packet->id = ljca_i2c->i2c_info->id;
+	w_packet->len = cpu_to_le16(len);
+	w_packet->data[0] = 0;
+
+	ret = ljca_transfer(ljca_i2c->ljca, LJCA_I2C_READ, (u8 *)w_packet,
+			    struct_size(w_packet, data, 1), (u8 *)r_packet,
+			    LJCA_I2C_BUF_SIZE);
+	if (ret < 0 || ret < sizeof(*r_packet))
+		return ret < 0 ? ret : -EIO;
+
+	rp_len = le16_to_cpu(r_packet->len);
+	if (rp_len != len || r_packet->id != w_packet->id) {
+		dev_dbg(&ljca_i2c->adap.dev,
+			"i2c raw read failed len: %d id: %d %d\n",
+			rp_len, r_packet->id, w_packet->id);
+		return -EIO;
+	}
+
+	memcpy(data, r_packet->data, len);
+
+	return 0;
+}
+
+static int ljca_i2c_read(struct ljca_i2c_dev *ljca_i2c, u8 slave_addr, u8 *data,
+			 u8 len)
+{
+	int ret;
+
+	ret = ljca_i2c_start(ljca_i2c, slave_addr, LJCA_I2C_READ_XFER_TYPE);
+	if (!ret)
+		ret = ljca_i2c_pure_read(ljca_i2c, data, len);
+
+	ljca_i2c_stop(ljca_i2c, slave_addr);
+
+	return ret;
+}
+
+static int ljca_i2c_pure_write(struct ljca_i2c_dev *ljca_i2c, u8 *data, u8 len)
+{
+	struct ljca_i2c_rw_packet *w_packet =
+			(struct ljca_i2c_rw_packet *)ljca_i2c->obuf;
+	struct ljca_i2c_rw_packet *r_packet =
+			(struct ljca_i2c_rw_packet *)ljca_i2c->ibuf;
+	s16 rplen;
+	int ret;
+
+	w_packet->id = ljca_i2c->i2c_info->id;
+	w_packet->len = cpu_to_le16(len);
+	memcpy(w_packet->data, data, len);
+
+	ret = ljca_transfer(ljca_i2c->ljca, LJCA_I2C_WRITE, (u8 *)w_packet,
+			    struct_size(w_packet, data, len), (u8 *)r_packet,
+			    LJCA_I2C_BUF_SIZE);
+	if (ret < 0 || ret < sizeof(*r_packet))
+		return ret < 0 ? ret : -EIO;
+
+	rplen = le16_to_cpu(r_packet->len);
+	if (rplen != len || r_packet->id != w_packet->id) {
+		dev_dbg(&ljca_i2c->adap.dev,
+			"i2c write failed len: %d id: %d/%d\n",
+			rplen, r_packet->id, w_packet->id);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static int ljca_i2c_write(struct ljca_i2c_dev *ljca_i2c, u8 slave_addr,
+			  u8 *data, u8 len)
+{
+	int ret;
+
+	ret = ljca_i2c_start(ljca_i2c, slave_addr, LJCA_I2C_WRITE_XFER_TYPE);
+	if (!ret)
+		ret = ljca_i2c_pure_write(ljca_i2c, data, len);
+
+	ljca_i2c_stop(ljca_i2c, slave_addr);
+
+	return ret;
+}
+
+static int ljca_i2c_xfer(struct i2c_adapter *adapter, struct i2c_msg *msg,
+			 int num)
+{
+	struct ljca_i2c_dev *ljca_i2c;
+	struct i2c_msg *cur_msg;
+	int i, ret;
+
+	ljca_i2c = i2c_get_adapdata(adapter);
+	if (!ljca_i2c)
+		return -EINVAL;
+
+	for (i = 0; i < num; i++) {
+		cur_msg = &msg[i];
+		if (cur_msg->flags & I2C_M_RD)
+			ret = ljca_i2c_read(ljca_i2c, cur_msg->addr,
+					    cur_msg->buf, cur_msg->len);
+		else
+			ret = ljca_i2c_write(ljca_i2c, cur_msg->addr,
+					     cur_msg->buf, cur_msg->len);
+
+		if (ret)
+			return ret;
+	}
+
+	return num;
+}
+
+static u32 ljca_i2c_func(struct i2c_adapter *adap)
+{
+	return I2C_FUNC_I2C | (I2C_FUNC_SMBUS_EMUL & ~I2C_FUNC_SMBUS_QUICK);
+}
+
+static const struct i2c_adapter_quirks ljca_i2c_quirks = {
+	.flags = I2C_AQ_NO_ZERO_LEN,
+	.max_read_len = LJCA_I2C_MAX_XFER_SIZE,
+	.max_write_len = LJCA_I2C_MAX_XFER_SIZE,
+};
+
+static const struct i2c_algorithm ljca_i2c_algo = {
+	.master_xfer = ljca_i2c_xfer,
+	.functionality = ljca_i2c_func,
+};
+
+static int ljca_i2c_probe(struct auxiliary_device *auxdev,
+			  const struct auxiliary_device_id *aux_dev_id)
+{
+	struct ljca_client *ljca = auxiliary_dev_to_ljca_client(auxdev);
+	struct ljca_i2c_dev *ljca_i2c;
+	int ret;
+
+	ljca_i2c = devm_kzalloc(&auxdev->dev, sizeof(*ljca_i2c), GFP_KERNEL);
+	if (!ljca_i2c)
+		return -ENOMEM;
+
+	ljca_i2c->ljca = ljca;
+	ljca_i2c->i2c_info = dev_get_platdata(&auxdev->dev);
+
+	ljca_i2c->adap.owner = THIS_MODULE;
+	ljca_i2c->adap.class = I2C_CLASS_HWMON;
+	ljca_i2c->adap.algo = &ljca_i2c_algo;
+	ljca_i2c->adap.quirks = &ljca_i2c_quirks;
+	ljca_i2c->adap.dev.parent = &auxdev->dev;
+
+	snprintf(ljca_i2c->adap.name, sizeof(ljca_i2c->adap.name), "%s-%s-%d",
+		 dev_name(&auxdev->dev), dev_name(auxdev->dev.parent),
+		 ljca_i2c->i2c_info->id);
+
+	device_set_node(&ljca_i2c->adap.dev, dev_fwnode(&auxdev->dev));
+
+	i2c_set_adapdata(&ljca_i2c->adap, ljca_i2c);
+	auxiliary_set_drvdata(auxdev, ljca_i2c);
+
+	ret = ljca_i2c_init(ljca_i2c, ljca_i2c->i2c_info->id);
+	if (ret)
+		return dev_err_probe(&auxdev->dev, -EIO,
+				     "i2c init failed id: %d\n",
+				     ljca_i2c->i2c_info->id);
+
+	ret = devm_i2c_add_adapter(&auxdev->dev, &ljca_i2c->adap);
+	if (ret)
+		return ret;
+
+	if (has_acpi_companion(&ljca_i2c->adap.dev))
+		acpi_dev_clear_dependencies(ACPI_COMPANION(&ljca_i2c->adap.dev));
+
+	return 0;
+}
+
+static void ljca_i2c_remove(struct auxiliary_device *auxdev)
+{
+	struct ljca_i2c_dev *ljca_i2c = auxiliary_get_drvdata(auxdev);
+
+	i2c_del_adapter(&ljca_i2c->adap);
+}
+
+static const struct auxiliary_device_id ljca_i2c_id_table[] = {
+	{ "usb_ljca.ljca-i2c", 0 },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(auxiliary, ljca_i2c_id_table);
+
+static struct auxiliary_driver ljca_i2c_driver = {
+	.probe = ljca_i2c_probe,
+	.remove = ljca_i2c_remove,
+	.id_table = ljca_i2c_id_table,
+};
+module_auxiliary_driver(ljca_i2c_driver);
+
+MODULE_AUTHOR("Wentong Wu <wentong.wu@intel.com>");
+MODULE_AUTHOR("Zhifeng Wang <zhifeng.wang@intel.com>");
+MODULE_AUTHOR("Lixu Zhang <lixu.zhang@intel.com>");
+MODULE_DESCRIPTION("Intel La Jolla Cove Adapter USB-I2C driver");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(LJCA);
--- a/drivers/platform/chrome/cros_ec_typec.c
+++ b/drivers/platform/chrome/cros_ec_typec.c
@ -492,6 +492,8 @@ static int cros_typec_enable_dp(struct cros_typec_data *typec,
 {
 	struct cros_typec_port *port = typec->ports[port_num];
 	struct typec_displayport_data dp_data;
+	u32 cable_tbt_vdo;
+	u32 cable_dp_vdo;
 	int ret;

 	if (typec->pd_ctrl_ver < 2) {
@ -524,6 +526,32 @@ static int cros_typec_enable_dp(struct cros_typec_data *typec,
 	port->state.data = &dp_data;
 	port->state.mode = TYPEC_MODAL_STATE(ffs(pd_ctrl->dp_mode));

+	/* Get cable VDO for cables with DPSID to check DPAM2.1 is supported */
+	cable_dp_vdo = cros_typec_get_cable_vdo(port, USB_TYPEC_DP_SID);
+
+	/**
+	 * Get cable VDO for thunderbolt cables and cables with DPSID but does not
+	 * support DPAM2.1.
+	 */
+	cable_tbt_vdo = cros_typec_get_cable_vdo(port, USB_TYPEC_TBT_SID);
+
+	if (cable_dp_vdo & DP_CAP_DPAM_VERSION) {
+		dp_data.conf |= cable_dp_vdo;
+	} else if (cable_tbt_vdo) {
+		dp_data.conf |=  TBT_CABLE_SPEED(cable_tbt_vdo) << DP_CONF_SIGNALLING_SHIFT;
+
+		/* Cable Type */
+		if (cable_tbt_vdo & TBT_CABLE_OPTICAL)
+			dp_data.conf |= DP_CONF_CABLE_TYPE_OPTICAL << DP_CONF_CABLE_TYPE_SHIFT;
+		else if (cable_tbt_vdo & TBT_CABLE_RETIMER)
+			dp_data.conf |= DP_CONF_CABLE_TYPE_RE_TIMER << DP_CONF_CABLE_TYPE_SHIFT;
+		else if (cable_tbt_vdo & TBT_CABLE_ACTIVE_PASSIVE)
+			dp_data.conf |= DP_CONF_CABLE_TYPE_RE_DRIVER << DP_CONF_CABLE_TYPE_SHIFT;
+	} else if (PD_IDH_PTYPE(port->c_identity.id_header) == IDH_PTYPE_PCABLE) {
+		dp_data.conf |= VDO_TYPEC_CABLE_SPEED(port->c_identity.vdo[0]) <<
+				DP_CONF_SIGNALLING_SHIFT;
+	}
+
 	ret = cros_typec_retimer_set(port->retimer, port->state);
 	if (!ret)
 		ret = typec_mux_set(port->mux, &port->state);
--- a/drivers/power/supply/tps65217_charger.c
+++ b/drivers/power/supply/tps65217_charger.c
@ -237,7 +237,7 @@ static int tps65217_charger_probe(struct platform_device *pdev)
 	for (i = 0; i < NUM_CHARGER_IRQS; i++) {
 		ret = devm_request_threaded_irq(&pdev->dev, irq[i], NULL,
 						tps65217_charger_irq,
-						IRQF_ONESHOT, "tps65217-charger",
+						IRQF_SHARED, "tps65217-charger",
 						charger);
 		if (ret) {
 			dev_err(charger->dev,
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@ -616,6 +616,17 @@ config SPI_FSL_ESPI
 	  From MPC8536, 85xx platform uses the controller, and all P10xx,
 	  P20xx, P30xx,P40xx, P50xx uses this controller.

+config SPI_LJCA
+	tristate "Intel La Jolla Cove Adapter SPI support"
+	depends on USB_LJCA
+	default USB_LJCA
+	help
+	  Select this option to enable SPI driver for the Intel
+	  La Jolla Cove Adapter (LJCA) board.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called spi-ljca.
+
 config SPI_MESON_SPICC
 	tristate "Amlogic Meson SPICC controller"
 	depends on COMMON_CLK
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@ -71,6 +71,7 @@ obj-$(CONFIG_SPI_INTEL_PCI)		+= spi-intel-pci.o
 obj-$(CONFIG_SPI_INTEL_PLATFORM)	+= spi-intel-platform.o
 obj-$(CONFIG_SPI_LANTIQ_SSC)		+= spi-lantiq-ssc.o
 obj-$(CONFIG_SPI_JCORE)			+= spi-jcore.o
+obj-$(CONFIG_SPI_LJCA)			+= spi-ljca.o
 obj-$(CONFIG_SPI_LM70_LLP)		+= spi-lm70llp.o
 obj-$(CONFIG_SPI_LOONGSON_CORE)		+= spi-loongson-core.o
 obj-$(CONFIG_SPI_LOONGSON_PCI)		+= spi-loongson-pci.o
--- a/drivers/spi/spi-ljca.c
+++ b/drivers/spi/spi-ljca.c
@ -0,0 +1,297 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Intel La Jolla Cove Adapter USB-SPI driver
+ *
+ * Copyright (c) 2023, Intel Corporation.
+ */
+
+#include <linux/auxiliary_bus.h>
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/dev_printk.h>
+#include <linux/module.h>
+#include <linux/spi/spi.h>
+#include <linux/usb/ljca.h>
+
+#define LJCA_SPI_BUS_MAX_HZ		48000000
+
+#define LJCA_SPI_BUF_SIZE		60u
+#define LJCA_SPI_MAX_XFER_SIZE		\
+	(LJCA_SPI_BUF_SIZE - sizeof(struct ljca_spi_xfer_packet))
+
+#define LJCA_SPI_CLK_MODE_POLARITY	BIT(0)
+#define LJCA_SPI_CLK_MODE_PHASE		BIT(1)
+
+#define LJCA_SPI_XFER_INDICATOR_ID	GENMASK(5, 0)
+#define LJCA_SPI_XFER_INDICATOR_CMPL	BIT(6)
+#define LJCA_SPI_XFER_INDICATOR_INDEX	BIT(7)
+
+/* SPI commands */
+enum ljca_spi_cmd {
+	LJCA_SPI_INIT = 1,
+	LJCA_SPI_READ,
+	LJCA_SPI_WRITE,
+	LJCA_SPI_WRITEREAD,
+	LJCA_SPI_DEINIT,
+};
+
+enum {
+	LJCA_SPI_BUS_SPEED_24M,
+	LJCA_SPI_BUS_SPEED_12M,
+	LJCA_SPI_BUS_SPEED_8M,
+	LJCA_SPI_BUS_SPEED_6M,
+	LJCA_SPI_BUS_SPEED_4_8M, /*4.8MHz*/
+	LJCA_SPI_BUS_SPEED_MIN = LJCA_SPI_BUS_SPEED_4_8M,
+};
+
+enum {
+	LJCA_SPI_CLOCK_LOW_POLARITY,
+	LJCA_SPI_CLOCK_HIGH_POLARITY,
+};
+
+enum {
+	LJCA_SPI_CLOCK_FIRST_PHASE,
+	LJCA_SPI_CLOCK_SECOND_PHASE,
+};
+
+struct ljca_spi_init_packet {
+	u8 index;
+	u8 speed;
+	u8 mode;
+} __packed;
+
+struct ljca_spi_xfer_packet {
+	u8 indicator;
+	u8 len;
+	u8 data[] __counted_by(len);
+} __packed;
+
+struct ljca_spi_dev {
+	struct ljca_client *ljca;
+	struct spi_controller *controller;
+	struct ljca_spi_info *spi_info;
+	u8 speed;
+	u8 mode;
+
+	u8 obuf[LJCA_SPI_BUF_SIZE];
+	u8 ibuf[LJCA_SPI_BUF_SIZE];
+};
+
+static int ljca_spi_read_write(struct ljca_spi_dev *ljca_spi, const u8 *w_data,
+			       u8 *r_data, int len, int id, int complete,
+			       int cmd)
+{
+	struct ljca_spi_xfer_packet *w_packet =
+			(struct ljca_spi_xfer_packet *)ljca_spi->obuf;
+	struct ljca_spi_xfer_packet *r_packet =
+			(struct ljca_spi_xfer_packet *)ljca_spi->ibuf;
+	int ret;
+
+	w_packet->indicator = FIELD_PREP(LJCA_SPI_XFER_INDICATOR_ID, id) |
+			      FIELD_PREP(LJCA_SPI_XFER_INDICATOR_CMPL, complete) |
+			      FIELD_PREP(LJCA_SPI_XFER_INDICATOR_INDEX,
+					 ljca_spi->spi_info->id);
+
+	if (cmd == LJCA_SPI_READ) {
+		w_packet->len = sizeof(u16);
+		*(__le16 *)&w_packet->data[0] = cpu_to_le16(len);
+	} else {
+		w_packet->len = len;
+		memcpy(w_packet->data, w_data, len);
+	}
+
+	ret = ljca_transfer(ljca_spi->ljca, cmd, (u8 *)w_packet,
+			    struct_size(w_packet, data, w_packet->len),
+			    (u8 *)r_packet, LJCA_SPI_BUF_SIZE);
+	if (ret < 0)
+		return ret;
+	else if (ret < sizeof(*r_packet) || r_packet->len <= 0)
+		return -EIO;
+
+	if (r_data)
+		memcpy(r_data, r_packet->data, r_packet->len);
+
+	return 0;
+}
+
+static int ljca_spi_init(struct ljca_spi_dev *ljca_spi, u8 div, u8 mode)
+{
+	struct ljca_spi_init_packet w_packet = {};
+	int ret;
+
+	if (ljca_spi->mode == mode && ljca_spi->speed == div)
+		return 0;
+
+	w_packet.index = ljca_spi->spi_info->id;
+	w_packet.speed = div;
+	w_packet.mode = FIELD_PREP(LJCA_SPI_CLK_MODE_POLARITY,
+				   (mode & SPI_CPOL) ? LJCA_SPI_CLOCK_HIGH_POLARITY :
+						       LJCA_SPI_CLOCK_LOW_POLARITY) |
+			FIELD_PREP(LJCA_SPI_CLK_MODE_PHASE,
+				   (mode & SPI_CPHA) ? LJCA_SPI_CLOCK_SECOND_PHASE :
+						       LJCA_SPI_CLOCK_FIRST_PHASE);
+
+	ret = ljca_transfer(ljca_spi->ljca, LJCA_SPI_INIT, (u8 *)&w_packet,
+			    sizeof(w_packet), NULL, 0);
+	if (ret < 0)
+		return ret;
+
+	ljca_spi->mode = mode;
+	ljca_spi->speed = div;
+
+	return 0;
+}
+
+static int ljca_spi_deinit(struct ljca_spi_dev *ljca_spi)
+{
+	struct ljca_spi_init_packet w_packet = {};
+	int ret;
+
+	w_packet.index = ljca_spi->spi_info->id;
+
+	ret = ljca_transfer(ljca_spi->ljca, LJCA_SPI_DEINIT, (u8 *)&w_packet,
+			    sizeof(w_packet), NULL, 0);
+
+	return ret < 0 ? ret : 0;
+}
+
+static inline int ljca_spi_transfer(struct ljca_spi_dev *ljca_spi,
+				    const u8 *tx_data, u8 *rx_data, u16 len)
+{
+	int complete, cur_len;
+	int remaining = len;
+	int cmd, ret, i;
+	int offset = 0;
+
+	if (tx_data && rx_data)
+		cmd = LJCA_SPI_WRITEREAD;
+	else if (tx_data)
+		cmd = LJCA_SPI_WRITE;
+	else if (rx_data)
+		cmd = LJCA_SPI_READ;
+	else
+		return -EINVAL;
+
+	for (i = 0; remaining > 0; i++) {
+		cur_len = min_t(unsigned int, remaining, LJCA_SPI_MAX_XFER_SIZE);
+		complete = (cur_len == remaining);
+
+		ret = ljca_spi_read_write(ljca_spi,
+					  tx_data ? tx_data + offset : NULL,
+					  rx_data ? rx_data + offset : NULL,
+					  cur_len, i, complete, cmd);
+		if (ret)
+			return ret;
+
+		offset += cur_len;
+		remaining -= cur_len;
+	}
+
+	return 0;
+}
+
+static int ljca_spi_transfer_one(struct spi_controller *controller,
+				 struct spi_device *spi,
+				 struct spi_transfer *xfer)
+{
+	u8 div = DIV_ROUND_UP(controller->max_speed_hz, xfer->speed_hz) / 2 - 1;
+	struct ljca_spi_dev *ljca_spi = spi_controller_get_devdata(controller);
+	int ret;
+
+	div = min_t(u8, LJCA_SPI_BUS_SPEED_MIN, div);
+
+	ret = ljca_spi_init(ljca_spi, div, spi->mode);
+	if (ret) {
+		dev_err(&ljca_spi->ljca->auxdev.dev,
+			"cannot initialize transfer ret %d\n", ret);
+		return ret;
+	}
+
+	ret = ljca_spi_transfer(ljca_spi, xfer->tx_buf, xfer->rx_buf, xfer->len);
+	if (ret)
+		dev_err(&ljca_spi->ljca->auxdev.dev,
+			"transfer failed len: %d\n", xfer->len);
+
+	return ret;
+}
+
+static int ljca_spi_probe(struct auxiliary_device *auxdev,
+			  const struct auxiliary_device_id *aux_dev_id)
+{
+	struct ljca_client *ljca = auxiliary_dev_to_ljca_client(auxdev);
+	struct spi_controller *controller;
+	struct ljca_spi_dev *ljca_spi;
+	int ret;
+
+	controller = devm_spi_alloc_master(&auxdev->dev, sizeof(*ljca_spi));
+	if (!controller)
+		return -ENOMEM;
+
+	ljca_spi = spi_controller_get_devdata(controller);
+	ljca_spi->ljca = ljca;
+	ljca_spi->spi_info = dev_get_platdata(&auxdev->dev);
+	ljca_spi->controller = controller;
+
+	controller->bus_num = -1;
+	controller->mode_bits = SPI_CPHA | SPI_CPOL;
+	controller->transfer_one = ljca_spi_transfer_one;
+	controller->auto_runtime_pm = false;
+	controller->max_speed_hz = LJCA_SPI_BUS_MAX_HZ;
+
+	device_set_node(&ljca_spi->controller->dev, dev_fwnode(&auxdev->dev));
+	auxiliary_set_drvdata(auxdev, controller);
+
+	ret = spi_register_controller(controller);
+	if (ret)
+		dev_err(&auxdev->dev, "Failed to register controller\n");
+
+	return ret;
+}
+
+static void ljca_spi_dev_remove(struct auxiliary_device *auxdev)
+{
+	struct spi_controller *controller = auxiliary_get_drvdata(auxdev);
+	struct ljca_spi_dev *ljca_spi = spi_controller_get_devdata(controller);
+
+	spi_unregister_controller(controller);
+	ljca_spi_deinit(ljca_spi);
+}
+
+static int ljca_spi_dev_suspend(struct device *dev)
+{
+	struct spi_controller *controller = dev_get_drvdata(dev);
+
+	return spi_controller_suspend(controller);
+}
+
+static int ljca_spi_dev_resume(struct device *dev)
+{
+	struct spi_controller *controller = dev_get_drvdata(dev);
+
+	return spi_controller_resume(controller);
+}
+
+static const struct dev_pm_ops ljca_spi_pm = {
+	SYSTEM_SLEEP_PM_OPS(ljca_spi_dev_suspend, ljca_spi_dev_resume)
+};
+
+static const struct auxiliary_device_id ljca_spi_id_table[] = {
+	{ "usb_ljca.ljca-spi", 0 },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(auxiliary, ljca_spi_id_table);
+
+static struct auxiliary_driver ljca_spi_driver = {
+	.driver.pm	= &ljca_spi_pm,
+	.probe		= ljca_spi_probe,
+	.remove		= ljca_spi_dev_remove,
+	.id_table	= ljca_spi_id_table,
+};
+module_auxiliary_driver(ljca_spi_driver);
+
+MODULE_AUTHOR("Wentong Wu <wentong.wu@intel.com>");
+MODULE_AUTHOR("Zhifeng Wang <zhifeng.wang@intel.com>");
+MODULE_AUTHOR("Lixu Zhang <lixu.zhang@intel.com>");
+MODULE_DESCRIPTION("Intel La Jolla Cove Adapter USB-SPI driver");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(LJCA);
--- a/drivers/thunderbolt/clx.c
+++ b/drivers/thunderbolt/clx.c
@ -174,6 +174,28 @@ bool tb_port_clx_is_enabled(struct tb_port *port, unsigned int clx)
 	return !!(tb_port_clx(port) & clx);
 }

+/**
+ * tb_switch_clx_is_supported() - Is CLx supported on this type of router
+ * @sw: The router to check CLx support for
+ */
+static bool tb_switch_clx_is_supported(const struct tb_switch *sw)
+{
+	if (!clx_enabled)
+		return false;
+
+	if (sw->quirks & QUIRK_NO_CLX)
+		return false;
+
+	/*
+	 * CLx is not enabled and validated on Intel USB4 platforms
+	 * before Alder Lake.
+	 */
+	if (tb_switch_is_tiger_lake(sw))
+		return false;
+
+	return tb_switch_is_usb4(sw) || tb_switch_is_titan_ridge(sw);
+}
+
 /**
 * tb_switch_clx_init() - Initialize router CL states
 * @sw: Router
@ -273,28 +295,6 @@ static int tb_switch_mask_clx_objections(struct tb_switch *sw)
 			   sw->cap_lp + offset, ARRAY_SIZE(val));
 }

-/**
- * tb_switch_clx_is_supported() - Is CLx supported on this type of router
- * @sw: The router to check CLx support for
- */
-bool tb_switch_clx_is_supported(const struct tb_switch *sw)
-{
-	if (!clx_enabled)
-		return false;
-
-	if (sw->quirks & QUIRK_NO_CLX)
-		return false;
-
-	/*
-	 * CLx is not enabled and validated on Intel USB4 platforms
-	 * before Alder Lake.
-	 */
-	if (tb_switch_is_tiger_lake(sw))
-		return false;
-
-	return tb_switch_is_usb4(sw) || tb_switch_is_titan_ridge(sw);
-}
-
 static bool validate_mask(unsigned int clx)
 {
 	/* Previous states need to be enabled */
@ -405,6 +405,9 @@ int tb_switch_clx_disable(struct tb_switch *sw)
 	if (!clx)
 		return 0;

+	if (sw->is_unplugged)
+		return clx;
+
 	up = tb_upstream_port(sw);
 	down = tb_switch_downstream_port(sw);

--- a/drivers/thunderbolt/dma_test.c
+++ b/drivers/thunderbolt/dma_test.c
@ -101,7 +101,7 @@ struct dma_test {
 	unsigned int packets_sent;
 	unsigned int packets_received;
 	unsigned int link_speed;
-	unsigned int link_width;
+	enum tb_link_width link_width;
 	unsigned int crc_errors;
 	unsigned int buffer_overflow_errors;
 	enum dma_test_result result;
@ -465,9 +465,9 @@ DMA_TEST_DEBUGFS_ATTR(packets_to_send, packets_to_send_get,
 static int dma_test_set_bonding(struct dma_test *dt)
 {
 	switch (dt->link_width) {
-	case 2:
+	case TB_LINK_WIDTH_DUAL:
 		return tb_xdomain_lane_bonding_enable(dt->xd);
-	case 1:
+	case TB_LINK_WIDTH_SINGLE:
 		tb_xdomain_lane_bonding_disable(dt->xd);
 		fallthrough;
 	default:
@ -490,12 +490,8 @@ static void dma_test_check_errors(struct dma_test *dt, int ret)
 	if (!dt->error_code) {
 		if (dt->link_speed && dt->xd->link_speed != dt->link_speed) {
 			dt->error_code = DMA_TEST_SPEED_ERROR;
-		} else if (dt->link_width) {
-			const struct tb_xdomain *xd = dt->xd;
-
-			if ((dt->link_width == 1 && xd->link_width != TB_LINK_WIDTH_SINGLE) ||
-			    (dt->link_width == 2 && xd->link_width < TB_LINK_WIDTH_DUAL))
-				dt->error_code = DMA_TEST_WIDTH_ERROR;
+		} else if (dt->link_width && dt->link_width != dt->xd->link_width) {
+			dt->error_code = DMA_TEST_WIDTH_ERROR;
 		} else if (dt->packets_to_send != dt->packets_sent ||
 			 dt->packets_to_receive != dt->packets_received ||
 			 dt->crc_errors || dt->buffer_overflow_errors) {
--- a/drivers/thunderbolt/path.c
+++ b/drivers/thunderbolt/path.c
@ -19,9 +19,9 @@ static void tb_dump_hop(const struct tb_path_hop *hop, const struct tb_regs_hop

 	tb_port_dbg(port, " In HopID: %d => Out port: %d Out HopID: %d\n",
 		    hop->in_hop_index, regs->out_port, regs->next_hop);
-	tb_port_dbg(port, "  Weight: %d Priority: %d Credits: %d Drop: %d\n",
-		    regs->weight, regs->priority,
-		    regs->initial_credits, regs->drop_packages);
+	tb_port_dbg(port, "  Weight: %d Priority: %d Credits: %d Drop: %d PM: %d\n",
+		    regs->weight, regs->priority, regs->initial_credits,
+		    regs->drop_packages, regs->pmps);
 	tb_port_dbg(port, "   Counter enabled: %d Counter index: %d\n",
 		    regs->counter_enable, regs->counter);
 	tb_port_dbg(port, "  Flow Control (In/Eg): %d/%d Shared Buffer (In/Eg): %d/%d\n",
@ -535,6 +535,7 @@ int tb_path_activate(struct tb_path *path)
 		hop.next_hop = path->hops[i].next_hop_index;
 		hop.out_port = path->hops[i].out_port->port;
 		hop.initial_credits = path->hops[i].initial_credits;
+		hop.pmps = path->hops[i].pm_support;
 		hop.unknown1 = 0;
 		hop.enable = 1;

--- a/drivers/thunderbolt/quirks.c
+++ b/drivers/thunderbolt/quirks.c
@ -31,6 +31,9 @@ static void quirk_usb3_maximum_bandwidth(struct tb_switch *sw)
 {
 	struct tb_port *port;

+	if (tb_switch_is_icm(sw))
+		return;
+
 	tb_switch_for_each_port(sw, port) {
 		if (!tb_port_is_usb3_down(port))
 			continue;
--- a/drivers/thunderbolt/retimer.c
+++ b/drivers/thunderbolt/retimer.c
@ -94,6 +94,7 @@ static int tb_retimer_nvm_add(struct tb_retimer *rt)
 		goto err_nvm;

 	rt->nvm = nvm;
+	dev_dbg(&rt->dev, "NVM version %x.%x\n", nvm->major, nvm->minor);
 	return 0;

 err_nvm:
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@ -372,6 +372,7 @@ static int tb_switch_nvm_add(struct tb_switch *sw)
 		ret = tb_nvm_add_active(nvm, nvm_read);
 		if (ret)
 			goto err_nvm;
+		tb_sw_dbg(sw, "NVM version %x.%x\n", nvm->major, nvm->minor);
 	}

 	if (!sw->no_nvm_upgrade) {
@ -914,6 +915,48 @@ int tb_port_get_link_speed(struct tb_port *port)
 	}
 }

+/**
+ * tb_port_get_link_generation() - Returns link generation
+ * @port: Lane adapter
+ *
+ * Returns link generation as number or negative errno in case of
+ * failure. Does not distinguish between Thunderbolt 1 and Thunderbolt 2
+ * links so for those always returns 2.
+ */
+int tb_port_get_link_generation(struct tb_port *port)
+{
+	int ret;
+
+	ret = tb_port_get_link_speed(port);
+	if (ret < 0)
+		return ret;
+
+	switch (ret) {
+	case 40:
+		return 4;
+	case 20:
+		return 3;
+	default:
+		return 2;
+	}
+}
+
+static const char *width_name(enum tb_link_width width)
+{
+	switch (width) {
+	case TB_LINK_WIDTH_SINGLE:
+		return "symmetric, single lane";
+	case TB_LINK_WIDTH_DUAL:
+		return "symmetric, dual lanes";
+	case TB_LINK_WIDTH_ASYM_TX:
+		return "asymmetric, 3 transmitters, 1 receiver";
+	case TB_LINK_WIDTH_ASYM_RX:
+		return "asymmetric, 3 receivers, 1 transmitter";
+	default:
+		return "unknown";
+	}
+}
+
 /**
 * tb_port_get_link_width() - Get current link width
 * @port: Port to check (USB4 or CIO)
@ -939,8 +982,15 @@ int tb_port_get_link_width(struct tb_port *port)
 		LANE_ADP_CS_1_CURRENT_WIDTH_SHIFT;
 }

-static bool tb_port_is_width_supported(struct tb_port *port,
-				       unsigned int width_mask)
+/**
+ * tb_port_width_supported() - Is the given link width supported
+ * @port: Port to check
+ * @width: Widths to check (bitmask)
+ *
+ * Can be called to any lane adapter. Checks if given @width is
+ * supported by the hardware and returns %true if it is.
+ */
+bool tb_port_width_supported(struct tb_port *port, unsigned int width)
 {
 	u32 phy, widths;
 	int ret;
@ -948,20 +998,23 @@ static bool tb_port_is_width_supported(struct tb_port *port,
 	if (!port->cap_phy)
 		return false;

+	if (width & (TB_LINK_WIDTH_ASYM_TX | TB_LINK_WIDTH_ASYM_RX)) {
+		if (tb_port_get_link_generation(port) < 4 ||
+		    !usb4_port_asym_supported(port))
+			return false;
+	}
+
 	ret = tb_port_read(port, &phy, TB_CFG_PORT,
 			   port->cap_phy + LANE_ADP_CS_0, 1);
 	if (ret)
 		return false;

-	widths = (phy & LANE_ADP_CS_0_SUPPORTED_WIDTH_MASK) >>
-		LANE_ADP_CS_0_SUPPORTED_WIDTH_SHIFT;
-
-	return widths & width_mask;
-}
-
-static bool is_gen4_link(struct tb_port *port)
-{
-	return tb_port_get_link_speed(port) > 20;
+	/*
+	 * The field encoding is the same as &enum tb_link_width (which is
+	 * passed to @width).
+	 */
+	widths = FIELD_GET(LANE_ADP_CS_0_SUPPORTED_WIDTH_MASK, phy);
+	return widths & width;
 }

 /**
@ -991,15 +1044,23 @@ int tb_port_set_link_width(struct tb_port *port, enum tb_link_width width)
 	switch (width) {
 	case TB_LINK_WIDTH_SINGLE:
 		/* Gen 4 link cannot be single */
-		if (is_gen4_link(port))
+		if (tb_port_get_link_generation(port) >= 4)
 			return -EOPNOTSUPP;
 		val |= LANE_ADP_CS_1_TARGET_WIDTH_SINGLE <<
 			LANE_ADP_CS_1_TARGET_WIDTH_SHIFT;
 		break;
+
 	case TB_LINK_WIDTH_DUAL:
+		if (tb_port_get_link_generation(port) >= 4)
+			return usb4_port_asym_set_link_width(port, width);
 		val |= LANE_ADP_CS_1_TARGET_WIDTH_DUAL <<
 			LANE_ADP_CS_1_TARGET_WIDTH_SHIFT;
 		break;
+
+	case TB_LINK_WIDTH_ASYM_TX:
+	case TB_LINK_WIDTH_ASYM_RX:
+		return usb4_port_asym_set_link_width(port, width);
+
 	default:
 		return -EINVAL;
 	}
@ -1124,7 +1185,7 @@ void tb_port_lane_bonding_disable(struct tb_port *port)
 /**
 * tb_port_wait_for_link_width() - Wait until link reaches specific width
 * @port: Port to wait for
- * @width_mask: Expected link width mask
+ * @width: Expected link width (bitmask)
 * @timeout_msec: Timeout in ms how long to wait
 *
 * Should be used after both ends of the link have been bonded (or
@ -1133,14 +1194,15 @@ void tb_port_lane_bonding_disable(struct tb_port *port)
 * within the given timeout, %0 if it did. Can be passed a mask of
 * expected widths and succeeds if any of the widths is reached.
 */
-int tb_port_wait_for_link_width(struct tb_port *port, unsigned int width_mask,
+int tb_port_wait_for_link_width(struct tb_port *port, unsigned int width,
 				int timeout_msec)
 {
 	ktime_t timeout = ktime_add_ms(ktime_get(), timeout_msec);
 	int ret;

 	/* Gen 4 link does not support single lane */
-	if ((width_mask & TB_LINK_WIDTH_SINGLE) && is_gen4_link(port))
+	if ((width & TB_LINK_WIDTH_SINGLE) &&
+	    tb_port_get_link_generation(port) >= 4)
 		return -EOPNOTSUPP;

 	do {
@ -1153,7 +1215,7 @@ int tb_port_wait_for_link_width(struct tb_port *port, unsigned int width_mask,
 			 */
 			if (ret != -EACCES)
 				return ret;
-		} else if (ret & width_mask) {
+		} else if (ret & width) {
 			return 0;
 		}

@ -1332,7 +1394,7 @@ int tb_pci_port_enable(struct tb_port *port, bool enable)
 * tb_dp_port_hpd_is_active() - Is HPD already active
 * @port: DP out port to check
 *
- * Checks if the DP OUT adapter port has HDP bit already set.
+ * Checks if the DP OUT adapter port has HPD bit already set.
 */
 int tb_dp_port_hpd_is_active(struct tb_port *port)
 {
@ -1344,14 +1406,14 @@ int tb_dp_port_hpd_is_active(struct tb_port *port)
 	if (ret)
 		return ret;

-	return !!(data & ADP_DP_CS_2_HDP);
+	return !!(data & ADP_DP_CS_2_HPD);
 }

 /**
 * tb_dp_port_hpd_clear() - Clear HPD from DP IN port
 * @port: Port to clear HPD
 *
- * If the DP IN port has HDP set, this function can be used to clear it.
+ * If the DP IN port has HPD set, this function can be used to clear it.
 */
 int tb_dp_port_hpd_clear(struct tb_port *port)
 {
@ -1363,7 +1425,7 @@ int tb_dp_port_hpd_clear(struct tb_port *port)
 	if (ret)
 		return ret;

-	data |= ADP_DP_CS_3_HDPC;
+	data |= ADP_DP_CS_3_HPDC;
 	return tb_port_write(port, &data, TB_CFG_PORT,
 			     port->cap_adap + ADP_DP_CS_3, 1);
 }
@ -2697,6 +2759,38 @@ static int tb_switch_update_link_attributes(struct tb_switch *sw)
 	return 0;
 }

+/* Must be called after tb_switch_update_link_attributes() */
+static void tb_switch_link_init(struct tb_switch *sw)
+{
+	struct tb_port *up, *down;
+	bool bonded;
+
+	if (!tb_route(sw) || tb_switch_is_icm(sw))
+		return;
+
+	tb_sw_dbg(sw, "current link speed %u.0 Gb/s\n", sw->link_speed);
+	tb_sw_dbg(sw, "current link width %s\n", width_name(sw->link_width));
+
+	bonded = sw->link_width >= TB_LINK_WIDTH_DUAL;
+
+	/*
+	 * Gen 4 links come up as bonded so update the port structures
+	 * accordingly.
+	 */
+	up = tb_upstream_port(sw);
+	down = tb_switch_downstream_port(sw);
+
+	up->bonded = bonded;
+	if (up->dual_link_port)
+		up->dual_link_port->bonded = bonded;
+	tb_port_update_credits(up);
+
+	down->bonded = bonded;
+	if (down->dual_link_port)
+		down->dual_link_port->bonded = bonded;
+	tb_port_update_credits(down);
+}
+
 /**
 * tb_switch_lane_bonding_enable() - Enable lane bonding
 * @sw: Switch to enable lane bonding
@ -2705,24 +2799,20 @@ static int tb_switch_update_link_attributes(struct tb_switch *sw)
 * switch. If conditions are correct and both switches support the feature,
 * lanes are bonded. It is safe to call this to any switch.
 */
-int tb_switch_lane_bonding_enable(struct tb_switch *sw)
+static int tb_switch_lane_bonding_enable(struct tb_switch *sw)
 {
 	struct tb_port *up, *down;
-	u64 route = tb_route(sw);
-	unsigned int width_mask;
+	unsigned int width;
 	int ret;

-	if (!route)
-		return 0;
-
 	if (!tb_switch_lane_bonding_possible(sw))
 		return 0;

 	up = tb_upstream_port(sw);
 	down = tb_switch_downstream_port(sw);

-	if (!tb_port_is_width_supported(up, TB_LINK_WIDTH_DUAL) ||
-	    !tb_port_is_width_supported(down, TB_LINK_WIDTH_DUAL))
+	if (!tb_port_width_supported(up, TB_LINK_WIDTH_DUAL) ||
+	    !tb_port_width_supported(down, TB_LINK_WIDTH_DUAL))
 		return 0;

 	/*
@ -2746,21 +2836,10 @@ int tb_switch_lane_bonding_enable(struct tb_switch *sw)
 	}

 	/* Any of the widths are all bonded */
-	width_mask = TB_LINK_WIDTH_DUAL | TB_LINK_WIDTH_ASYM_TX |
-		     TB_LINK_WIDTH_ASYM_RX;
+	width = TB_LINK_WIDTH_DUAL | TB_LINK_WIDTH_ASYM_TX |
+		TB_LINK_WIDTH_ASYM_RX;

-	ret = tb_port_wait_for_link_width(down, width_mask, 100);
-	if (ret) {
-		tb_port_warn(down, "timeout enabling lane bonding\n");
-		return ret;
-	}
-
-	tb_port_update_credits(down);
-	tb_port_update_credits(up);
-	tb_switch_update_link_attributes(sw);
-
-	tb_sw_dbg(sw, "lane bonding enabled\n");
-	return ret;
+	return tb_port_wait_for_link_width(down, width, 100);
 }

 /**
@ -2770,20 +2849,27 @@ int tb_switch_lane_bonding_enable(struct tb_switch *sw)
 * Disables lane bonding between @sw and parent. This can be called even
 * if lanes were not bonded originally.
 */
-void tb_switch_lane_bonding_disable(struct tb_switch *sw)
+static int tb_switch_lane_bonding_disable(struct tb_switch *sw)
 {
 	struct tb_port *up, *down;
 	int ret;

-	if (!tb_route(sw))
-		return;
-
 	up = tb_upstream_port(sw);
 	if (!up->bonded)
-		return;
+		return 0;
+
+	/*
+	 * If the link is Gen 4 there is no way to switch the link to
+	 * two single lane links so avoid that here. Also don't bother
+	 * if the link is not up anymore (sw is unplugged).
+	 */
+	ret = tb_port_get_link_generation(up);
+	if (ret < 0)
+		return ret;
+	if (ret >= 4)
+		return -EOPNOTSUPP;

 	down = tb_switch_downstream_port(sw);
-
 	tb_port_lane_bonding_disable(up);
 	tb_port_lane_bonding_disable(down);

@ -2791,15 +2877,160 @@ void tb_switch_lane_bonding_disable(struct tb_switch *sw)
 	 * It is fine if we get other errors as the router might have
 	 * been unplugged.
 	 */
-	ret = tb_port_wait_for_link_width(down, TB_LINK_WIDTH_SINGLE, 100);
-	if (ret == -ETIMEDOUT)
-		tb_sw_warn(sw, "timeout disabling lane bonding\n");
+	return tb_port_wait_for_link_width(down, TB_LINK_WIDTH_SINGLE, 100);
+}
+
+static int tb_switch_asym_enable(struct tb_switch *sw, enum tb_link_width width)
+{
+	struct tb_port *up, *down, *port;
+	enum tb_link_width down_width;
+	int ret;
+
+	up = tb_upstream_port(sw);
+	down = tb_switch_downstream_port(sw);
+
+	if (width == TB_LINK_WIDTH_ASYM_TX) {
+		down_width = TB_LINK_WIDTH_ASYM_RX;
+		port = down;
+	} else {
+		down_width = TB_LINK_WIDTH_ASYM_TX;
+		port = up;
+	}
+
+	ret = tb_port_set_link_width(up, width);
+	if (ret)
+		return ret;
+
+	ret = tb_port_set_link_width(down, down_width);
+	if (ret)
+		return ret;
+
+	/*
+	 * Initiate the change in the router that one of its TX lanes is
+	 * changing to RX but do so only if there is an actual change.
+	 */
+	if (sw->link_width != width) {
+		ret = usb4_port_asym_start(port);
+		if (ret)
+			return ret;
+
+		ret = tb_port_wait_for_link_width(up, width, 100);
+		if (ret)
+			return ret;
+	}
+
+	sw->link_width = width;
+	return 0;
+}
+
+static int tb_switch_asym_disable(struct tb_switch *sw)
+{
+	struct tb_port *up, *down;
+	int ret;
+
+	up = tb_upstream_port(sw);
+	down = tb_switch_downstream_port(sw);
+
+	ret = tb_port_set_link_width(up, TB_LINK_WIDTH_DUAL);
+	if (ret)
+		return ret;
+
+	ret = tb_port_set_link_width(down, TB_LINK_WIDTH_DUAL);
+	if (ret)
+		return ret;
+
+	/*
+	 * Initiate the change in the router that has three TX lanes and
+	 * is changing one of its TX lanes to RX but only if there is a
+	 * change in the link width.
+	 */
+	if (sw->link_width > TB_LINK_WIDTH_DUAL) {
+		if (sw->link_width == TB_LINK_WIDTH_ASYM_TX)
+			ret = usb4_port_asym_start(up);
+		else
+			ret = usb4_port_asym_start(down);
+		if (ret)
+			return ret;
+
+		ret = tb_port_wait_for_link_width(up, TB_LINK_WIDTH_DUAL, 100);
+		if (ret)
+			return ret;
+	}
+
+	sw->link_width = TB_LINK_WIDTH_DUAL;
+	return 0;
+}
+
+/**
+ * tb_switch_set_link_width() - Configure router link width
+ * @sw: Router to configure
+ * @width: The new link width
+ *
+ * Set device router link width to @width from router upstream port
+ * perspective. Supports also asymmetric links if the routers boths side
+ * of the link supports it.
+ *
+ * Does nothing for host router.
+ *
+ * Returns %0 in case of success, negative errno otherwise.
+ */
+int tb_switch_set_link_width(struct tb_switch *sw, enum tb_link_width width)
+{
+	struct tb_port *up, *down;
+	int ret = 0;
+
+	if (!tb_route(sw))
+		return 0;
+
+	up = tb_upstream_port(sw);
+	down = tb_switch_downstream_port(sw);
+
+	switch (width) {
+	case TB_LINK_WIDTH_SINGLE:
+		ret = tb_switch_lane_bonding_disable(sw);
+		break;
+
+	case TB_LINK_WIDTH_DUAL:
+		if (sw->link_width == TB_LINK_WIDTH_ASYM_TX ||
+		    sw->link_width == TB_LINK_WIDTH_ASYM_RX) {
+			ret = tb_switch_asym_disable(sw);
+			if (ret)
+				break;
+		}
+		ret = tb_switch_lane_bonding_enable(sw);
+		break;
+
+	case TB_LINK_WIDTH_ASYM_TX:
+	case TB_LINK_WIDTH_ASYM_RX:
+		ret = tb_switch_asym_enable(sw, width);
+		break;
+	}
+
+	switch (ret) {
+	case 0:
+		break;
+
+	case -ETIMEDOUT:
+		tb_sw_warn(sw, "timeout changing link width\n");
+		return ret;
+
+	case -ENOTCONN:
+	case -EOPNOTSUPP:
+	case -ENODEV:
+		return ret;
+
+	default:
+		tb_sw_dbg(sw, "failed to change link width: %d\n", ret);
+		return ret;
+	}

 	tb_port_update_credits(down);
 	tb_port_update_credits(up);
+
 	tb_switch_update_link_attributes(sw);

-	tb_sw_dbg(sw, "lane bonding disabled\n");
+	tb_sw_dbg(sw, "link width set to %s\n", width_name(width));
+	return ret;
 }

 /**
@ -2959,6 +3190,8 @@ int tb_switch_add(struct tb_switch *sw)
 		if (ret)
 			return ret;

+		tb_switch_link_init(sw);
+
 		ret = tb_switch_clx_init(sw);
 		if (ret)
 			return ret;
--- a/drivers/thunderbolt/tb.c
+++ b/drivers/thunderbolt/tb.c
--- a/drivers/thunderbolt/tb.h
+++ b/drivers/thunderbolt/tb.h
@ -162,11 +162,6 @@ struct tb_switch_tmu {
 * switches) you need to have domain lock held.
 *
 * In USB4 terminology this structure represents a router.
- *
- * Note @link_width is not the same as whether link is bonded or not.
- * For Gen 4 links the link is also bonded when it is asymmetric. The
- * correct way to find out whether the link is bonded or not is to look
- * @bonded field of the upstream port.
 */
 struct tb_switch {
 	struct device dev;
@ -348,6 +343,7 @@ struct tb_retimer {
 *		     the path
 * @nfc_credits: Number of non-flow controlled buffers allocated for the
 *		 @in_port.
+ * @pm_support: Set path PM packet support bit to 1 (for USB4 v2 routers)
 *
 * Hop configuration is always done on the IN port of a switch.
 * in_port and out_port have to be on the same switch. Packets arriving on
@ -368,6 +364,7 @@ struct tb_path_hop {
 	int next_hop_index;
 	unsigned int initial_credits;
 	unsigned int nfc_credits;
+	bool pm_support;
 };

 /**
@ -864,6 +861,15 @@ static inline struct tb_port *tb_switch_downstream_port(struct tb_switch *sw)
 	return tb_port_at(tb_route(sw), tb_switch_parent(sw));
 }

+/**
+ * tb_switch_depth() - Returns depth of the connected router
+ * @sw: Router
+ */
+static inline int tb_switch_depth(const struct tb_switch *sw)
+{
+	return sw->config.depth;
+}
+
 static inline bool tb_switch_is_light_ridge(const struct tb_switch *sw)
 {
 	return sw->config.vendor_id == PCI_VENDOR_ID_INTEL &&
@ -956,8 +962,7 @@ static inline bool tb_switch_is_icm(const struct tb_switch *sw)
 	return !sw->config.enabled;
 }

-int tb_switch_lane_bonding_enable(struct tb_switch *sw);
-void tb_switch_lane_bonding_disable(struct tb_switch *sw);
+int tb_switch_set_link_width(struct tb_switch *sw, enum tb_link_width width);
 int tb_switch_configure_link(struct tb_switch *sw);
 void tb_switch_unconfigure_link(struct tb_switch *sw);

@ -1001,7 +1006,6 @@ static inline bool tb_switch_tmu_is_enabled(const struct tb_switch *sw)
 bool tb_port_clx_is_enabled(struct tb_port *port, unsigned int clx);

 int tb_switch_clx_init(struct tb_switch *sw);
-bool tb_switch_clx_is_supported(const struct tb_switch *sw);
 int tb_switch_clx_enable(struct tb_switch *sw, unsigned int clx);
 int tb_switch_clx_disable(struct tb_switch *sw);

@ -1040,6 +1044,21 @@ void tb_port_release_out_hopid(struct tb_port *port, int hopid);
 struct tb_port *tb_next_port_on_path(struct tb_port *start, struct tb_port *end,
 				     struct tb_port *prev);

+/**
+ * tb_port_path_direction_downstream() - Checks if path directed downstream
+ * @src: Source adapter
+ * @dst: Destination adapter
+ *
+ * Returns %true only if the specified path from source adapter (@src)
+ * to destination adapter (@dst) is directed downstream.
+ */
+static inline bool
+tb_port_path_direction_downstream(const struct tb_port *src,
+				  const struct tb_port *dst)
+{
+	return src->sw->config.depth < dst->sw->config.depth;
+}
+
 static inline bool tb_port_use_credit_allocation(const struct tb_port *port)
 {
 	return tb_port_is_null(port) && port->sw->credit_allocation;
@ -1057,12 +1076,29 @@ static inline bool tb_port_use_credit_allocation(const struct tb_port *port)
 	for ((p) = tb_next_port_on_path((src), (dst), NULL); (p);	\
 	     (p) = tb_next_port_on_path((src), (dst), (p)))

+/**
+ * tb_for_each_upstream_port_on_path() - Iterate over each upstreamm port on path
+ * @src: Source port
+ * @dst: Destination port
+ * @p: Port used as iterator
+ *
+ * Walks over each upstream lane adapter on path from @src to @dst.
+ */
+#define tb_for_each_upstream_port_on_path(src, dst, p)			\
+	for ((p) = tb_next_port_on_path((src), (dst), NULL); (p);	\
+	     (p) = tb_next_port_on_path((src), (dst), (p)))		\
+		if (!tb_port_is_null((p)) || !tb_is_upstream_port((p))) {\
+			continue;					\
+		} else
+
 int tb_port_get_link_speed(struct tb_port *port);
+int tb_port_get_link_generation(struct tb_port *port);
 int tb_port_get_link_width(struct tb_port *port);
+bool tb_port_width_supported(struct tb_port *port, unsigned int width);
 int tb_port_set_link_width(struct tb_port *port, enum tb_link_width width);
 int tb_port_lane_bonding_enable(struct tb_port *port);
 void tb_port_lane_bonding_disable(struct tb_port *port);
-int tb_port_wait_for_link_width(struct tb_port *port, unsigned int width_mask,
+int tb_port_wait_for_link_width(struct tb_port *port, unsigned int width,
 				int timeout_msec);
 int tb_port_update_credits(struct tb_port *port);

@ -1256,6 +1292,11 @@ int usb4_port_router_online(struct tb_port *port);
 int usb4_port_enumerate_retimers(struct tb_port *port);
 bool usb4_port_clx_supported(struct tb_port *port);
 int usb4_port_margining_caps(struct tb_port *port, u32 *caps);
+
+bool usb4_port_asym_supported(struct tb_port *port);
+int usb4_port_asym_set_link_width(struct tb_port *port, enum tb_link_width width);
+int usb4_port_asym_start(struct tb_port *port);
+
 int usb4_port_hw_margin(struct tb_port *port, unsigned int lanes,
 			unsigned int ber_level, bool timing, bool right_high,
 			u32 *results);
@ -1283,7 +1324,6 @@ int usb4_port_retimer_nvm_read(struct tb_port *port, u8 index,
 			       unsigned int address, void *buf, size_t size);

 int usb4_usb3_port_max_link_rate(struct tb_port *port);
-int usb4_usb3_port_actual_link_rate(struct tb_port *port);
 int usb4_usb3_port_allocated_bandwidth(struct tb_port *port, int *upstream_bw,
 				       int *downstream_bw);
 int usb4_usb3_port_allocate_bandwidth(struct tb_port *port, int *upstream_bw,
--- a/drivers/thunderbolt/tb_regs.h
+++ b/drivers/thunderbolt/tb_regs.h
@ -346,10 +346,14 @@ struct tb_regs_port_header {
 #define LANE_ADP_CS_1				0x01
 #define LANE_ADP_CS_1_TARGET_SPEED_MASK		GENMASK(3, 0)
 #define LANE_ADP_CS_1_TARGET_SPEED_GEN3		0xc
-#define LANE_ADP_CS_1_TARGET_WIDTH_MASK		GENMASK(9, 4)
+#define LANE_ADP_CS_1_TARGET_WIDTH_MASK		GENMASK(5, 4)
 #define LANE_ADP_CS_1_TARGET_WIDTH_SHIFT	4
 #define LANE_ADP_CS_1_TARGET_WIDTH_SINGLE	0x1
 #define LANE_ADP_CS_1_TARGET_WIDTH_DUAL		0x3
+#define LANE_ADP_CS_1_TARGET_WIDTH_ASYM_MASK	GENMASK(7, 6)
+#define LANE_ADP_CS_1_TARGET_WIDTH_ASYM_TX	0x1
+#define LANE_ADP_CS_1_TARGET_WIDTH_ASYM_RX	0x2
+#define LANE_ADP_CS_1_TARGET_WIDTH_ASYM_DUAL	0x0
 #define LANE_ADP_CS_1_CL0S_ENABLE		BIT(10)
 #define LANE_ADP_CS_1_CL1_ENABLE		BIT(11)
 #define LANE_ADP_CS_1_CL2_ENABLE		BIT(12)
@ -382,12 +386,15 @@ struct tb_regs_port_header {
 #define PORT_CS_18_WOCS				BIT(16)
 #define PORT_CS_18_WODS				BIT(17)
 #define PORT_CS_18_WOU4S			BIT(18)
+#define PORT_CS_18_CSA				BIT(22)
+#define PORT_CS_18_TIP				BIT(24)
 #define PORT_CS_19				0x13
 #define PORT_CS_19_PC				BIT(3)
 #define PORT_CS_19_PID				BIT(4)
 #define PORT_CS_19_WOC				BIT(16)
 #define PORT_CS_19_WOD				BIT(17)
 #define PORT_CS_19_WOU4				BIT(18)
+#define PORT_CS_19_START_ASYM			BIT(24)

 /* Display Port adapter registers */
 #define ADP_DP_CS_0				0x00
@ -400,7 +407,7 @@ struct tb_regs_port_header {
 #define ADP_DP_CS_1_AUX_RX_HOPID_SHIFT		11
 #define ADP_DP_CS_2				0x02
 #define ADP_DP_CS_2_NRD_MLC_MASK		GENMASK(2, 0)
-#define ADP_DP_CS_2_HDP				BIT(6)
+#define ADP_DP_CS_2_HPD				BIT(6)
 #define ADP_DP_CS_2_NRD_MLR_MASK		GENMASK(9, 7)
 #define ADP_DP_CS_2_NRD_MLR_SHIFT		7
 #define ADP_DP_CS_2_CA				BIT(10)
@ -417,7 +424,7 @@ struct tb_regs_port_header {
 #define ADP_DP_CS_2_ESTIMATED_BW_MASK		GENMASK(31, 24)
 #define ADP_DP_CS_2_ESTIMATED_BW_SHIFT		24
 #define ADP_DP_CS_3				0x03
-#define ADP_DP_CS_3_HDPC			BIT(9)
+#define ADP_DP_CS_3_HPDC			BIT(9)
 #define DP_LOCAL_CAP				0x04
 #define DP_REMOTE_CAP				0x05
 /* For DP IN adapter */
@ -484,9 +491,6 @@ struct tb_regs_port_header {
 #define ADP_USB3_CS_3				0x03
 #define ADP_USB3_CS_3_SCALE_MASK		GENMASK(5, 0)
 #define ADP_USB3_CS_4				0x04
-#define ADP_USB3_CS_4_ALR_MASK			GENMASK(6, 0)
-#define ADP_USB3_CS_4_ALR_20G			0x1
-#define ADP_USB3_CS_4_ULV			BIT(7)
 #define ADP_USB3_CS_4_MSLR_MASK			GENMASK(18, 12)
 #define ADP_USB3_CS_4_MSLR_SHIFT		12
 #define ADP_USB3_CS_4_MSLR_20G			0x1
@ -499,7 +503,8 @@ struct tb_regs_hop {
 			  * out_port (on the incoming port of the next switch)
 			  */
 	u32 out_port:6; /* next port of the path (on the same switch) */
-	u32 initial_credits:8;
+	u32 initial_credits:7;
+	u32 pmps:1;
 	u32 unknown1:6; /* set to zero */
 	bool enable:1;

--- a/drivers/thunderbolt/tunnel.c
+++ b/drivers/thunderbolt/tunnel.c
@ -21,12 +21,18 @@
 #define TB_PCI_PATH_DOWN		0
 #define TB_PCI_PATH_UP			1

+#define TB_PCI_PRIORITY			3
+#define TB_PCI_WEIGHT			1
+
 /* USB3 adapters use always HopID of 8 for both directions */
 #define TB_USB3_HOPID			8

 #define TB_USB3_PATH_DOWN		0
 #define TB_USB3_PATH_UP			1

+#define TB_USB3_PRIORITY		3
+#define TB_USB3_WEIGHT			2
+
 /* DP adapters use HopID 8 for AUX and 9 for Video */
 #define TB_DP_AUX_TX_HOPID		8
 #define TB_DP_AUX_RX_HOPID		8
@ -36,6 +42,12 @@
 #define TB_DP_AUX_PATH_OUT		1
 #define TB_DP_AUX_PATH_IN		2

+#define TB_DP_VIDEO_PRIORITY		1
+#define TB_DP_VIDEO_WEIGHT		1
+
+#define TB_DP_AUX_PRIORITY		2
+#define TB_DP_AUX_WEIGHT		1
+
 /* Minimum number of credits needed for PCIe path */
 #define TB_MIN_PCIE_CREDITS		6U
 /*
@ -46,6 +58,18 @@
 /* Minimum number of credits for DMA path */
 #define TB_MIN_DMA_CREDITS		1

+#define TB_DMA_PRIORITY			5
+#define TB_DMA_WEIGHT			1
+
+/*
+ * Reserve additional bandwidth for USB 3.x and PCIe bulk traffic
+ * according to USB4 v2 Connection Manager guide. This ends up reserving
+ * 1500 Mb/s for PCIe and 3000 Mb/s for USB 3.x taking weights into
+ * account.
+ */
+#define USB4_V2_PCI_MIN_BANDWIDTH	(1500 * TB_PCI_WEIGHT)
+#define USB4_V2_USB3_MIN_BANDWIDTH	(1500 * TB_USB3_WEIGHT)
+
 static unsigned int dma_credits = TB_DMA_CREDITS;
 module_param(dma_credits, uint, 0444);
 MODULE_PARM_DESC(dma_credits, "specify custom credits for DMA tunnels (default: "
@ -58,27 +82,6 @@ MODULE_PARM_DESC(bw_alloc_mode,

 static const char * const tb_tunnel_names[] = { "PCI", "DP", "DMA", "USB3" };

-#define __TB_TUNNEL_PRINT(level, tunnel, fmt, arg...)                   \
-	do {                                                            \
-		struct tb_tunnel *__tunnel = (tunnel);                  \
-		level(__tunnel->tb, "%llx:%u <-> %llx:%u (%s): " fmt,   \
-		      tb_route(__tunnel->src_port->sw),                 \
-		      __tunnel->src_port->port,                         \
-		      tb_route(__tunnel->dst_port->sw),                 \
-		      __tunnel->dst_port->port,                         \
-		      tb_tunnel_names[__tunnel->type],			\
-		      ## arg);                                          \
-	} while (0)
-
-#define tb_tunnel_WARN(tunnel, fmt, arg...) \
-	__TB_TUNNEL_PRINT(tb_WARN, tunnel, fmt, ##arg)
-#define tb_tunnel_warn(tunnel, fmt, arg...) \
-	__TB_TUNNEL_PRINT(tb_warn, tunnel, fmt, ##arg)
-#define tb_tunnel_info(tunnel, fmt, arg...) \
-	__TB_TUNNEL_PRINT(tb_info, tunnel, fmt, ##arg)
-#define tb_tunnel_dbg(tunnel, fmt, arg...) \
-	__TB_TUNNEL_PRINT(tb_dbg, tunnel, fmt, ##arg)
-
 static inline unsigned int tb_usable_credits(const struct tb_port *port)
 {
 	return port->total_credits - port->ctl_credits;
@ -131,6 +134,16 @@ static unsigned int tb_available_credits(const struct tb_port *port,
 	return credits > 0 ? credits : 0;
 }

+static void tb_init_pm_support(struct tb_path_hop *hop)
+{
+	struct tb_port *out_port = hop->out_port;
+	struct tb_port *in_port = hop->in_port;
+
+	if (tb_port_is_null(in_port) && tb_port_is_null(out_port) &&
+	    usb4_switch_version(in_port->sw) >= 2)
+		hop->pm_support = true;
+}
+
 static struct tb_tunnel *tb_tunnel_alloc(struct tb *tb, size_t npaths,
 					 enum tb_tunnel_type type)
 {
@ -156,11 +169,11 @@ static struct tb_tunnel *tb_tunnel_alloc(struct tb *tb, size_t npaths,

 static int tb_pci_set_ext_encapsulation(struct tb_tunnel *tunnel, bool enable)
 {
+	struct tb_port *port = tb_upstream_port(tunnel->dst_port->sw);
 	int ret;

 	/* Only supported of both routers are at least USB4 v2 */
-	if (usb4_switch_version(tunnel->src_port->sw) < 2 ||
-	    usb4_switch_version(tunnel->dst_port->sw) < 2)
+	if (tb_port_get_link_generation(port) < 4)
 		return 0;

 	ret = usb4_pci_port_set_ext_encapsulation(tunnel->src_port, enable);
@ -234,8 +247,8 @@ static int tb_pci_init_path(struct tb_path *path)
 	path->egress_shared_buffer = TB_PATH_NONE;
 	path->ingress_fc_enable = TB_PATH_ALL;
 	path->ingress_shared_buffer = TB_PATH_NONE;
-	path->priority = 3;
-	path->weight = 1;
+	path->priority = TB_PCI_PRIORITY;
+	path->weight = TB_PCI_WEIGHT;
 	path->drop_packages = 0;

 	tb_path_for_each_hop(path, hop) {
@ -376,6 +389,51 @@ struct tb_tunnel *tb_tunnel_alloc_pci(struct tb *tb, struct tb_port *up,
 	return NULL;
 }

+/**
+ * tb_tunnel_reserved_pci() - Amount of bandwidth to reserve for PCIe
+ * @port: Lane 0 adapter
+ * @reserved_up: Upstream bandwidth in Mb/s to reserve
+ * @reserved_down: Downstream bandwidth in Mb/s to reserve
+ *
+ * Can be called to any connected lane 0 adapter to find out how much
+ * bandwidth needs to be left in reserve for possible PCIe bulk traffic.
+ * Returns true if there is something to be reserved and writes the
+ * amount to @reserved_down/@reserved_up. Otherwise returns false and
+ * does not touch the parameters.
+ */
+bool tb_tunnel_reserved_pci(struct tb_port *port, int *reserved_up,
+			    int *reserved_down)
+{
+	if (WARN_ON_ONCE(!port->remote))
+		return false;
+
+	if (!tb_acpi_may_tunnel_pcie())
+		return false;
+
+	if (tb_port_get_link_generation(port) < 4)
+		return false;
+
+	/* Must have PCIe adapters */
+	if (tb_is_upstream_port(port)) {
+		if (!tb_switch_find_port(port->sw, TB_TYPE_PCIE_UP))
+			return false;
+		if (!tb_switch_find_port(port->remote->sw, TB_TYPE_PCIE_DOWN))
+			return false;
+	} else {
+		if (!tb_switch_find_port(port->sw, TB_TYPE_PCIE_DOWN))
+			return false;
+		if (!tb_switch_find_port(port->remote->sw, TB_TYPE_PCIE_UP))
+			return false;
+	}
+
+	*reserved_up = USB4_V2_PCI_MIN_BANDWIDTH;
+	*reserved_down = USB4_V2_PCI_MIN_BANDWIDTH;
+
+	tb_port_dbg(port, "reserving %u/%u Mb/s for PCIe\n", *reserved_up,
+		    *reserved_down);
+	return true;
+}
+
 static bool tb_dp_is_usb4(const struct tb_switch *sw)
 {
 	/* Titan Ridge DP adapters need the same treatment as USB4 */
@ -614,8 +672,9 @@ static int tb_dp_xchg_caps(struct tb_tunnel *tunnel)

 	in_rate = tb_dp_cap_get_rate(in_dp_cap);
 	in_lanes = tb_dp_cap_get_lanes(in_dp_cap);
-	tb_port_dbg(in, "maximum supported bandwidth %u Mb/s x%u = %u Mb/s\n",
-		    in_rate, in_lanes, tb_dp_bandwidth(in_rate, in_lanes));
+	tb_tunnel_dbg(tunnel,
+		      "DP IN maximum supported bandwidth %u Mb/s x%u = %u Mb/s\n",
+		      in_rate, in_lanes, tb_dp_bandwidth(in_rate, in_lanes));

 	/*
 	 * If the tunnel bandwidth is limited (max_bw is set) then see
@ -624,10 +683,11 @@ static int tb_dp_xchg_caps(struct tb_tunnel *tunnel)
 	out_rate = tb_dp_cap_get_rate(out_dp_cap);
 	out_lanes = tb_dp_cap_get_lanes(out_dp_cap);
 	bw = tb_dp_bandwidth(out_rate, out_lanes);
-	tb_port_dbg(out, "maximum supported bandwidth %u Mb/s x%u = %u Mb/s\n",
-		    out_rate, out_lanes, bw);
+	tb_tunnel_dbg(tunnel,
+		      "DP OUT maximum supported bandwidth %u Mb/s x%u = %u Mb/s\n",
+		      out_rate, out_lanes, bw);

-	if (in->sw->config.depth < out->sw->config.depth)
+	if (tb_port_path_direction_downstream(in, out))
 		max_bw = tunnel->max_down;
 	else
 		max_bw = tunnel->max_up;
@ -639,13 +699,14 @@ static int tb_dp_xchg_caps(struct tb_tunnel *tunnel)
 					     out_rate, out_lanes, &new_rate,
 					     &new_lanes);
 		if (ret) {
-			tb_port_info(out, "not enough bandwidth for DP tunnel\n");
+			tb_tunnel_info(tunnel, "not enough bandwidth\n");
 			return ret;
 		}

 		new_bw = tb_dp_bandwidth(new_rate, new_lanes);
-		tb_port_dbg(out, "bandwidth reduced to %u Mb/s x%u = %u Mb/s\n",
-			    new_rate, new_lanes, new_bw);
+		tb_tunnel_dbg(tunnel,
+			      "bandwidth reduced to %u Mb/s x%u = %u Mb/s\n",
+			      new_rate, new_lanes, new_bw);

 		/*
 		 * Set new rate and number of lanes before writing it to
@ -662,7 +723,7 @@ static int tb_dp_xchg_caps(struct tb_tunnel *tunnel)
 	 */
 	if (tb_route(out->sw) && tb_switch_is_titan_ridge(out->sw)) {
 		out_dp_cap |= DP_COMMON_CAP_LTTPR_NS;
-		tb_port_dbg(out, "disabling LTTPR\n");
+		tb_tunnel_dbg(tunnel, "disabling LTTPR\n");
 	}

 	return tb_port_write(in, &out_dp_cap, TB_CFG_PORT,
@ -712,8 +773,8 @@ static int tb_dp_bandwidth_alloc_mode_enable(struct tb_tunnel *tunnel)
 	lanes = min(in_lanes, out_lanes);
 	tmp = tb_dp_bandwidth(rate, lanes);

-	tb_port_dbg(in, "non-reduced bandwidth %u Mb/s x%u = %u Mb/s\n", rate,
-		    lanes, tmp);
+	tb_tunnel_dbg(tunnel, "non-reduced bandwidth %u Mb/s x%u = %u Mb/s\n",
+		      rate, lanes, tmp);

 	ret = usb4_dp_port_set_nrd(in, rate, lanes);
 	if (ret)
@ -728,15 +789,15 @@ static int tb_dp_bandwidth_alloc_mode_enable(struct tb_tunnel *tunnel)
 	rate = min(in_rate, out_rate);
 	tmp = tb_dp_bandwidth(rate, lanes);

-	tb_port_dbg(in,
-		    "maximum bandwidth through allocation mode %u Mb/s x%u = %u Mb/s\n",
-		    rate, lanes, tmp);
+	tb_tunnel_dbg(tunnel,
+		      "maximum bandwidth through allocation mode %u Mb/s x%u = %u Mb/s\n",
+		      rate, lanes, tmp);

 	for (granularity = 250; tmp / granularity > 255 && granularity <= 1000;
 	     granularity *= 2)
 		;

-	tb_port_dbg(in, "granularity %d Mb/s\n", granularity);
+	tb_tunnel_dbg(tunnel, "granularity %d Mb/s\n", granularity);

 	/*
 	 * Returns -EINVAL if granularity above is outside of the
@ -751,12 +812,12 @@ static int tb_dp_bandwidth_alloc_mode_enable(struct tb_tunnel *tunnel)
 	 * max_up/down fields. For discovery we just read what the
 	 * estimation was set to.
 	 */
-	if (in->sw->config.depth < out->sw->config.depth)
+	if (tb_port_path_direction_downstream(in, out))
 		estimated_bw = tunnel->max_down;
 	else
 		estimated_bw = tunnel->max_up;

-	tb_port_dbg(in, "estimated bandwidth %d Mb/s\n", estimated_bw);
+	tb_tunnel_dbg(tunnel, "estimated bandwidth %d Mb/s\n", estimated_bw);

 	ret = usb4_dp_port_set_estimated_bandwidth(in, estimated_bw);
 	if (ret)
@ -767,7 +828,7 @@ static int tb_dp_bandwidth_alloc_mode_enable(struct tb_tunnel *tunnel)
 	if (ret)
 		return ret;

-	tb_port_dbg(in, "bandwidth allocation mode enabled\n");
+	tb_tunnel_dbg(tunnel, "bandwidth allocation mode enabled\n");
 	return 0;
 }

@ -788,7 +849,7 @@ static int tb_dp_init(struct tb_tunnel *tunnel)
 	if (!usb4_dp_port_bandwidth_mode_supported(in))
 		return 0;

-	tb_port_dbg(in, "bandwidth allocation mode supported\n");
+	tb_tunnel_dbg(tunnel, "bandwidth allocation mode supported\n");

 	ret = usb4_dp_port_set_cm_id(in, tb->index);
 	if (ret)
@ -805,7 +866,7 @@ static void tb_dp_deinit(struct tb_tunnel *tunnel)
 		return;
 	if (usb4_dp_port_bandwidth_mode_enabled(in)) {
 		usb4_dp_port_set_cm_bandwidth_mode_supported(in, false);
-		tb_port_dbg(in, "bandwidth allocation mode disabled\n");
+		tb_tunnel_dbg(tunnel, "bandwidth allocation mode disabled\n");
 	}
 }

@ -921,10 +982,7 @@ static int tb_dp_bandwidth_mode_consumed_bandwidth(struct tb_tunnel *tunnel,
 	if (allocated_bw == max_bw)
 		allocated_bw = ret;

-	tb_port_dbg(in, "consumed bandwidth through allocation mode %d Mb/s\n",
-		    allocated_bw);
-
-	if (in->sw->config.depth < out->sw->config.depth) {
+	if (tb_port_path_direction_downstream(in, out)) {
 		*consumed_up = 0;
 		*consumed_down = allocated_bw;
 	} else {
@ -959,7 +1017,7 @@ static int tb_dp_allocated_bandwidth(struct tb_tunnel *tunnel, int *allocated_up
 		if (allocated_bw == max_bw)
 			allocated_bw = ret;

-		if (in->sw->config.depth < out->sw->config.depth) {
+		if (tb_port_path_direction_downstream(in, out)) {
 			*allocated_up = 0;
 			*allocated_down = allocated_bw;
 		} else {
@ -987,7 +1045,7 @@ static int tb_dp_alloc_bandwidth(struct tb_tunnel *tunnel, int *alloc_up,
 	if (ret < 0)
 		return ret;

-	if (in->sw->config.depth < out->sw->config.depth) {
+	if (tb_port_path_direction_downstream(in, out)) {
 		tmp = min(*alloc_down, max_bw);
 		ret = usb4_dp_port_allocate_bandwidth(in, tmp);
 		if (ret)
@ -1006,9 +1064,6 @@ static int tb_dp_alloc_bandwidth(struct tb_tunnel *tunnel, int *alloc_up,
 	/* Now we can use BW mode registers to figure out the bandwidth */
 	/* TODO: need to handle discovery too */
 	tunnel->bw_mode = true;
-
-	tb_port_dbg(in, "allocated bandwidth through allocation mode %d Mb/s\n",
-		    tmp);
 	return 0;
 }

@ -1035,8 +1090,7 @@ static int tb_dp_read_dprx(struct tb_tunnel *tunnel, u32 *rate, u32 *lanes,
 			*rate = tb_dp_cap_get_rate(val);
 			*lanes = tb_dp_cap_get_lanes(val);

-			tb_port_dbg(in, "consumed bandwidth through DPRX %d Mb/s\n",
-				    tb_dp_bandwidth(*rate, *lanes));
+			tb_tunnel_dbg(tunnel, "DPRX read done\n");
 			return 0;
 		}
 		usleep_range(100, 150);
@ -1073,9 +1127,6 @@ static int tb_dp_read_cap(struct tb_tunnel *tunnel, unsigned int cap, u32 *rate,

 	*rate = tb_dp_cap_get_rate(val);
 	*lanes = tb_dp_cap_get_lanes(val);
-
-	tb_port_dbg(in, "bandwidth from %#x capability %d Mb/s\n", cap,
-		    tb_dp_bandwidth(*rate, *lanes));
 	return 0;
 }

@ -1092,7 +1143,7 @@ static int tb_dp_maximum_bandwidth(struct tb_tunnel *tunnel, int *max_up,
 	if (ret < 0)
 		return ret;

-	if (in->sw->config.depth < tunnel->dst_port->sw->config.depth) {
+	if (tb_port_path_direction_downstream(in, tunnel->dst_port)) {
 		*max_up = 0;
 		*max_down = ret;
 	} else {
@ -1150,7 +1201,7 @@ static int tb_dp_consumed_bandwidth(struct tb_tunnel *tunnel, int *consumed_up,
 		return 0;
 	}

-	if (in->sw->config.depth < tunnel->dst_port->sw->config.depth) {
+	if (tb_port_path_direction_downstream(in, tunnel->dst_port)) {
 		*consumed_up = 0;
 		*consumed_down = tb_dp_bandwidth(rate, lanes);
 	} else {
@ -1172,7 +1223,7 @@ static void tb_dp_init_aux_credits(struct tb_path_hop *hop)
 		hop->initial_credits = 1;
 }

-static void tb_dp_init_aux_path(struct tb_path *path)
+static void tb_dp_init_aux_path(struct tb_path *path, bool pm_support)
 {
 	struct tb_path_hop *hop;

@ -1180,11 +1231,14 @@ static void tb_dp_init_aux_path(struct tb_path *path)
 	path->egress_shared_buffer = TB_PATH_NONE;
 	path->ingress_fc_enable = TB_PATH_ALL;
 	path->ingress_shared_buffer = TB_PATH_NONE;
-	path->priority = 2;
-	path->weight = 1;
+	path->priority = TB_DP_AUX_PRIORITY;
+	path->weight = TB_DP_AUX_WEIGHT;

-	tb_path_for_each_hop(path, hop)
+	tb_path_for_each_hop(path, hop) {
 		tb_dp_init_aux_credits(hop);
+		if (pm_support)
+			tb_init_pm_support(hop);
+	}
 }

 static int tb_dp_init_video_credits(struct tb_path_hop *hop)
@ -1216,7 +1270,7 @@ static int tb_dp_init_video_credits(struct tb_path_hop *hop)
 	return 0;
 }

-static int tb_dp_init_video_path(struct tb_path *path)
+static int tb_dp_init_video_path(struct tb_path *path, bool pm_support)
 {
 	struct tb_path_hop *hop;

@ -1224,8 +1278,8 @@ static int tb_dp_init_video_path(struct tb_path *path)
 	path->egress_shared_buffer = TB_PATH_NONE;
 	path->ingress_fc_enable = TB_PATH_NONE;
 	path->ingress_shared_buffer = TB_PATH_NONE;
-	path->priority = 1;
-	path->weight = 1;
+	path->priority = TB_DP_VIDEO_PRIORITY;
+	path->weight = TB_DP_VIDEO_WEIGHT;

 	tb_path_for_each_hop(path, hop) {
 		int ret;
@ -1233,6 +1287,8 @@ static int tb_dp_init_video_path(struct tb_path *path)
 		ret = tb_dp_init_video_credits(hop);
 		if (ret)
 			return ret;
+		if (pm_support)
+			tb_init_pm_support(hop);
 	}

 	return 0;
@ -1253,8 +1309,9 @@ static void tb_dp_dump(struct tb_tunnel *tunnel)
 	rate = tb_dp_cap_get_rate(dp_cap);
 	lanes = tb_dp_cap_get_lanes(dp_cap);

-	tb_port_dbg(in, "maximum supported bandwidth %u Mb/s x%u = %u Mb/s\n",
-		    rate, lanes, tb_dp_bandwidth(rate, lanes));
+	tb_tunnel_dbg(tunnel,
+		      "DP IN maximum supported bandwidth %u Mb/s x%u = %u Mb/s\n",
+		      rate, lanes, tb_dp_bandwidth(rate, lanes));

 	out = tunnel->dst_port;

@ -1265,8 +1322,9 @@ static void tb_dp_dump(struct tb_tunnel *tunnel)
 	rate = tb_dp_cap_get_rate(dp_cap);
 	lanes = tb_dp_cap_get_lanes(dp_cap);

-	tb_port_dbg(out, "maximum supported bandwidth %u Mb/s x%u = %u Mb/s\n",
-		    rate, lanes, tb_dp_bandwidth(rate, lanes));
+	tb_tunnel_dbg(tunnel,
+		      "DP OUT maximum supported bandwidth %u Mb/s x%u = %u Mb/s\n",
+		      rate, lanes, tb_dp_bandwidth(rate, lanes));

 	if (tb_port_read(in, &dp_cap, TB_CFG_PORT,
 			 in->cap_adap + DP_REMOTE_CAP, 1))
@ -1275,8 +1333,8 @@ static void tb_dp_dump(struct tb_tunnel *tunnel)
 	rate = tb_dp_cap_get_rate(dp_cap);
 	lanes = tb_dp_cap_get_lanes(dp_cap);

-	tb_port_dbg(in, "reduced bandwidth %u Mb/s x%u = %u Mb/s\n",
-		    rate, lanes, tb_dp_bandwidth(rate, lanes));
+	tb_tunnel_dbg(tunnel, "reduced bandwidth %u Mb/s x%u = %u Mb/s\n",
+		      rate, lanes, tb_dp_bandwidth(rate, lanes));
 }

 /**
@ -1322,7 +1380,7 @@ struct tb_tunnel *tb_tunnel_discover_dp(struct tb *tb, struct tb_port *in,
 		goto err_free;
 	}
 	tunnel->paths[TB_DP_VIDEO_PATH_OUT] = path;
-	if (tb_dp_init_video_path(tunnel->paths[TB_DP_VIDEO_PATH_OUT]))
+	if (tb_dp_init_video_path(tunnel->paths[TB_DP_VIDEO_PATH_OUT], false))
 		goto err_free;

 	path = tb_path_discover(in, TB_DP_AUX_TX_HOPID, NULL, -1, NULL, "AUX TX",
@ -1330,14 +1388,14 @@ struct tb_tunnel *tb_tunnel_discover_dp(struct tb *tb, struct tb_port *in,
 	if (!path)
 		goto err_deactivate;
 	tunnel->paths[TB_DP_AUX_PATH_OUT] = path;
-	tb_dp_init_aux_path(tunnel->paths[TB_DP_AUX_PATH_OUT]);
+	tb_dp_init_aux_path(tunnel->paths[TB_DP_AUX_PATH_OUT], false);

 	path = tb_path_discover(tunnel->dst_port, -1, in, TB_DP_AUX_RX_HOPID,
 				&port, "AUX RX", alloc_hopid);
 	if (!path)
 		goto err_deactivate;
 	tunnel->paths[TB_DP_AUX_PATH_IN] = path;
-	tb_dp_init_aux_path(tunnel->paths[TB_DP_AUX_PATH_IN]);
+	tb_dp_init_aux_path(tunnel->paths[TB_DP_AUX_PATH_IN], false);

 	/* Validate that the tunnel is complete */
 	if (!tb_port_is_dpout(tunnel->dst_port)) {
@ -1392,6 +1450,7 @@ struct tb_tunnel *tb_tunnel_alloc_dp(struct tb *tb, struct tb_port *in,
 	struct tb_tunnel *tunnel;
 	struct tb_path **paths;
 	struct tb_path *path;
+	bool pm_support;

 	if (WARN_ON(!in->cap_adap || !out->cap_adap))
 		return NULL;
@ -1413,26 +1472,27 @@ struct tb_tunnel *tb_tunnel_alloc_dp(struct tb *tb, struct tb_port *in,
 	tunnel->max_down = max_down;

 	paths = tunnel->paths;
+	pm_support = usb4_switch_version(in->sw) >= 2;

 	path = tb_path_alloc(tb, in, TB_DP_VIDEO_HOPID, out, TB_DP_VIDEO_HOPID,
 			     link_nr, "Video");
 	if (!path)
 		goto err_free;
-	tb_dp_init_video_path(path);
+	tb_dp_init_video_path(path, pm_support);
 	paths[TB_DP_VIDEO_PATH_OUT] = path;

 	path = tb_path_alloc(tb, in, TB_DP_AUX_TX_HOPID, out,
 			     TB_DP_AUX_TX_HOPID, link_nr, "AUX TX");
 	if (!path)
 		goto err_free;
-	tb_dp_init_aux_path(path);
+	tb_dp_init_aux_path(path, pm_support);
 	paths[TB_DP_AUX_PATH_OUT] = path;

 	path = tb_path_alloc(tb, out, TB_DP_AUX_RX_HOPID, in,
 			     TB_DP_AUX_RX_HOPID, link_nr, "AUX RX");
 	if (!path)
 		goto err_free;
-	tb_dp_init_aux_path(path);
+	tb_dp_init_aux_path(path, pm_support);
 	paths[TB_DP_AUX_PATH_IN] = path;

 	return tunnel;
@ -1497,8 +1557,8 @@ static int tb_dma_init_rx_path(struct tb_path *path, unsigned int credits)
 	path->ingress_fc_enable = TB_PATH_ALL;
 	path->egress_shared_buffer = TB_PATH_NONE;
 	path->ingress_shared_buffer = TB_PATH_NONE;
-	path->priority = 5;
-	path->weight = 1;
+	path->priority = TB_DMA_PRIORITY;
+	path->weight = TB_DMA_WEIGHT;
 	path->clear_fc = true;

 	/*
@ -1531,8 +1591,8 @@ static int tb_dma_init_tx_path(struct tb_path *path, unsigned int credits)
 	path->ingress_fc_enable = TB_PATH_ALL;
 	path->egress_shared_buffer = TB_PATH_NONE;
 	path->ingress_shared_buffer = TB_PATH_NONE;
-	path->priority = 5;
-	path->weight = 1;
+	path->priority = TB_DMA_PRIORITY;
+	path->weight = TB_DMA_WEIGHT;
 	path->clear_fc = true;

 	tb_path_for_each_hop(path, hop) {
@ -1758,14 +1818,23 @@ static int tb_usb3_activate(struct tb_tunnel *tunnel, bool activate)
 static int tb_usb3_consumed_bandwidth(struct tb_tunnel *tunnel,
 		int *consumed_up, int *consumed_down)
 {
-	int pcie_enabled = tb_acpi_may_tunnel_pcie();
+	struct tb_port *port = tb_upstream_port(tunnel->dst_port->sw);
+	int pcie_weight = tb_acpi_may_tunnel_pcie() ? TB_PCI_WEIGHT : 0;

 	/*
 	 * PCIe tunneling, if enabled, affects the USB3 bandwidth so
 	 * take that it into account here.
 	 */
-	*consumed_up = tunnel->allocated_up * (3 + pcie_enabled) / 3;
-	*consumed_down = tunnel->allocated_down * (3 + pcie_enabled) / 3;
+	*consumed_up = tunnel->allocated_up *
+		(TB_USB3_WEIGHT + pcie_weight) / TB_USB3_WEIGHT;
+	*consumed_down = tunnel->allocated_down *
+		(TB_USB3_WEIGHT + pcie_weight) / TB_USB3_WEIGHT;
+
+	if (tb_port_get_link_generation(port) >= 4) {
+		*consumed_up = max(*consumed_up, USB4_V2_USB3_MIN_BANDWIDTH);
+		*consumed_down = max(*consumed_down, USB4_V2_USB3_MIN_BANDWIDTH);
+	}
+
 	return 0;
 }

@ -1790,17 +1859,10 @@ static void tb_usb3_reclaim_available_bandwidth(struct tb_tunnel *tunnel,
 {
 	int ret, max_rate, allocate_up, allocate_down;

-	ret = usb4_usb3_port_actual_link_rate(tunnel->src_port);
+	ret = tb_usb3_max_link_rate(tunnel->dst_port, tunnel->src_port);
 	if (ret < 0) {
-		tb_tunnel_warn(tunnel, "failed to read actual link rate\n");
+		tb_tunnel_warn(tunnel, "failed to read maximum link rate\n");
 		return;
-	} else if (!ret) {
-		/* Use maximum link rate if the link valid is not set */
-		ret = tb_usb3_max_link_rate(tunnel->dst_port, tunnel->src_port);
-		if (ret < 0) {
-			tb_tunnel_warn(tunnel, "failed to read maximum link rate\n");
-			return;
-		}
 	}

 	/*
@ -1871,8 +1933,8 @@ static void tb_usb3_init_path(struct tb_path *path)
 	path->egress_shared_buffer = TB_PATH_NONE;
 	path->ingress_fc_enable = TB_PATH_ALL;
 	path->ingress_shared_buffer = TB_PATH_NONE;
-	path->priority = 3;
-	path->weight = 3;
+	path->priority = TB_USB3_PRIORITY;
+	path->weight = TB_USB3_WEIGHT;
 	path->drop_packages = 0;

 	tb_path_for_each_hop(path, hop)
@ -2387,3 +2449,8 @@ void tb_tunnel_reclaim_available_bandwidth(struct tb_tunnel *tunnel,
 		tunnel->reclaim_available_bandwidth(tunnel, available_up,
 						    available_down);
 }
+
+const char *tb_tunnel_type_name(const struct tb_tunnel *tunnel)
+{
+	return tb_tunnel_names[tunnel->type];
+}
--- a/drivers/thunderbolt/tunnel.h
+++ b/drivers/thunderbolt/tunnel.h
@ -80,6 +80,8 @@ struct tb_tunnel *tb_tunnel_discover_pci(struct tb *tb, struct tb_port *down,
 					 bool alloc_hopid);
 struct tb_tunnel *tb_tunnel_alloc_pci(struct tb *tb, struct tb_port *up,
 				      struct tb_port *down);
+bool tb_tunnel_reserved_pci(struct tb_port *port, int *reserved_up,
+			    int *reserved_down);
 struct tb_tunnel *tb_tunnel_discover_dp(struct tb *tb, struct tb_port *in,
 					bool alloc_hopid);
 struct tb_tunnel *tb_tunnel_alloc_dp(struct tb *tb, struct tb_port *in,
@ -137,5 +139,27 @@ static inline bool tb_tunnel_is_usb3(const struct tb_tunnel *tunnel)
 	return tunnel->type == TB_TUNNEL_USB3;
 }

-#endif
+const char *tb_tunnel_type_name(const struct tb_tunnel *tunnel);

+#define __TB_TUNNEL_PRINT(level, tunnel, fmt, arg...)                   \
+	do {                                                            \
+		struct tb_tunnel *__tunnel = (tunnel);                  \
+		level(__tunnel->tb, "%llx:%u <-> %llx:%u (%s): " fmt,   \
+		      tb_route(__tunnel->src_port->sw),                 \
+		      __tunnel->src_port->port,                         \
+		      tb_route(__tunnel->dst_port->sw),                 \
+		      __tunnel->dst_port->port,                         \
+		      tb_tunnel_type_name(__tunnel),			\
+		      ## arg);                                          \
+	} while (0)
+
+#define tb_tunnel_WARN(tunnel, fmt, arg...) \
+	__TB_TUNNEL_PRINT(tb_WARN, tunnel, fmt, ##arg)
+#define tb_tunnel_warn(tunnel, fmt, arg...) \
+	__TB_TUNNEL_PRINT(tb_warn, tunnel, fmt, ##arg)
+#define tb_tunnel_info(tunnel, fmt, arg...) \
+	__TB_TUNNEL_PRINT(tb_info, tunnel, fmt, ##arg)
+#define tb_tunnel_dbg(tunnel, fmt, arg...) \
+	__TB_TUNNEL_PRINT(tb_dbg, tunnel, fmt, ##arg)
+
+#endif
--- a/drivers/thunderbolt/usb4.c
+++ b/drivers/thunderbolt/usb4.c
@ -1454,6 +1454,112 @@ bool usb4_port_clx_supported(struct tb_port *port)
 	return !!(val & PORT_CS_18_CPS);
 }

+/**
+ * usb4_port_asym_supported() - If the port supports asymmetric link
+ * @port: USB4 port
+ *
+ * Checks if the port and the cable supports asymmetric link and returns
+ * %true in that case.
+ */
+bool usb4_port_asym_supported(struct tb_port *port)
+{
+	u32 val;
+
+	if (!port->cap_usb4)
+		return false;
+
+	if (tb_port_read(port, &val, TB_CFG_PORT, port->cap_usb4 + PORT_CS_18, 1))
+		return false;
+
+	return !!(val & PORT_CS_18_CSA);
+}
+
+/**
+ * usb4_port_asym_set_link_width() - Set link width to asymmetric or symmetric
+ * @port: USB4 port
+ * @width: Asymmetric width to configure
+ *
+ * Sets USB4 port link width to @width. Can be called for widths where
+ * usb4_port_asym_width_supported() returned @true.
+ */
+int usb4_port_asym_set_link_width(struct tb_port *port, enum tb_link_width width)
+{
+	u32 val;
+	int ret;
+
+	if (!port->cap_phy)
+		return -EINVAL;
+
+	ret = tb_port_read(port, &val, TB_CFG_PORT,
+			   port->cap_phy + LANE_ADP_CS_1, 1);
+	if (ret)
+		return ret;
+
+	val &= ~LANE_ADP_CS_1_TARGET_WIDTH_ASYM_MASK;
+	switch (width) {
+	case TB_LINK_WIDTH_DUAL:
+		val |= FIELD_PREP(LANE_ADP_CS_1_TARGET_WIDTH_ASYM_MASK,
+				  LANE_ADP_CS_1_TARGET_WIDTH_ASYM_DUAL);
+		break;
+	case TB_LINK_WIDTH_ASYM_TX:
+		val |= FIELD_PREP(LANE_ADP_CS_1_TARGET_WIDTH_ASYM_MASK,
+				  LANE_ADP_CS_1_TARGET_WIDTH_ASYM_TX);
+		break;
+	case TB_LINK_WIDTH_ASYM_RX:
+		val |= FIELD_PREP(LANE_ADP_CS_1_TARGET_WIDTH_ASYM_MASK,
+				  LANE_ADP_CS_1_TARGET_WIDTH_ASYM_RX);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return tb_port_write(port, &val, TB_CFG_PORT,
+			     port->cap_phy + LANE_ADP_CS_1, 1);
+}
+
+/**
+ * usb4_port_asym_start() - Start symmetry change and wait for completion
+ * @port: USB4 port
+ *
+ * Start symmetry change of the link to asymmetric or symmetric
+ * (according to what was previously set in tb_port_set_link_width().
+ * Wait for completion of the change.
+ *
+ * Returns %0 in case of success, %-ETIMEDOUT if case of timeout or
+ * a negative errno in case of a failure.
+ */
+int usb4_port_asym_start(struct tb_port *port)
+{
+	int ret;
+	u32 val;
+
+	ret = tb_port_read(port, &val, TB_CFG_PORT,
+			   port->cap_usb4 + PORT_CS_19, 1);
+	if (ret)
+		return ret;
+
+	val &= ~PORT_CS_19_START_ASYM;
+	val |= FIELD_PREP(PORT_CS_19_START_ASYM, 1);
+
+	ret = tb_port_write(port, &val, TB_CFG_PORT,
+			    port->cap_usb4 + PORT_CS_19, 1);
+	if (ret)
+		return ret;
+
+	/*
+	 * Wait for PORT_CS_19_START_ASYM to be 0. This means the USB4
+	 * port started the symmetry transition.
+	 */
+	ret = usb4_port_wait_for_bit(port, port->cap_usb4 + PORT_CS_19,
+				     PORT_CS_19_START_ASYM, 0, 1000);
+	if (ret)
+		return ret;
+
+	/* Then wait for the transtion to be completed */
+	return usb4_port_wait_for_bit(port, port->cap_usb4 + PORT_CS_18,
+				      PORT_CS_18_TIP, 0, 5000);
+}
+
 /**
 * usb4_port_margining_caps() - Read USB4 port marginig capabilities
 * @port: USB4 port
@ -1946,35 +2052,6 @@ int usb4_usb3_port_max_link_rate(struct tb_port *port)
 	return usb4_usb3_port_max_bandwidth(port, ret);
 }

-/**
- * usb4_usb3_port_actual_link_rate() - Established USB3 link rate
- * @port: USB3 adapter port
- *
- * Return actual established link rate of a USB3 adapter in Mb/s. If the
- * link is not up returns %0 and negative errno in case of failure.
- */
-int usb4_usb3_port_actual_link_rate(struct tb_port *port)
-{
-	int ret, lr;
-	u32 val;
-
-	if (!tb_port_is_usb3_down(port) && !tb_port_is_usb3_up(port))
-		return -EINVAL;
-
-	ret = tb_port_read(port, &val, TB_CFG_PORT,
-			   port->cap_adap + ADP_USB3_CS_4, 1);
-	if (ret)
-		return ret;
-
-	if (!(val & ADP_USB3_CS_4_ULV))
-		return 0;
-
-	lr = val & ADP_USB3_CS_4_ALR_MASK;
-	ret = lr == ADP_USB3_CS_4_ALR_20G ? 20000 : 10000;
-
-	return usb4_usb3_port_max_bandwidth(port, ret);
-}
-
 static int usb4_usb3_port_cm_request(struct tb_port *port, bool request)
 {
 	int ret;
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@ -91,6 +91,16 @@ config USB_PCI
 	  If you have such a device you may say N here and PCI related code
 	  will not be built in the USB driver.

+config USB_PCI_AMD
+	bool "AMD PCI USB host support"
+	depends on USB_PCI && HAS_IOPORT
+	default X86 || MACH_LOONGSON64 || PPC_PASEMI
+	help
+	  Enable workarounds for USB implementation quirks in SB600/SB700/SB800
+	  and later south bridge implementations. These are common on x86 PCs
+	  with AMD CPUs but rarely used elsewhere, with the exception of a few
+	  powerpc and mips desktop machines.
+
 if USB

 source "drivers/usb/core/Kconfig"
--- a/drivers/usb/c67x00/c67x00-hcd.h
+++ b/drivers/usb/c67x00/c67x00-hcd.h
@ -109,7 +109,6 @@ int c67x00_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status);
 void c67x00_endpoint_disable(struct usb_hcd *hcd,
 			     struct usb_host_endpoint *ep);

-void c67x00_hcd_msg_received(struct c67x00_sie *sie, u16 msg);
 void c67x00_sched_kick(struct c67x00_hcd *c67x00);
 int c67x00_sched_start_scheduler(struct c67x00_hcd *c67x00);
 void c67x00_sched_stop_scheduler(struct c67x00_hcd *c67x00);
--- a/drivers/usb/cdns3/cdnsp-debug.h
+++ b/drivers/usb/cdns3/cdnsp-debug.h
@ -131,8 +131,6 @@ static inline const char *cdnsp_trb_type_string(u8 type)
 		return "Endpoint Not ready";
 	case TRB_HALT_ENDPOINT:
 		return "Halt Endpoint";
-	case TRB_FLUSH_ENDPOINT:
-		return "FLush Endpoint";
 	default:
 		return "UNKNOWN";
 	}
@ -328,7 +326,6 @@ static inline const char *cdnsp_decode_trb(char *str, size_t size, u32 field0,
 		break;
 	case TRB_RESET_EP:
 	case TRB_HALT_ENDPOINT:
-	case TRB_FLUSH_ENDPOINT:
 		ret = snprintf(str, size,
 			       "%s: ep%d%s(%d) ctx %08x%08x slot %ld flags %c",
 			       cdnsp_trb_type_string(type),
--- a/drivers/usb/cdns3/cdnsp-gadget.c
+++ b/drivers/usb/cdns3/cdnsp-gadget.c
@ -1024,10 +1024,8 @@ static int cdnsp_gadget_ep_disable(struct usb_ep *ep)
 	pep->ep_state |= EP_DIS_IN_RROGRESS;

 	/* Endpoint was unconfigured by Reset Device command. */
-	if (!(pep->ep_state & EP_UNCONFIGURED)) {
+	if (!(pep->ep_state & EP_UNCONFIGURED))
 		cdnsp_cmd_stop_ep(pdev, pep);
-		cdnsp_cmd_flush_ep(pdev, pep);
-	}

 	/* Remove all queued USB requests. */
 	while (!list_empty(&pep->pending_list)) {
@ -1424,8 +1422,6 @@ static void cdnsp_stop(struct cdnsp_device *pdev)
 {
 	u32 temp;

-	cdnsp_cmd_flush_ep(pdev, &pdev->eps[0]);
-
 	/* Remove internally queued request for ep0. */
 	if (!list_empty(&pdev->eps[0].pending_list)) {
 		struct cdnsp_request *req;
--- a/drivers/usb/cdns3/cdnsp-gadget.h
+++ b/drivers/usb/cdns3/cdnsp-gadget.h
@ -1128,8 +1128,6 @@ union cdnsp_trb {
 #define TRB_HALT_ENDPOINT	54
 /* Doorbell Overflow Event. */
 #define TRB_DRB_OVERFLOW	57
-/* Flush Endpoint Command. */
-#define TRB_FLUSH_ENDPOINT	58

 #define TRB_TYPE_LINK(x)	(((x) & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK))
 #define TRB_TYPE_LINK_LE32(x)	(((x) & cpu_to_le32(TRB_TYPE_BITMASK)) == \
@ -1539,8 +1537,6 @@ void cdnsp_queue_configure_endpoint(struct cdnsp_device *pdev,
 void cdnsp_queue_reset_ep(struct cdnsp_device *pdev, unsigned int ep_index);
 void cdnsp_queue_halt_endpoint(struct cdnsp_device *pdev,
 			       unsigned int ep_index);
-void cdnsp_queue_flush_endpoint(struct cdnsp_device *pdev,
-				unsigned int ep_index);
 void cdnsp_force_header_wakeup(struct cdnsp_device *pdev, int intf_num);
 void cdnsp_queue_reset_device(struct cdnsp_device *pdev);
 void cdnsp_queue_new_dequeue_state(struct cdnsp_device *pdev,
@ -1574,7 +1570,6 @@ void cdnsp_irq_reset(struct cdnsp_device *pdev);
 int cdnsp_halt_endpoint(struct cdnsp_device *pdev,
 			struct cdnsp_ep *pep, int value);
 int cdnsp_cmd_stop_ep(struct cdnsp_device *pdev, struct cdnsp_ep *pep);
-int cdnsp_cmd_flush_ep(struct cdnsp_device *pdev, struct cdnsp_ep *pep);
 void cdnsp_setup_analyze(struct cdnsp_device *pdev);
 int cdnsp_status_stage(struct cdnsp_device *pdev);
 int cdnsp_reset_device(struct cdnsp_device *pdev);
--- a/drivers/usb/cdns3/cdnsp-ring.c
+++ b/drivers/usb/cdns3/cdnsp-ring.c
@ -2123,19 +2123,6 @@ int cdnsp_cmd_stop_ep(struct cdnsp_device *pdev, struct cdnsp_ep *pep)
 	return ret;
 }

-int cdnsp_cmd_flush_ep(struct cdnsp_device *pdev, struct cdnsp_ep *pep)
-{
-	int ret;
-
-	cdnsp_queue_flush_endpoint(pdev, pep->idx);
-	cdnsp_ring_cmd_db(pdev);
-	ret = cdnsp_wait_for_cmd_compl(pdev);
-
-	trace_cdnsp_handle_cmd_flush_ep(pep->out_ctx);
-
-	return ret;
-}
-
 /*
 * The transfer burst count field of the isochronous TRB defines the number of
 * bursts that are required to move all packets in this TD. Only SuperSpeed
@ -2465,17 +2452,6 @@ void cdnsp_queue_halt_endpoint(struct cdnsp_device *pdev, unsigned int ep_index)
 			    EP_ID_FOR_TRB(ep_index));
 }

-/*
- * Queue a flush endpoint request on the command ring.
- */
-void  cdnsp_queue_flush_endpoint(struct cdnsp_device *pdev,
-				 unsigned int ep_index)
-{
-	cdnsp_queue_command(pdev, 0, 0, 0, TRB_TYPE(TRB_FLUSH_ENDPOINT) |
-			    SLOT_ID_FOR_TRB(pdev->slot_id) |
-			    EP_ID_FOR_TRB(ep_index));
-}
-
 void cdnsp_force_header_wakeup(struct cdnsp_device *pdev, int intf_num)
 {
 	u32 lo, mid;
--- a/drivers/usb/chipidea/Kconfig
+++ b/drivers/usb/chipidea/Kconfig
@ -43,6 +43,10 @@ config USB_CHIPIDEA_MSM
 	tristate "Enable MSM hsusb glue driver" if EXPERT
 	default USB_CHIPIDEA

+config USB_CHIPIDEA_NPCM
+	tristate "Enable NPCM hsusb glue driver" if EXPERT
+	default USB_CHIPIDEA
+
 config USB_CHIPIDEA_IMX
 	tristate "Enable i.MX USB glue driver" if EXPERT
 	depends on OF
--- a/drivers/usb/chipidea/Makefile
+++ b/drivers/usb/chipidea/Makefile
@ -13,6 +13,7 @@ ci_hdrc-$(CONFIG_USB_OTG_FSM)		+= otg_fsm.o

 obj-$(CONFIG_USB_CHIPIDEA_GENERIC)	+= ci_hdrc_usb2.o
 obj-$(CONFIG_USB_CHIPIDEA_MSM)		+= ci_hdrc_msm.o
+obj-$(CONFIG_USB_CHIPIDEA_NPCM)		+= ci_hdrc_npcm.o
 obj-$(CONFIG_USB_CHIPIDEA_PCI)		+= ci_hdrc_pci.o
 obj-$(CONFIG_USB_CHIPIDEA_IMX)		+= usbmisc_imx.o ci_hdrc_imx.o
 obj-$(CONFIG_USB_CHIPIDEA_TEGRA)	+= ci_hdrc_tegra.o
--- a/drivers/usb/chipidea/ci_hdrc_npcm.c
+++ b/drivers/usb/chipidea/ci_hdrc_npcm.c
@ -0,0 +1,114 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2023 Nuvoton Technology corporation.
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/usb/chipidea.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/reset-controller.h>
+#include <linux/of.h>
+
+#include "ci.h"
+
+struct npcm_udc_data {
+	struct platform_device	*ci;
+	struct clk		*core_clk;
+	struct ci_hdrc_platform_data pdata;
+};
+
+static int npcm_udc_notify_event(struct ci_hdrc *ci, unsigned event)
+{
+	struct device *dev = ci->dev->parent;
+
+	switch (event) {
+	case CI_HDRC_CONTROLLER_RESET_EVENT:
+		/* clear all mode bits */
+		hw_write(ci, OP_USBMODE, 0xffffffff, 0x0);
+		break;
+	default:
+		dev_dbg(dev, "unknown ci_hdrc event (%d)\n",event);
+		break;
+	}
+
+	return 0;
+}
+
+static int npcm_udc_probe(struct platform_device *pdev)
+{
+	int ret;
+	struct npcm_udc_data *ci;
+	struct platform_device *plat_ci;
+	struct device *dev = &pdev->dev;
+
+	ci = devm_kzalloc(&pdev->dev, sizeof(*ci), GFP_KERNEL);
+	if (!ci)
+		return -ENOMEM;
+	platform_set_drvdata(pdev, ci);
+
+	ci->core_clk = devm_clk_get_optional(dev, NULL);
+	if (IS_ERR(ci->core_clk))
+		return PTR_ERR(ci->core_clk);
+
+	ret = clk_prepare_enable(ci->core_clk);
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to enable the clock: %d\n", ret);
+
+	ci->pdata.name = dev_name(dev);
+	ci->pdata.capoffset = DEF_CAPOFFSET;
+	ci->pdata.flags	= CI_HDRC_REQUIRES_ALIGNED_DMA |
+		CI_HDRC_FORCE_VBUS_ACTIVE_ALWAYS;
+	ci->pdata.phy_mode = USBPHY_INTERFACE_MODE_UTMI;
+	ci->pdata.notify_event = npcm_udc_notify_event;
+
+	plat_ci = ci_hdrc_add_device(dev, pdev->resource, pdev->num_resources,
+				     &ci->pdata);
+	if (IS_ERR(plat_ci)) {
+		ret = PTR_ERR(plat_ci);
+		dev_err(dev, "failed to register HDRC NPCM device: %d\n", ret);
+		goto clk_err;
+	}
+
+	pm_runtime_no_callbacks(dev);
+	pm_runtime_enable(dev);
+
+	return 0;
+
+clk_err:
+	clk_disable_unprepare(ci->core_clk);
+	return ret;
+}
+
+static int npcm_udc_remove(struct platform_device *pdev)
+{
+	struct npcm_udc_data *ci = platform_get_drvdata(pdev);
+
+	pm_runtime_disable(&pdev->dev);
+	ci_hdrc_remove_device(ci->ci);
+	clk_disable_unprepare(ci->core_clk);
+
+	return 0;
+}
+
+static const struct of_device_id npcm_udc_dt_match[] = {
+	{ .compatible = "nuvoton,npcm750-udc", },
+	{ .compatible = "nuvoton,npcm845-udc", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, npcm_udc_dt_match);
+
+static struct platform_driver npcm_udc_driver = {
+	.probe = npcm_udc_probe,
+	.remove = npcm_udc_remove,
+	.driver = {
+		.name = "npcm_udc",
+		.of_match_table = npcm_udc_dt_match,
+	},
+};
+
+module_platform_driver(npcm_udc_driver);
+
+MODULE_DESCRIPTION("NPCM USB device controller driver");
+MODULE_AUTHOR("Tomer Maimon <tomer.maimon@nuvoton.com>");
+MODULE_LICENSE("GPL v2");
--- a/drivers/usb/chipidea/ci_hdrc_tegra.c
+++ b/drivers/usb/chipidea/ci_hdrc_tegra.c
@ -293,14 +293,12 @@ static int tegra_usb_probe(struct platform_device *pdev)
 	usb->phy = devm_usb_get_phy_by_phandle(&pdev->dev, "nvidia,phy", 0);
 	if (IS_ERR(usb->phy))
 		return dev_err_probe(&pdev->dev, PTR_ERR(usb->phy),
-				     "failed to get PHY\n");
+				     "failed to get PHY");

 	usb->clk = devm_clk_get(&pdev->dev, NULL);
-	if (IS_ERR(usb->clk)) {
-		err = PTR_ERR(usb->clk);
-		dev_err(&pdev->dev, "failed to get clock: %d\n", err);
-		return err;
-	}
+	if (IS_ERR(usb->clk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(usb->clk),
+				     "failed to get clock");

 	err = devm_tegra_core_dev_init_opp_table_common(&pdev->dev);
 	if (err)
@ -316,7 +314,7 @@ static int tegra_usb_probe(struct platform_device *pdev)

 	err = tegra_usb_reset_controller(&pdev->dev);
 	if (err) {
-		dev_err(&pdev->dev, "failed to reset controller: %d\n", err);
+		dev_err_probe(&pdev->dev, err, "failed to reset controller");
 		goto fail_power_off;
 	}

@ -347,8 +345,8 @@ static int tegra_usb_probe(struct platform_device *pdev)
 	usb->dev = ci_hdrc_add_device(&pdev->dev, pdev->resource,
 				      pdev->num_resources, &usb->data);
 	if (IS_ERR(usb->dev)) {
-		err = PTR_ERR(usb->dev);
-		dev_err(&pdev->dev, "failed to add HDRC device: %d\n", err);
+		err = dev_err_probe(&pdev->dev, PTR_ERR(usb->dev),
+				    "failed to add HDRC device");
 		goto phy_shutdown;
 	}

--- a/drivers/usb/chipidea/ci_hdrc_usb2.c
+++ b/drivers/usb/chipidea/ci_hdrc_usb2.c
@ -9,9 +9,9 @@
 #include <linux/dma-mapping.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <linux/of_platform.h>
 #include <linux/phy/phy.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/usb/chipidea.h>
 #include <linux/usb/hcd.h>
 #include <linux/usb/ulpi.h>
@ -51,8 +51,8 @@ static int ci_hdrc_usb2_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct ci_hdrc_usb2_priv *priv;
 	struct ci_hdrc_platform_data *ci_pdata = dev_get_platdata(dev);
+	const struct ci_hdrc_platform_data *data;
 	int ret;
-	const struct of_device_id *match;

 	if (!ci_pdata) {
 		ci_pdata = devm_kmalloc(dev, sizeof(*ci_pdata), GFP_KERNEL);
@ -61,11 +61,10 @@ static int ci_hdrc_usb2_probe(struct platform_device *pdev)
 		*ci_pdata = ci_default_pdata;	/* struct copy */
 	}

-	match = of_match_device(ci_hdrc_usb2_of_match, &pdev->dev);
-	if (match && match->data) {
+	data = device_get_match_data(&pdev->dev);
+	if (data)
 		/* struct copy */
-		*ci_pdata = *(struct ci_hdrc_platform_data *)match->data;
-	}
+		*ci_pdata = *data;

 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
@ -120,7 +119,7 @@ static struct platform_driver ci_hdrc_usb2_driver = {
 	.remove_new = ci_hdrc_usb2_remove,
 	.driver	= {
 		.name		= "chipidea-usb2",
-		.of_match_table	= of_match_ptr(ci_hdrc_usb2_of_match),
+		.of_match_table	= ci_hdrc_usb2_of_match,
 	},
 };
 module_platform_driver(ci_hdrc_usb2_driver);
--- a/drivers/usb/chipidea/host.c
+++ b/drivers/usb/chipidea/host.c
@ -30,8 +30,7 @@ struct ehci_ci_priv {
 };

 struct ci_hdrc_dma_aligned_buffer {
-	void *kmalloc_ptr;
-	void *old_xfer_buffer;
+	void *original_buffer;
 	u8 data[];
 };

@ -380,59 +379,52 @@ static int ci_ehci_bus_suspend(struct usb_hcd *hcd)
 	return 0;
 }

-static void ci_hdrc_free_dma_aligned_buffer(struct urb *urb)
+static void ci_hdrc_free_dma_aligned_buffer(struct urb *urb, bool copy_back)
 {
 	struct ci_hdrc_dma_aligned_buffer *temp;
-	size_t length;

 	if (!(urb->transfer_flags & URB_ALIGNED_TEMP_BUFFER))
 		return;
+	urb->transfer_flags &= ~URB_ALIGNED_TEMP_BUFFER;

 	temp = container_of(urb->transfer_buffer,
 			    struct ci_hdrc_dma_aligned_buffer, data);
+	urb->transfer_buffer = temp->original_buffer;
+
+	if (copy_back && usb_urb_dir_in(urb)) {
+		size_t length;

-	if (usb_urb_dir_in(urb)) {
 		if (usb_pipeisoc(urb->pipe))
 			length = urb->transfer_buffer_length;
 		else
 			length = urb->actual_length;

-		memcpy(temp->old_xfer_buffer, temp->data, length);
+		memcpy(temp->original_buffer, temp->data, length);
 	}
-	urb->transfer_buffer = temp->old_xfer_buffer;
-	kfree(temp->kmalloc_ptr);

-	urb->transfer_flags &= ~URB_ALIGNED_TEMP_BUFFER;
+	kfree(temp);
 }

 static int ci_hdrc_alloc_dma_aligned_buffer(struct urb *urb, gfp_t mem_flags)
 {
-	struct ci_hdrc_dma_aligned_buffer *temp, *kmalloc_ptr;
-	const unsigned int ci_hdrc_usb_dma_align = 32;
-	size_t kmalloc_size;
+	struct ci_hdrc_dma_aligned_buffer *temp;

-	if (urb->num_sgs || urb->sg || urb->transfer_buffer_length == 0 ||
-	    !((uintptr_t)urb->transfer_buffer & (ci_hdrc_usb_dma_align - 1)))
+	if (urb->num_sgs || urb->sg || urb->transfer_buffer_length == 0)
+		return 0;
+	if (IS_ALIGNED((uintptr_t)urb->transfer_buffer, 4)
+	    && IS_ALIGNED(urb->transfer_buffer_length, 4))
 		return 0;

-	/* Allocate a buffer with enough padding for alignment */
-	kmalloc_size = urb->transfer_buffer_length +
-		       sizeof(struct ci_hdrc_dma_aligned_buffer) +
-		       ci_hdrc_usb_dma_align - 1;
-
-	kmalloc_ptr = kmalloc(kmalloc_size, mem_flags);
-	if (!kmalloc_ptr)
+	temp = kmalloc(sizeof(*temp) + ALIGN(urb->transfer_buffer_length, 4), mem_flags);
+	if (!temp)
 		return -ENOMEM;

-	/* Position our struct dma_aligned_buffer such that data is aligned */
-	temp = PTR_ALIGN(kmalloc_ptr + 1, ci_hdrc_usb_dma_align) - 1;
-	temp->kmalloc_ptr = kmalloc_ptr;
-	temp->old_xfer_buffer = urb->transfer_buffer;
 	if (usb_urb_dir_out(urb))
 		memcpy(temp->data, urb->transfer_buffer,
 		       urb->transfer_buffer_length);
-	urb->transfer_buffer = temp->data;

+	temp->original_buffer = urb->transfer_buffer;
+	urb->transfer_buffer = temp->data;
 	urb->transfer_flags |= URB_ALIGNED_TEMP_BUFFER;

 	return 0;
@ -449,7 +441,7 @@ static int ci_hdrc_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,

 	ret = usb_hcd_map_urb_for_dma(hcd, urb, mem_flags);
 	if (ret)
-		ci_hdrc_free_dma_aligned_buffer(urb);
+		ci_hdrc_free_dma_aligned_buffer(urb, false);

 	return ret;
 }
@ -457,7 +449,7 @@ static int ci_hdrc_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
 static void ci_hdrc_unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb)
 {
 	usb_hcd_unmap_urb_for_dma(hcd, urb);
-	ci_hdrc_free_dma_aligned_buffer(urb);
+	ci_hdrc_free_dma_aligned_buffer(urb, true);
 }

 #ifdef CONFIG_PM_SLEEP
--- a/drivers/usb/chipidea/otg.c
+++ b/drivers/usb/chipidea/otg.c
@ -130,8 +130,11 @@ enum ci_role ci_otg_role(struct ci_hdrc *ci)

 void ci_handle_vbus_change(struct ci_hdrc *ci)
 {
-	if (!ci->is_otg)
+	if (!ci->is_otg) {
+		if (ci->platdata->flags & CI_HDRC_FORCE_VBUS_ACTIVE_ALWAYS)
+			usb_gadget_vbus_connect(&ci->gadget);
 		return;
+	}

 	if (hw_read_otgsc(ci, OTGSC_BSV) && !ci->vbus_active)
 		usb_gadget_vbus_connect(&ci->gadget);
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@ -206,8 +206,7 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct hc_driver *driver)
 		goto free_irq_vectors;
 	}

-	hcd->amd_resume_bug = (usb_hcd_amd_remote_wakeup_quirk(dev) &&
-			driver->flags & (HCD_USB11 | HCD_USB3)) ? 1 : 0;
+	hcd->amd_resume_bug = usb_hcd_amd_resume_bug(dev, driver);

 	if (driver->flags & HCD_MEMORY) {
 		/* EHCI, OHCI */
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@ -2274,6 +2274,8 @@ void usb_disconnect(struct usb_device **pdev)
 		 */
 		if (!test_and_set_bit(port1, hub->child_usage_bits))
 			pm_runtime_get_sync(&port_dev->dev);
+
+		typec_deattach(port_dev->connector, &udev->dev);
 	}

 	usb_remove_ep_devs(&udev->ep0);
@ -2620,6 +2622,8 @@ int usb_new_device(struct usb_device *udev)

 		if (!test_and_set_bit(port1, hub->child_usage_bits))
 			pm_runtime_get_sync(&port_dev->dev);
+
+		typec_attach(port_dev->connector, &udev->dev);
 	}

 	(void) usb_create_ep_devs(&udev->dev, &udev->ep0, udev);
--- a/drivers/usb/core/hub.h
+++ b/drivers/usb/core/hub.h
@ -14,6 +14,7 @@
 #include <linux/usb.h>
 #include <linux/usb/ch11.h>
 #include <linux/usb/hcd.h>
+#include <linux/usb/typec.h>
 #include "usb.h"

 struct usb_hub {
@ -82,6 +83,7 @@ struct usb_hub {
 * @dev: generic device interface
 * @port_owner: port's owner
 * @peer: related usb2 and usb3 ports (share the same connector)
+ * @connector: USB Type-C connector
 * @req: default pm qos request for hubs without port power control
 * @connect_type: port's connect type
 * @state: device state of the usb device attached to the port
@ -100,6 +102,7 @@ struct usb_port {
 	struct device dev;
 	struct usb_dev_state *port_owner;
 	struct usb_port *peer;
+	struct typec_connector *connector;
 	struct dev_pm_qos_request *req;
 	enum usb_port_connect_type connect_type;
 	enum usb_device_state state;
--- a/drivers/usb/core/port.c
+++ b/drivers/usb/core/port.c
@ -653,6 +653,7 @@ static void find_and_link_peer(struct usb_hub *hub, int port1)

 static int connector_bind(struct device *dev, struct device *connector, void *data)
 {
+	struct usb_port *port_dev = to_usb_port(dev);
 	int ret;

 	ret = sysfs_create_link(&dev->kobj, &connector->kobj, "connector");
@ -660,16 +661,30 @@ static int connector_bind(struct device *dev, struct device *connector, void *da
 		return ret;

 	ret = sysfs_create_link(&connector->kobj, &dev->kobj, dev_name(dev));
-	if (ret)
+	if (ret) {
 		sysfs_remove_link(&dev->kobj, "connector");
+		return ret;
+	}

-	return ret;
+	port_dev->connector = data;
+
+	/*
+	 * If there is already USB device connected to the port, letting the
+	 * Type-C connector know about it immediately.
+	 */
+	if (port_dev->child)
+		typec_attach(port_dev->connector, &port_dev->child->dev);
+
+	return 0;
 }

 static void connector_unbind(struct device *dev, struct device *connector, void *data)
 {
+	struct usb_port *port_dev = to_usb_port(dev);
+
 	sysfs_remove_link(&connector->kobj, dev_name(dev));
 	sysfs_remove_link(&dev->kobj, "connector");
+	port_dev->connector = NULL;
 }

 static const struct component_ops connector_ops = {
@ -698,6 +713,7 @@ int usb_hub_create_port_device(struct usb_hub *hub, int port1)
 	set_bit(port1, hub->power_bits);
 	port_dev->dev.parent = hub->intfdev;
 	if (hub_is_superspeed(hdev)) {
+		port_dev->is_superspeed = 1;
 		port_dev->usb3_lpm_u1_permit = 1;
 		port_dev->usb3_lpm_u2_permit = 1;
 		port_dev->dev.groups = port_dev_usb3_group;
@ -705,8 +721,6 @@ int usb_hub_create_port_device(struct usb_hub *hub, int port1)
 		port_dev->dev.groups = port_dev_group;
 	port_dev->dev.type = &usb_port_device_type;
 	port_dev->dev.driver = &usb_port_driver;
-	if (hub_is_superspeed(hub->hdev))
-		port_dev->is_superspeed = 1;
 	dev_set_name(&port_dev->dev, "%s-port%d", dev_name(&hub->hdev->dev),
 			port1);
 	mutex_init(&port_dev->status_lock);
--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@ -4769,8 +4769,8 @@ static int _dwc2_hcd_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
 	if (qh_allocated && qh->channel && qh->channel->qh == qh)
 		qh->channel->qh = NULL;
 fail2:
-	spin_unlock_irqrestore(&hsotg->lock, flags);
 	urb->hcpriv = NULL;
+	spin_unlock_irqrestore(&hsotg->lock, flags);
 	kfree(qtd);
 fail1:
 	if (qh_allocated) {
--- a/drivers/usb/dwc2/params.c
+++ b/drivers/usb/dwc2/params.c
@ -5,7 +5,7 @@

 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
 #include <linux/usb/of.h>
 #include <linux/pci_ids.h>
 #include <linux/pci.h>
@ -968,26 +968,17 @@ typedef void (*set_params_cb)(struct dwc2_hsotg *data);

 int dwc2_init_params(struct dwc2_hsotg *hsotg)
 {
-	const struct of_device_id *match;
 	set_params_cb set_params;

 	dwc2_set_default_params(hsotg);
 	dwc2_get_device_properties(hsotg);

-	match = of_match_device(dwc2_of_match_table, hsotg->dev);
-	if (match && match->data) {
-		set_params = match->data;
+	set_params = device_get_match_data(hsotg->dev);
+	if (set_params) {
 		set_params(hsotg);
-	} else if (!match) {
-		const struct acpi_device_id *amatch;
-		const struct pci_device_id *pmatch = NULL;
-
-		amatch = acpi_match_device(dwc2_acpi_match, hsotg->dev);
-		if (amatch && amatch->driver_data) {
-			set_params = (set_params_cb)amatch->driver_data;
-			set_params(hsotg);
-		} else if (!amatch)
-			pmatch = pci_match_id(dwc2_pci_ids, to_pci_dev(hsotg->dev->parent));
+	} else {
+		const struct pci_device_id *pmatch =
+			pci_match_id(dwc2_pci_ids, to_pci_dev(hsotg->dev->parent));

 		if (pmatch && pmatch->driver_data) {
 			set_params = (set_params_cb)pmatch->driver_data;
--- a/drivers/usb/dwc3/Kconfig
+++ b/drivers/usb/dwc3/Kconfig
@ -178,4 +178,15 @@ config USB_DWC3_OCTEON
 	  Only the host mode is currently supported.
 	  Say 'Y' or 'M' here if you have one such device.

+config USB_DWC3_RTK
+	tristate "Realtek DWC3 Platform Driver"
+	depends on OF && ARCH_REALTEK
+	default USB_DWC3
+	select USB_ROLE_SWITCH
+	help
+	  RTK DHC RTD SoCs with DesignWare Core USB3 IP inside,
+	  and IP Core configured for USB 2.0 and USB 3.0 in host
+	  or dual-role mode.
+	  Say 'Y' or 'M' if you have such device.
+
 endif
--- a/drivers/usb/dwc3/Makefile
+++ b/drivers/usb/dwc3/Makefile
@ -55,3 +55,4 @@ obj-$(CONFIG_USB_DWC3_QCOM)		+= dwc3-qcom.o
 obj-$(CONFIG_USB_DWC3_IMX8MP)		+= dwc3-imx8mp.o
 obj-$(CONFIG_USB_DWC3_XILINX)		+= dwc3-xilinx.o
 obj-$(CONFIG_USB_DWC3_OCTEON)		+= dwc3-octeon.o
+obj-$(CONFIG_USB_DWC3_RTK)		+= dwc3-rtk.o
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@ -854,8 +854,20 @@ static int dwc3_clk_enable(struct dwc3 *dwc)
 	if (ret)
 		goto disable_ref_clk;

+	ret = clk_prepare_enable(dwc->utmi_clk);
+	if (ret)
+		goto disable_susp_clk;
+
+	ret = clk_prepare_enable(dwc->pipe_clk);
+	if (ret)
+		goto disable_utmi_clk;
+
 	return 0;

+disable_utmi_clk:
+	clk_disable_unprepare(dwc->utmi_clk);
+disable_susp_clk:
+	clk_disable_unprepare(dwc->susp_clk);
 disable_ref_clk:
 	clk_disable_unprepare(dwc->ref_clk);
 disable_bus_clk:
@ -865,6 +877,8 @@ static int dwc3_clk_enable(struct dwc3 *dwc)

 static void dwc3_clk_disable(struct dwc3 *dwc)
 {
+	clk_disable_unprepare(dwc->pipe_clk);
+	clk_disable_unprepare(dwc->utmi_clk);
 	clk_disable_unprepare(dwc->susp_clk);
 	clk_disable_unprepare(dwc->ref_clk);
 	clk_disable_unprepare(dwc->bus_clk);
@ -1094,6 +1108,111 @@ static void dwc3_set_power_down_clk_scale(struct dwc3 *dwc)
 	}
 }

+static void dwc3_config_threshold(struct dwc3 *dwc)
+{
+	u32 reg;
+	u8 rx_thr_num;
+	u8 rx_maxburst;
+	u8 tx_thr_num;
+	u8 tx_maxburst;
+
+	/*
+	 * Must config both number of packets and max burst settings to enable
+	 * RX and/or TX threshold.
+	 */
+	if (!DWC3_IP_IS(DWC3) && dwc->dr_mode == USB_DR_MODE_HOST) {
+		rx_thr_num = dwc->rx_thr_num_pkt_prd;
+		rx_maxburst = dwc->rx_max_burst_prd;
+		tx_thr_num = dwc->tx_thr_num_pkt_prd;
+		tx_maxburst = dwc->tx_max_burst_prd;
+
+		if (rx_thr_num && rx_maxburst) {
+			reg = dwc3_readl(dwc->regs, DWC3_GRXTHRCFG);
+			reg |= DWC31_RXTHRNUMPKTSEL_PRD;
+
+			reg &= ~DWC31_RXTHRNUMPKT_PRD(~0);
+			reg |= DWC31_RXTHRNUMPKT_PRD(rx_thr_num);
+
+			reg &= ~DWC31_MAXRXBURSTSIZE_PRD(~0);
+			reg |= DWC31_MAXRXBURSTSIZE_PRD(rx_maxburst);
+
+			dwc3_writel(dwc->regs, DWC3_GRXTHRCFG, reg);
+		}
+
+		if (tx_thr_num && tx_maxburst) {
+			reg = dwc3_readl(dwc->regs, DWC3_GTXTHRCFG);
+			reg |= DWC31_TXTHRNUMPKTSEL_PRD;
+
+			reg &= ~DWC31_TXTHRNUMPKT_PRD(~0);
+			reg |= DWC31_TXTHRNUMPKT_PRD(tx_thr_num);
+
+			reg &= ~DWC31_MAXTXBURSTSIZE_PRD(~0);
+			reg |= DWC31_MAXTXBURSTSIZE_PRD(tx_maxburst);
+
+			dwc3_writel(dwc->regs, DWC3_GTXTHRCFG, reg);
+		}
+	}
+
+	rx_thr_num = dwc->rx_thr_num_pkt;
+	rx_maxburst = dwc->rx_max_burst;
+	tx_thr_num = dwc->tx_thr_num_pkt;
+	tx_maxburst = dwc->tx_max_burst;
+
+	if (DWC3_IP_IS(DWC3)) {
+		if (rx_thr_num && rx_maxburst) {
+			reg = dwc3_readl(dwc->regs, DWC3_GRXTHRCFG);
+			reg |= DWC3_GRXTHRCFG_PKTCNTSEL;
+
+			reg &= ~DWC3_GRXTHRCFG_RXPKTCNT(~0);
+			reg |= DWC3_GRXTHRCFG_RXPKTCNT(rx_thr_num);
+
+			reg &= ~DWC3_GRXTHRCFG_MAXRXBURSTSIZE(~0);
+			reg |= DWC3_GRXTHRCFG_MAXRXBURSTSIZE(rx_maxburst);
+
+			dwc3_writel(dwc->regs, DWC3_GRXTHRCFG, reg);
+		}
+
+		if (tx_thr_num && tx_maxburst) {
+			reg = dwc3_readl(dwc->regs, DWC3_GTXTHRCFG);
+			reg |= DWC3_GTXTHRCFG_PKTCNTSEL;
+
+			reg &= ~DWC3_GTXTHRCFG_TXPKTCNT(~0);
+			reg |= DWC3_GTXTHRCFG_TXPKTCNT(tx_thr_num);
+
+			reg &= ~DWC3_GTXTHRCFG_MAXTXBURSTSIZE(~0);
+			reg |= DWC3_GTXTHRCFG_MAXTXBURSTSIZE(tx_maxburst);
+
+			dwc3_writel(dwc->regs, DWC3_GTXTHRCFG, reg);
+		}
+	} else {
+		if (rx_thr_num && rx_maxburst) {
+			reg = dwc3_readl(dwc->regs, DWC3_GRXTHRCFG);
+			reg |= DWC31_GRXTHRCFG_PKTCNTSEL;
+
+			reg &= ~DWC31_GRXTHRCFG_RXPKTCNT(~0);
+			reg |= DWC31_GRXTHRCFG_RXPKTCNT(rx_thr_num);
+
+			reg &= ~DWC31_GRXTHRCFG_MAXRXBURSTSIZE(~0);
+			reg |= DWC31_GRXTHRCFG_MAXRXBURSTSIZE(rx_maxburst);
+
+			dwc3_writel(dwc->regs, DWC3_GRXTHRCFG, reg);
+		}
+
+		if (tx_thr_num && tx_maxburst) {
+			reg = dwc3_readl(dwc->regs, DWC3_GTXTHRCFG);
+			reg |= DWC31_GTXTHRCFG_PKTCNTSEL;
+
+			reg &= ~DWC31_GTXTHRCFG_TXPKTCNT(~0);
+			reg |= DWC31_GTXTHRCFG_TXPKTCNT(tx_thr_num);
+
+			reg &= ~DWC31_GTXTHRCFG_MAXTXBURSTSIZE(~0);
+			reg |= DWC31_GTXTHRCFG_MAXTXBURSTSIZE(tx_maxburst);
+
+			dwc3_writel(dwc->regs, DWC3_GTXTHRCFG, reg);
+		}
+	}
+}
+
 /**
 * dwc3_core_init - Low-level initialization of DWC3 Core
 * @dwc: Pointer to our controller context structure
@ -1246,42 +1365,7 @@ static int dwc3_core_init(struct dwc3 *dwc)
 		dwc3_writel(dwc->regs, DWC3_GUCTL1, reg);
 	}

-	/*
-	 * Must config both number of packets and max burst settings to enable
-	 * RX and/or TX threshold.
-	 */
-	if (!DWC3_IP_IS(DWC3) && dwc->dr_mode == USB_DR_MODE_HOST) {
-		u8 rx_thr_num = dwc->rx_thr_num_pkt_prd;
-		u8 rx_maxburst = dwc->rx_max_burst_prd;
-		u8 tx_thr_num = dwc->tx_thr_num_pkt_prd;
-		u8 tx_maxburst = dwc->tx_max_burst_prd;
-
-		if (rx_thr_num && rx_maxburst) {
-			reg = dwc3_readl(dwc->regs, DWC3_GRXTHRCFG);
-			reg |= DWC31_RXTHRNUMPKTSEL_PRD;
-
-			reg &= ~DWC31_RXTHRNUMPKT_PRD(~0);
-			reg |= DWC31_RXTHRNUMPKT_PRD(rx_thr_num);
-
-			reg &= ~DWC31_MAXRXBURSTSIZE_PRD(~0);
-			reg |= DWC31_MAXRXBURSTSIZE_PRD(rx_maxburst);
-
-			dwc3_writel(dwc->regs, DWC3_GRXTHRCFG, reg);
-		}
-
-		if (tx_thr_num && tx_maxburst) {
-			reg = dwc3_readl(dwc->regs, DWC3_GTXTHRCFG);
-			reg |= DWC31_TXTHRNUMPKTSEL_PRD;
-
-			reg &= ~DWC31_TXTHRNUMPKT_PRD(~0);
-			reg |= DWC31_TXTHRNUMPKT_PRD(tx_thr_num);
-
-			reg &= ~DWC31_MAXTXBURSTSIZE_PRD(~0);
-			reg |= DWC31_MAXTXBURSTSIZE_PRD(tx_maxburst);
-
-			dwc3_writel(dwc->regs, DWC3_GTXTHRCFG, reg);
-		}
-	}
+	dwc3_config_threshold(dwc);

 	return 0;

@ -1417,6 +1501,10 @@ static void dwc3_get_properties(struct dwc3 *dwc)
 	u8			lpm_nyet_threshold;
 	u8			tx_de_emphasis;
 	u8			hird_threshold;
+	u8			rx_thr_num_pkt = 0;
+	u8			rx_max_burst = 0;
+	u8			tx_thr_num_pkt = 0;
+	u8			tx_max_burst = 0;
 	u8			rx_thr_num_pkt_prd = 0;
 	u8			rx_max_burst_prd = 0;
 	u8			tx_thr_num_pkt_prd = 0;
@ -1479,6 +1567,14 @@ static void dwc3_get_properties(struct dwc3 *dwc)
 				"snps,usb2-lpm-disable");
 	dwc->usb2_gadget_lpm_disable = device_property_read_bool(dev,
 				"snps,usb2-gadget-lpm-disable");
+	device_property_read_u8(dev, "snps,rx-thr-num-pkt",
+				&rx_thr_num_pkt);
+	device_property_read_u8(dev, "snps,rx-max-burst",
+				&rx_max_burst);
+	device_property_read_u8(dev, "snps,tx-thr-num-pkt",
+				&tx_thr_num_pkt);
+	device_property_read_u8(dev, "snps,tx-max-burst",
+				&tx_max_burst);
 	device_property_read_u8(dev, "snps,rx-thr-num-pkt-prd",
 				&rx_thr_num_pkt_prd);
 	device_property_read_u8(dev, "snps,rx-max-burst-prd",
@ -1560,6 +1656,12 @@ static void dwc3_get_properties(struct dwc3 *dwc)

 	dwc->hird_threshold = hird_threshold;

+	dwc->rx_thr_num_pkt = rx_thr_num_pkt;
+	dwc->rx_max_burst = rx_max_burst;
+
+	dwc->tx_thr_num_pkt = tx_thr_num_pkt;
+	dwc->tx_max_burst = tx_max_burst;
+
 	dwc->rx_thr_num_pkt_prd = rx_thr_num_pkt_prd;
 	dwc->rx_max_burst_prd = rx_max_burst_prd;

@ -1785,6 +1887,20 @@ static int dwc3_get_clocks(struct dwc3 *dwc)
 		}
 	}

+	/* specific to Rockchip RK3588 */
+	dwc->utmi_clk = devm_clk_get_optional(dev, "utmi");
+	if (IS_ERR(dwc->utmi_clk)) {
+		return dev_err_probe(dev, PTR_ERR(dwc->utmi_clk),
+				"could not get utmi clock\n");
+	}
+
+	/* specific to Rockchip RK3588 */
+	dwc->pipe_clk = devm_clk_get_optional(dev, "pipe");
+	if (IS_ERR(dwc->pipe_clk)) {
+		return dev_err_probe(dev, PTR_ERR(dwc->pipe_clk),
+				"could not get pipe clock\n");
+	}
+
 	return 0;
 }

--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@ -211,6 +211,11 @@
 #define DWC3_GRXTHRCFG_RXPKTCNT(n) (((n) & 0xf) << 24)
 #define DWC3_GRXTHRCFG_PKTCNTSEL BIT(29)

+/* Global TX Threshold Configuration Register */
+#define DWC3_GTXTHRCFG_MAXTXBURSTSIZE(n) (((n) & 0xff) << 16)
+#define DWC3_GTXTHRCFG_TXPKTCNT(n) (((n) & 0xf) << 24)
+#define DWC3_GTXTHRCFG_PKTCNTSEL BIT(29)
+
 /* Global RX Threshold Configuration Register for DWC_usb31 only */
 #define DWC31_GRXTHRCFG_MAXRXBURSTSIZE(n)	(((n) & 0x1f) << 16)
 #define DWC31_GRXTHRCFG_RXPKTCNT(n)		(((n) & 0x1f) << 21)
@ -991,6 +996,8 @@ struct dwc3_scratchpad_array {
 * @bus_clk: clock for accessing the registers
 * @ref_clk: reference clock
 * @susp_clk: clock used when the SS phy is in low power (S3) state
+ * @utmi_clk: clock used for USB2 PHY communication
+ * @pipe_clk: clock used for USB3 PHY communication
 * @reset: reset control
 * @regs: base address for our registers
 * @regs_size: address space size
@ -1045,6 +1052,10 @@ struct dwc3_scratchpad_array {
 * @test_mode_nr: test feature selector
 * @lpm_nyet_threshold: LPM NYET response threshold
 * @hird_threshold: HIRD threshold
+ * @rx_thr_num_pkt: USB receive packet count
+ * @rx_max_burst: max USB receive burst size
+ * @tx_thr_num_pkt: USB transmit packet count
+ * @tx_max_burst: max USB transmit burst size
 * @rx_thr_num_pkt_prd: periodic ESS receive packet count
 * @rx_max_burst_prd: max periodic ESS receive burst size
 * @tx_thr_num_pkt_prd: periodic ESS transmit packet count
@ -1106,6 +1117,8 @@ struct dwc3_scratchpad_array {
 *			instances in park mode.
 * @parkmode_disable_hs_quirk: set if we need to disable all HishSpeed
 *			instances in park mode.
+ * @gfladj_refclk_lpm_sel: set if we need to enable SOF/ITP counter
+ *                          running based on ref_clk
 * @tx_de_emphasis_quirk: set if we enable Tx de-emphasis quirk
 * @tx_de_emphasis: Tx de-emphasis value
 *	0	- -6dB de-emphasis
@ -1156,6 +1169,8 @@ struct dwc3 {
 	struct clk		*bus_clk;
 	struct clk		*ref_clk;
 	struct clk		*susp_clk;
+	struct clk		*utmi_clk;
+	struct clk		*pipe_clk;

 	struct reset_control	*reset;

@ -1273,6 +1288,10 @@ struct dwc3 {
 	u8			test_mode_nr;
 	u8			lpm_nyet_threshold;
 	u8			hird_threshold;
+	u8			rx_thr_num_pkt;
+	u8			rx_max_burst;
+	u8			tx_thr_num_pkt;
+	u8			tx_max_burst;
 	u8			rx_thr_num_pkt_prd;
 	u8			rx_max_burst_prd;
 	u8			tx_thr_num_pkt_prd;
--- a/drivers/usb/dwc3/dwc3-rtk.c
+++ b/drivers/usb/dwc3/dwc3-rtk.c
@ -0,0 +1,475 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * dwc3-rtk.c - Realtek DWC3 Specific Glue layer
+ *
+ * Copyright (C) 2023 Realtek Semiconductor Corporation
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/suspend.h>
+#include <linux/sys_soc.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/of.h>
+#include <linux/usb/role.h>
+
+#include "core.h"
+
+#define WRAP_CTR_REG  0x0
+#define DISABLE_MULTI_REQ BIT(1)
+#define DESC_R2W_MULTI_DISABLE BIT(9)
+#define FORCE_PIPE3_PHY_STATUS_TO_0 BIT(13)
+
+#define WRAP_USB2_PHY_UTMI_REG 0x8
+#define TXHSVM_EN BIT(3)
+
+#define WRAP_PHY_PIPE_REG 0xC
+#define RESET_DISABLE_PIPE3_P0 BIT(0)
+#define CLOCK_ENABLE_FOR_PIPE3_PCLK BIT(1)
+
+#define WRAP_USB_HMAC_CTR0_REG 0x60
+#define U3PORT_DIS BIT(8)
+
+#define WRAP_USB2_PHY_REG  0x70
+#define USB2_PHY_EN_PHY_PLL_PORT0 BIT(12)
+#define USB2_PHY_EN_PHY_PLL_PORT1 BIT(13)
+#define USB2_PHY_SWITCH_MASK 0x707
+#define USB2_PHY_SWITCH_DEVICE 0x0
+#define USB2_PHY_SWITCH_HOST 0x606
+
+#define WRAP_APHY_REG 0x128
+#define USB3_MBIAS_ENABLE BIT(1)
+
+/* pm control */
+#define WRAP_USB_DBUS_PWR_CTRL_REG 0x160
+#define USB_DBUS_PWR_CTRL_REG 0x0
+#define DBUS_PWR_CTRL_EN BIT(0)
+
+struct dwc3_rtk {
+	struct device *dev;
+	void __iomem *regs;
+	size_t regs_size;
+	void __iomem *pm_base;
+
+	struct dwc3 *dwc;
+
+	enum usb_role cur_role;
+	struct usb_role_switch *role_switch;
+};
+
+static void switch_usb2_role(struct dwc3_rtk *rtk, enum usb_role role)
+{
+	void __iomem *reg;
+	int val;
+
+	reg = rtk->regs + WRAP_USB2_PHY_REG;
+	val = ~USB2_PHY_SWITCH_MASK & readl(reg);
+
+	switch (role) {
+	case USB_ROLE_DEVICE:
+		writel(USB2_PHY_SWITCH_DEVICE | val, reg);
+		break;
+	case USB_ROLE_HOST:
+		writel(USB2_PHY_SWITCH_HOST | val, reg);
+		break;
+	default:
+		dev_dbg(rtk->dev, "%s: role=%d\n", __func__, role);
+		break;
+	}
+}
+
+static void switch_dwc3_role(struct dwc3_rtk *rtk, enum usb_role role)
+{
+	if (!rtk->dwc->role_sw)
+		return;
+
+	usb_role_switch_set_role(rtk->dwc->role_sw, role);
+}
+
+static enum usb_role dwc3_rtk_get_role(struct dwc3_rtk *rtk)
+{
+	enum usb_role role;
+
+	role = rtk->cur_role;
+
+	if (rtk->dwc && rtk->dwc->role_sw)
+		role = usb_role_switch_get_role(rtk->dwc->role_sw);
+	else
+		dev_dbg(rtk->dev, "%s not usb_role_switch role=%d\n", __func__, role);
+
+	return role;
+}
+
+static void dwc3_rtk_set_role(struct dwc3_rtk *rtk, enum usb_role role)
+{
+	rtk->cur_role = role;
+
+	switch_dwc3_role(rtk, role);
+	mdelay(10);
+	switch_usb2_role(rtk, role);
+}
+
+#if IS_ENABLED(CONFIG_USB_ROLE_SWITCH)
+static int dwc3_usb_role_switch_set(struct usb_role_switch *sw, enum usb_role role)
+{
+	struct dwc3_rtk *rtk = usb_role_switch_get_drvdata(sw);
+
+	dwc3_rtk_set_role(rtk, role);
+
+	return 0;
+}
+
+static enum usb_role dwc3_usb_role_switch_get(struct usb_role_switch *sw)
+{
+	struct dwc3_rtk *rtk = usb_role_switch_get_drvdata(sw);
+
+	return dwc3_rtk_get_role(rtk);
+}
+
+static int dwc3_rtk_setup_role_switch(struct dwc3_rtk *rtk)
+{
+	struct usb_role_switch_desc dwc3_role_switch = {NULL};
+
+	dwc3_role_switch.name = dev_name(rtk->dev);
+	dwc3_role_switch.driver_data = rtk;
+	dwc3_role_switch.allow_userspace_control = true;
+	dwc3_role_switch.fwnode = dev_fwnode(rtk->dev);
+	dwc3_role_switch.set = dwc3_usb_role_switch_set;
+	dwc3_role_switch.get = dwc3_usb_role_switch_get;
+	rtk->role_switch = usb_role_switch_register(rtk->dev, &dwc3_role_switch);
+	if (IS_ERR(rtk->role_switch))
+		return PTR_ERR(rtk->role_switch);
+
+	return 0;
+}
+
+static int dwc3_rtk_remove_role_switch(struct dwc3_rtk *rtk)
+{
+	if (rtk->role_switch)
+		usb_role_switch_unregister(rtk->role_switch);
+
+	rtk->role_switch = NULL;
+
+	return 0;
+}
+#else
+#define dwc3_rtk_setup_role_switch(x) 0
+#define dwc3_rtk_remove_role_switch(x) 0
+#endif
+
+static const char *const speed_names[] = {
+	[USB_SPEED_UNKNOWN] = "UNKNOWN",
+	[USB_SPEED_LOW] = "low-speed",
+	[USB_SPEED_FULL] = "full-speed",
+	[USB_SPEED_HIGH] = "high-speed",
+	[USB_SPEED_WIRELESS] = "wireless",
+	[USB_SPEED_SUPER] = "super-speed",
+	[USB_SPEED_SUPER_PLUS] = "super-speed-plus",
+};
+
+static enum usb_device_speed __get_dwc3_maximum_speed(struct device_node *np)
+{
+	struct device_node *dwc3_np;
+	const char *maximum_speed;
+	int ret;
+
+	dwc3_np = of_get_compatible_child(np, "snps,dwc3");
+	if (!dwc3_np)
+		return USB_SPEED_UNKNOWN;
+
+	ret = of_property_read_string(dwc3_np, "maximum-speed", &maximum_speed);
+	if (ret < 0)
+		return USB_SPEED_UNKNOWN;
+
+	ret = match_string(speed_names, ARRAY_SIZE(speed_names), maximum_speed);
+
+	return (ret < 0) ? USB_SPEED_UNKNOWN : ret;
+}
+
+static int dwc3_rtk_init(struct dwc3_rtk *rtk)
+{
+	struct device *dev = rtk->dev;
+	void __iomem *reg;
+	int val;
+	enum usb_device_speed maximum_speed;
+	const struct soc_device_attribute rtk_soc_kylin_a00[] = {
+		{ .family = "Realtek Kylin", .revision = "A00", },
+		{ /* empty */ } };
+	const struct soc_device_attribute rtk_soc_hercules[] = {
+		{ .family = "Realtek Hercules", }, { /* empty */ } };
+	const struct soc_device_attribute rtk_soc_thor[] = {
+		{ .family = "Realtek Thor", }, { /* empty */ } };
+
+	if (soc_device_match(rtk_soc_kylin_a00)) {
+		reg = rtk->regs + WRAP_CTR_REG;
+		val = readl(reg);
+		writel(DISABLE_MULTI_REQ | val, reg);
+		dev_info(dev, "[bug fixed] 1295/1296 A00: add workaround to disable multiple request for D-Bus");
+	}
+
+	if (soc_device_match(rtk_soc_hercules)) {
+		reg = rtk->regs + WRAP_USB2_PHY_REG;
+		val = readl(reg);
+		writel(USB2_PHY_EN_PHY_PLL_PORT1 | val, reg);
+		dev_info(dev, "[bug fixed] 1395 add workaround to disable usb2 port 2 suspend!");
+	}
+
+	reg = rtk->regs + WRAP_USB2_PHY_UTMI_REG;
+	val = readl(reg);
+	writel(TXHSVM_EN | val, reg);
+
+	maximum_speed = __get_dwc3_maximum_speed(dev->of_node);
+	if (maximum_speed != USB_SPEED_UNKNOWN && maximum_speed <= USB_SPEED_HIGH) {
+		if (soc_device_match(rtk_soc_thor)) {
+			reg = rtk->regs + WRAP_USB_HMAC_CTR0_REG;
+			val = readl(reg);
+			writel(U3PORT_DIS | val, reg);
+		} else {
+			reg = rtk->regs + WRAP_CTR_REG;
+			val = readl(reg);
+			writel(FORCE_PIPE3_PHY_STATUS_TO_0 | val, reg);
+
+			reg = rtk->regs + WRAP_PHY_PIPE_REG;
+			val = ~CLOCK_ENABLE_FOR_PIPE3_PCLK & readl(reg);
+			writel(RESET_DISABLE_PIPE3_P0 | val, reg);
+
+			reg =  rtk->regs + WRAP_USB_HMAC_CTR0_REG;
+			val = readl(reg);
+			writel(U3PORT_DIS | val, reg);
+
+			reg = rtk->regs + WRAP_APHY_REG;
+			val = readl(reg);
+			writel(~USB3_MBIAS_ENABLE & val, reg);
+
+			dev_dbg(rtk->dev, "%s: disable usb 3.0 phy\n", __func__);
+		}
+	}
+
+	reg = rtk->regs + WRAP_CTR_REG;
+	val = readl(reg);
+	writel(DESC_R2W_MULTI_DISABLE | val, reg);
+
+	/* Set phy Dp/Dm initial state to host mode to avoid the Dp glitch */
+	reg = rtk->regs + WRAP_USB2_PHY_REG;
+	val = ~USB2_PHY_SWITCH_MASK & readl(reg);
+	writel(USB2_PHY_SWITCH_HOST | val, reg);
+
+	if (rtk->pm_base) {
+		reg = rtk->pm_base + USB_DBUS_PWR_CTRL_REG;
+		val = DBUS_PWR_CTRL_EN | readl(reg);
+		writel(val, reg);
+	}
+
+	return 0;
+}
+
+static int dwc3_rtk_probe_dwc3_core(struct dwc3_rtk *rtk)
+{
+	struct device *dev = rtk->dev;
+	struct device_node *node = dev->of_node;
+	struct platform_device *dwc3_pdev;
+	struct device *dwc3_dev;
+	struct device_node *dwc3_node;
+	enum usb_dr_mode dr_mode;
+	int ret = 0;
+
+	ret = dwc3_rtk_init(rtk);
+	if (ret)
+		return -EINVAL;
+
+	ret = of_platform_populate(node, NULL, NULL, dev);
+	if (ret) {
+		dev_err(dev, "failed to add dwc3 core\n");
+		return ret;
+	}
+
+	dwc3_node = of_get_compatible_child(node, "snps,dwc3");
+	if (!dwc3_node) {
+		dev_err(dev, "failed to find dwc3 core node\n");
+		ret = -ENODEV;
+		goto depopulate;
+	}
+
+	dwc3_pdev = of_find_device_by_node(dwc3_node);
+	if (!dwc3_pdev) {
+		dev_err(dev, "failed to find dwc3 core platform_device\n");
+		ret = -ENODEV;
+		goto err_node_put;
+	}
+
+	dwc3_dev = &dwc3_pdev->dev;
+	rtk->dwc = platform_get_drvdata(dwc3_pdev);
+	if (!rtk->dwc) {
+		dev_err(dev, "failed to find dwc3 core\n");
+		ret = -ENODEV;
+		goto err_pdev_put;
+	}
+
+	dr_mode = usb_get_dr_mode(dwc3_dev);
+	if (dr_mode != rtk->dwc->dr_mode) {
+		dev_info(dev, "dts set dr_mode=%d, but dwc3 set dr_mode=%d\n",
+			 dr_mode, rtk->dwc->dr_mode);
+		dr_mode = rtk->dwc->dr_mode;
+	}
+
+	switch (dr_mode) {
+	case USB_DR_MODE_PERIPHERAL:
+		rtk->cur_role = USB_ROLE_DEVICE;
+		break;
+	case USB_DR_MODE_HOST:
+		rtk->cur_role = USB_ROLE_HOST;
+		break;
+	default:
+		dev_dbg(rtk->dev, "%s: dr_mode=%d\n", __func__, dr_mode);
+		break;
+	}
+
+	if (device_property_read_bool(dwc3_dev, "usb-role-switch")) {
+		ret = dwc3_rtk_setup_role_switch(rtk);
+		if (ret) {
+			dev_err(dev, "dwc3_rtk_setup_role_switch fail=%d\n", ret);
+			goto err_pdev_put;
+		}
+		rtk->cur_role = dwc3_rtk_get_role(rtk);
+	}
+
+	switch_usb2_role(rtk, rtk->cur_role);
+
+	return 0;
+
+err_pdev_put:
+	platform_device_put(dwc3_pdev);
+err_node_put:
+	of_node_put(dwc3_node);
+depopulate:
+	of_platform_depopulate(dev);
+
+	return ret;
+}
+
+static int dwc3_rtk_probe(struct platform_device *pdev)
+{
+	struct dwc3_rtk *rtk;
+	struct device *dev = &pdev->dev;
+	struct resource *res;
+	void __iomem *regs;
+	int ret = 0;
+
+	rtk = devm_kzalloc(dev, sizeof(*rtk), GFP_KERNEL);
+	if (!rtk) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	platform_set_drvdata(pdev, rtk);
+
+	rtk->dev = dev;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(dev, "missing memory resource\n");
+		ret = -ENODEV;
+		goto out;
+	}
+
+	regs = devm_ioremap_resource(dev, res);
+	if (IS_ERR(regs)) {
+		ret = PTR_ERR(regs);
+		goto out;
+	}
+
+	rtk->regs = regs;
+	rtk->regs_size = resource_size(res);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+	if (res) {
+		rtk->pm_base = devm_ioremap_resource(dev, res);
+		if (IS_ERR(rtk->pm_base)) {
+			ret = PTR_ERR(rtk->pm_base);
+			goto out;
+		}
+	}
+
+	ret = dwc3_rtk_probe_dwc3_core(rtk);
+
+out:
+	return ret;
+}
+
+static void dwc3_rtk_remove(struct platform_device *pdev)
+{
+	struct dwc3_rtk *rtk = platform_get_drvdata(pdev);
+
+	rtk->dwc = NULL;
+
+	dwc3_rtk_remove_role_switch(rtk);
+
+	of_platform_depopulate(rtk->dev);
+}
+
+static void dwc3_rtk_shutdown(struct platform_device *pdev)
+{
+	struct dwc3_rtk *rtk = platform_get_drvdata(pdev);
+
+	of_platform_depopulate(rtk->dev);
+}
+
+static const struct of_device_id rtk_dwc3_match[] = {
+	{ .compatible = "realtek,rtd-dwc3" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, rtk_dwc3_match);
+
+#ifdef CONFIG_PM_SLEEP
+static int dwc3_rtk_suspend(struct device *dev)
+{
+	return 0;
+}
+
+static int dwc3_rtk_resume(struct device *dev)
+{
+	struct dwc3_rtk *rtk = dev_get_drvdata(dev);
+
+	dwc3_rtk_init(rtk);
+
+	switch_usb2_role(rtk, rtk->cur_role);
+
+	/* runtime set active to reflect active state. */
+	pm_runtime_disable(dev);
+	pm_runtime_set_active(dev);
+	pm_runtime_enable(dev);
+
+	return 0;
+}
+
+static const struct dev_pm_ops dwc3_rtk_dev_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(dwc3_rtk_suspend, dwc3_rtk_resume)
+};
+
+#define DEV_PM_OPS	(&dwc3_rtk_dev_pm_ops)
+#else
+#define DEV_PM_OPS	NULL
+#endif /* CONFIG_PM_SLEEP */
+
+static struct platform_driver dwc3_rtk_driver = {
+	.probe		= dwc3_rtk_probe,
+	.remove_new	= dwc3_rtk_remove,
+	.driver		= {
+		.name	= "rtk-dwc3",
+		.of_match_table = rtk_dwc3_match,
+		.pm	= DEV_PM_OPS,
+	},
+	.shutdown	= dwc3_rtk_shutdown,
+};
+
+module_platform_driver(dwc3_rtk_driver);
+
+MODULE_AUTHOR("Stanley Chang <stanley_chang@realtek.com>");
+MODULE_DESCRIPTION("DesignWare USB3 Realtek Glue Layer");
+MODULE_ALIAS("platform:rtk-dwc3");
+MODULE_LICENSE("GPL");
+MODULE_SOFTDEP("pre: phy_rtk_usb2 phy_rtk_usb3");
--- a/drivers/usb/dwc3/dwc3-xilinx.c
+++ b/drivers/usb/dwc3/dwc3-xilinx.c
@ -32,9 +32,6 @@
 #define XLNX_USB_TRAFFIC_ROUTE_CONFIG		0x005C
 #define XLNX_USB_TRAFFIC_ROUTE_FPD		0x1

-/* Versal USB Reset ID */
-#define VERSAL_USB_RESET_ID			0xC104036
-
 #define XLNX_USB_FPD_PIPE_CLK			0x7c
 #define PIPE_CLK_DESELECT			1
 #define PIPE_CLK_SELECT				0
@ -72,20 +69,23 @@ static void dwc3_xlnx_mask_phy_rst(struct dwc3_xlnx *priv_data, bool mask)
 static int dwc3_xlnx_init_versal(struct dwc3_xlnx *priv_data)
 {
 	struct device		*dev = priv_data->dev;
+	struct reset_control	*crst;
 	int			ret;

+	crst = devm_reset_control_get_exclusive(dev, NULL);
+	if (IS_ERR(crst))
+		return dev_err_probe(dev, PTR_ERR(crst), "failed to get reset signal\n");
+
 	dwc3_xlnx_mask_phy_rst(priv_data, false);

 	/* Assert and De-assert reset */
-	ret = zynqmp_pm_reset_assert(VERSAL_USB_RESET_ID,
-				     PM_RESET_ACTION_ASSERT);
+	ret = reset_control_assert(crst);
 	if (ret < 0) {
 		dev_err_probe(dev, ret, "failed to assert Reset\n");
 		return ret;
 	}

-	ret = zynqmp_pm_reset_assert(VERSAL_USB_RESET_ID,
-				     PM_RESET_ACTION_RELEASE);
+	ret = reset_control_deassert(crst);
 	if (ret < 0) {
 		dev_err_probe(dev, ret, "failed to De-assert Reset\n");
 		return ret;
--- a/drivers/usb/gadget/function/f_ncm.c
+++ b/drivers/usb/gadget/function/f_ncm.c
@ -1410,7 +1410,7 @@ static int ncm_bind(struct usb_configuration *c, struct usb_function *f)
 	struct usb_composite_dev *cdev = c->cdev;
 	struct f_ncm		*ncm = func_to_ncm(f);
 	struct usb_string	*us;
-	int			status;
+	int			status = 0;
 	struct usb_ep		*ep;
 	struct f_ncm_opts	*ncm_opts;

@ -1428,22 +1428,17 @@ static int ncm_bind(struct usb_configuration *c, struct usb_function *f)
 		f->os_desc_table[0].os_desc = &ncm_opts->ncm_os_desc;
 	}

-	/*
-	 * in drivers/usb/gadget/configfs.c:configfs_composite_bind()
-	 * configurations are bound in sequence with list_for_each_entry,
-	 * in each configuration its functions are bound in sequence
-	 * with list_for_each_entry, so we assume no race condition
-	 * with regard to ncm_opts->bound access
-	 */
-	if (!ncm_opts->bound) {
-		mutex_lock(&ncm_opts->lock);
-		gether_set_gadget(ncm_opts->net, cdev->gadget);
+	mutex_lock(&ncm_opts->lock);
+	gether_set_gadget(ncm_opts->net, cdev->gadget);
+	if (!ncm_opts->bound)
 		status = gether_register_netdev(ncm_opts->net);
-		mutex_unlock(&ncm_opts->lock);
-		if (status)
-			goto fail;
-		ncm_opts->bound = true;
-	}
+	mutex_unlock(&ncm_opts->lock);
+
+	if (status)
+		goto fail;
+
+	ncm_opts->bound = true;
+
 	us = usb_gstrings_attach(cdev, ncm_strings,
 				 ARRAY_SIZE(ncm_string_defs));
 	if (IS_ERR(us)) {
--- a/drivers/usb/gadget/function/f_uac2.c
+++ b/drivers/usb/gadget/function/f_uac2.c
@ -212,7 +212,7 @@ static struct uac2_input_terminal_descriptor io_in_it_desc = {

 	.bDescriptorSubtype = UAC_INPUT_TERMINAL,
 	/* .bTerminalID = DYNAMIC */
-	.wTerminalType = cpu_to_le16(UAC_INPUT_TERMINAL_MICROPHONE),
+	/* .wTerminalType = DYNAMIC */
 	.bAssocTerminal = 0,
 	/* .bCSourceID = DYNAMIC */
 	.iChannelNames = 0,
@ -240,7 +240,7 @@ static struct uac2_output_terminal_descriptor io_out_ot_desc = {

 	.bDescriptorSubtype = UAC_OUTPUT_TERMINAL,
 	/* .bTerminalID = DYNAMIC */
-	.wTerminalType = cpu_to_le16(UAC_OUTPUT_TERMINAL_SPEAKER),
+	/* .wTerminalType = DYNAMIC */
 	.bAssocTerminal = 0,
 	/* .bSourceID = DYNAMIC */
 	/* .bCSourceID = DYNAMIC */
@ -977,6 +977,9 @@ static void setup_descriptor(struct f_uac2_opts *opts)
 		iad_desc.bInterfaceCount++;
 	}

+	io_in_it_desc.wTerminalType = cpu_to_le16(opts->c_terminal_type);
+	io_out_ot_desc.wTerminalType = cpu_to_le16(opts->p_terminal_type);
+
 	setup_headers(opts, fs_audio_desc, USB_SPEED_FULL);
 	setup_headers(opts, hs_audio_desc, USB_SPEED_HIGH);
 	setup_headers(opts, ss_audio_desc, USB_SPEED_SUPER);
@ -2095,6 +2098,9 @@ UAC2_ATTRIBUTE(s16, c_volume_res);
 UAC2_ATTRIBUTE(u32, fb_max);
 UAC2_ATTRIBUTE_STRING(function_name);

+UAC2_ATTRIBUTE(s16, p_terminal_type);
+UAC2_ATTRIBUTE(s16, c_terminal_type);
+
 static struct configfs_attribute *f_uac2_attrs[] = {
 	&f_uac2_opts_attr_p_chmask,
 	&f_uac2_opts_attr_p_srate,
@ -2122,6 +2128,9 @@ static struct configfs_attribute *f_uac2_attrs[] = {

 	&f_uac2_opts_attr_function_name,

+	&f_uac2_opts_attr_p_terminal_type,
+	&f_uac2_opts_attr_c_terminal_type,
+
 	NULL,
 };

@ -2180,6 +2189,9 @@ static struct usb_function_instance *afunc_alloc_inst(void)

 	snprintf(opts->function_name, sizeof(opts->function_name), "Source/Sink");

+	opts->p_terminal_type = UAC2_DEF_P_TERM_TYPE;
+	opts->c_terminal_type = UAC2_DEF_C_TERM_TYPE;
+
 	return &opts->func_inst;
 }

--- a/drivers/usb/gadget/function/f_uvc.c
+++ b/drivers/usb/gadget/function/f_uvc.c
@ -516,6 +516,7 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed)
 	void *mem;

 	switch (speed) {
+	case USB_SPEED_SUPER_PLUS:
 	case USB_SPEED_SUPER:
 		uvc_control_desc = uvc->desc.ss_control;
 		uvc_streaming_cls = uvc->desc.ss_streaming;
@ -564,7 +565,8 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed)
 		bytes += uvc_interrupt_ep.bLength + uvc_interrupt_cs_ep.bLength;
 		n_desc += 2;

-		if (speed == USB_SPEED_SUPER) {
+		if (speed == USB_SPEED_SUPER ||
+		    speed == USB_SPEED_SUPER_PLUS) {
 			bytes += uvc_ss_interrupt_comp.bLength;
 			n_desc += 1;
 		}
@ -619,7 +621,8 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed)

 	if (uvc->enable_interrupt_ep) {
 		UVC_COPY_DESCRIPTOR(mem, dst, &uvc_interrupt_ep);
-		if (speed == USB_SPEED_SUPER)
+		if (speed == USB_SPEED_SUPER ||
+		    speed == USB_SPEED_SUPER_PLUS)
 			UVC_COPY_DESCRIPTOR(mem, dst, &uvc_ss_interrupt_comp);

 		UVC_COPY_DESCRIPTOR(mem, dst, &uvc_interrupt_cs_ep);
@ -795,6 +798,13 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f)
 		goto error;
 	}

+	f->ssp_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_SUPER_PLUS);
+	if (IS_ERR(f->ssp_descriptors)) {
+		ret = PTR_ERR(f->ssp_descriptors);
+		f->ssp_descriptors = NULL;
+		goto error;
+	}
+
 	/* Preallocate control endpoint request. */
 	uvc->control_req = usb_ep_alloc_request(cdev->gadget->ep0, GFP_KERNEL);
 	uvc->control_buf = kmalloc(UVC_MAX_REQUEST_SIZE, GFP_KERNEL);
--- a/drivers/usb/gadget/function/u_ether.c
+++ b/drivers/usb/gadget/function/u_ether.c
@ -1200,7 +1200,7 @@ void gether_disconnect(struct gether *link)

 	DBG(dev, "%s\n", __func__);

-	netif_stop_queue(dev->net);
+	netif_device_detach(dev->net);
 	netif_carrier_off(dev->net);

 	/* disable endpoints, forcing (synchronous) completion
--- a/drivers/usb/gadget/function/u_uac2.h
+++ b/drivers/usb/gadget/function/u_uac2.h
@ -35,6 +35,11 @@
 #define UAC2_DEF_REQ_NUM 2
 #define UAC2_DEF_INT_REQ_NUM	10

+#define UAC2_DEF_P_TERM_TYPE 0x301
+	/* UAC_OUTPUT_TERMINAL_SPEAKER */
+#define UAC2_DEF_C_TERM_TYPE 0x201
+	/* UAC_INPUT_TERMINAL_MICROPHONE*/
+
 struct f_uac2_opts {
 	struct usb_function_instance	func_inst;
 	int				p_chmask;
@ -65,6 +70,9 @@ struct f_uac2_opts {

 	char			function_name[32];

+	s16				p_terminal_type;
+	s16				c_terminal_type;
+
 	struct mutex			lock;
 	int				refcnt;
 };
--- a/drivers/usb/gadget/legacy/inode.c
+++ b/drivers/usb/gadget/legacy/inode.c
@ -31,6 +31,12 @@

 #include <linux/usb/gadgetfs.h>
 #include <linux/usb/gadget.h>
+#include <linux/usb/composite.h> /* for USB_GADGET_DELAYED_STATUS */
+
+/* Undef helpers from linux/usb/composite.h as gadgetfs redefines them */
+#undef DBG
+#undef ERROR
+#undef INFO


 /*
@ -1511,7 +1517,16 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
 			event->u.setup = *ctrl;
 			ep0_readable (dev);
 			spin_unlock (&dev->lock);
-			return 0;
+			/*
+			 * Return USB_GADGET_DELAYED_STATUS as a workaround to
+			 * stop some UDC drivers (e.g. dwc3) from automatically
+			 * proceeding with the status stage for 0-length
+			 * transfers.
+			 * Should be removed once all UDC drivers are fixed to
+			 * always delay the status stage until a response is
+			 * queued to EP0.
+			 */
+			return w_length == 0 ? USB_GADGET_DELAYED_STATUS : 0;
 		}
 	}

--- a/drivers/usb/gadget/legacy/raw_gadget.c
+++ b/drivers/usb/gadget/legacy/raw_gadget.c
@ -25,6 +25,7 @@
 #include <linux/usb/ch9.h>
 #include <linux/usb/ch11.h>
 #include <linux/usb/gadget.h>
+#include <linux/usb/composite.h>

 #include <uapi/linux/usb/raw_gadget.h>

@ -64,7 +65,7 @@ static int raw_event_queue_add(struct raw_event_queue *queue,
 	struct usb_raw_event *event;

 	spin_lock_irqsave(&queue->lock, flags);
-	if (WARN_ON(queue->size >= RAW_EVENT_QUEUE_SIZE)) {
+	if (queue->size >= RAW_EVENT_QUEUE_SIZE) {
 		spin_unlock_irqrestore(&queue->lock, flags);
 		return -ENOMEM;
 	}
@ -310,9 +311,10 @@ static int gadget_bind(struct usb_gadget *gadget,
 	dev->eps_num = i;
 	spin_unlock_irqrestore(&dev->lock, flags);

+	dev_dbg(&gadget->dev, "gadget connected\n");
 	ret = raw_queue_event(dev, USB_RAW_EVENT_CONNECT, 0, NULL);
 	if (ret < 0) {
-		dev_err(&gadget->dev, "failed to queue event\n");
+		dev_err(&gadget->dev, "failed to queue connect event\n");
 		set_gadget_data(gadget, NULL);
 		return ret;
 	}
@ -357,20 +359,65 @@ static int gadget_setup(struct usb_gadget *gadget,

 	ret = raw_queue_event(dev, USB_RAW_EVENT_CONTROL, sizeof(*ctrl), ctrl);
 	if (ret < 0)
-		dev_err(&gadget->dev, "failed to queue event\n");
+		dev_err(&gadget->dev, "failed to queue control event\n");
 	goto out;

 out_unlock:
 	spin_unlock_irqrestore(&dev->lock, flags);
 out:
+	if (ret == 0 && ctrl->wLength == 0) {
+		/*
+		 * Return USB_GADGET_DELAYED_STATUS as a workaround to stop
+		 * some UDC drivers (e.g. dwc3) from automatically proceeding
+		 * with the status stage for 0-length transfers.
+		 * Should be removed once all UDC drivers are fixed to always
+		 * delay the status stage until a response is queued to EP0.
+		 */
+		return USB_GADGET_DELAYED_STATUS;
+	}
 	return ret;
 }

-/* These are currently unused but present in case UDC driver requires them. */
-static void gadget_disconnect(struct usb_gadget *gadget) { }
-static void gadget_suspend(struct usb_gadget *gadget) { }
-static void gadget_resume(struct usb_gadget *gadget) { }
-static void gadget_reset(struct usb_gadget *gadget) { }
+static void gadget_disconnect(struct usb_gadget *gadget)
+{
+	struct raw_dev *dev = get_gadget_data(gadget);
+	int ret;
+
+	dev_dbg(&gadget->dev, "gadget disconnected\n");
+	ret = raw_queue_event(dev, USB_RAW_EVENT_DISCONNECT, 0, NULL);
+	if (ret < 0)
+		dev_err(&gadget->dev, "failed to queue disconnect event\n");
+}
+static void gadget_suspend(struct usb_gadget *gadget)
+{
+	struct raw_dev *dev = get_gadget_data(gadget);
+	int ret;
+
+	dev_dbg(&gadget->dev, "gadget suspended\n");
+	ret = raw_queue_event(dev, USB_RAW_EVENT_SUSPEND, 0, NULL);
+	if (ret < 0)
+		dev_err(&gadget->dev, "failed to queue suspend event\n");
+}
+static void gadget_resume(struct usb_gadget *gadget)
+{
+	struct raw_dev *dev = get_gadget_data(gadget);
+	int ret;
+
+	dev_dbg(&gadget->dev, "gadget resumed\n");
+	ret = raw_queue_event(dev, USB_RAW_EVENT_RESUME, 0, NULL);
+	if (ret < 0)
+		dev_err(&gadget->dev, "failed to queue resume event\n");
+}
+static void gadget_reset(struct usb_gadget *gadget)
+{
+	struct raw_dev *dev = get_gadget_data(gadget);
+	int ret;
+
+	dev_dbg(&gadget->dev, "gadget reset\n");
+	ret = raw_queue_event(dev, USB_RAW_EVENT_RESET, 0, NULL);
+	if (ret < 0)
+		dev_err(&gadget->dev, "failed to queue reset event\n");
+}

 /*----------------------------------------------------------------------*/

@ -663,12 +710,12 @@ static int raw_process_ep0_io(struct raw_dev *dev, struct usb_raw_ep_io *io,
 	if (WARN_ON(in && dev->ep0_out_pending)) {
 		ret = -ENODEV;
 		dev->state = STATE_DEV_FAILED;
-		goto out_done;
+		goto out_unlock;
 	}
 	if (WARN_ON(!in && dev->ep0_in_pending)) {
 		ret = -ENODEV;
 		dev->state = STATE_DEV_FAILED;
-		goto out_done;
+		goto out_unlock;
 	}

 	dev->req->buf = data;
@ -682,8 +729,7 @@ static int raw_process_ep0_io(struct raw_dev *dev, struct usb_raw_ep_io *io,
 		dev_err(&dev->gadget->dev,
 				"fail, usb_ep_queue returned %d\n", ret);
 		spin_lock_irqsave(&dev->lock, flags);
-		dev->state = STATE_DEV_FAILED;
-		goto out_done;
+		goto out_queue_failed;
 	}

 	ret = wait_for_completion_interruptible(&dev->ep0_done);
@ -692,13 +738,16 @@ static int raw_process_ep0_io(struct raw_dev *dev, struct usb_raw_ep_io *io,
 		usb_ep_dequeue(dev->gadget->ep0, dev->req);
 		wait_for_completion(&dev->ep0_done);
 		spin_lock_irqsave(&dev->lock, flags);
-		goto out_done;
+		if (dev->ep0_status == -ECONNRESET)
+			dev->ep0_status = -EINTR;
+		goto out_interrupted;
 	}

 	spin_lock_irqsave(&dev->lock, flags);
-	ret = dev->ep0_status;

-out_done:
+out_interrupted:
+	ret = dev->ep0_status;
+out_queue_failed:
 	dev->ep0_urb_queued = false;
 out_unlock:
 	spin_unlock_irqrestore(&dev->lock, flags);
@ -1066,8 +1115,7 @@ static int raw_process_ep_io(struct raw_dev *dev, struct usb_raw_ep_io *io,
 		dev_err(&dev->gadget->dev,
 				"fail, usb_ep_queue returned %d\n", ret);
 		spin_lock_irqsave(&dev->lock, flags);
-		dev->state = STATE_DEV_FAILED;
-		goto out_done;
+		goto out_queue_failed;
 	}

 	ret = wait_for_completion_interruptible(&done);
@ -1076,13 +1124,16 @@ static int raw_process_ep_io(struct raw_dev *dev, struct usb_raw_ep_io *io,
 		usb_ep_dequeue(ep->ep, ep->req);
 		wait_for_completion(&done);
 		spin_lock_irqsave(&dev->lock, flags);
-		goto out_done;
+		if (ep->status == -ECONNRESET)
+			ep->status = -EINTR;
+		goto out_interrupted;
 	}

 	spin_lock_irqsave(&dev->lock, flags);
-	ret = ep->status;

-out_done:
+out_interrupted:
+	ret = ep->status;
+out_queue_failed:
 	ep->urb_queued = false;
 out_unlock:
 	spin_unlock_irqrestore(&dev->lock, flags);
--- a/drivers/usb/gadget/udc/aspeed_udc.c
+++ b/drivers/usb/gadget/udc/aspeed_udc.c
@ -1432,15 +1432,24 @@ static void ast_udc_init_hw(struct ast_udc_dev *udc)
 	ast_udc_write(udc, 0, AST_UDC_EP0_CTRL);
 }

-static int ast_udc_remove(struct platform_device *pdev)
+static void ast_udc_remove(struct platform_device *pdev)
 {
 	struct ast_udc_dev *udc = platform_get_drvdata(pdev);
 	unsigned long flags;
 	u32 ctrl;

 	usb_del_gadget_udc(&udc->gadget);
-	if (udc->driver)
-		return -EBUSY;
+	if (udc->driver) {
+		/*
+		 * This is broken as only some cleanup is skipped, *udev is
+		 * freed and the register mapping goes away. Any further usage
+		 * probably crashes. Also the device is unbound, so the skipped
+		 * cleanup is never catched up later.
+		 */
+		dev_alert(&pdev->dev,
+			  "Driver is busy and still going away. Fasten your seat belts!\n");
+		return;
+	}

 	spin_lock_irqsave(&udc->lock, flags);

@ -1459,8 +1468,6 @@ static int ast_udc_remove(struct platform_device *pdev)
 				  udc->ep0_buf_dma);

 	udc->ep0_buf = NULL;
-
-	return 0;
 }

 static int ast_udc_probe(struct platform_device *pdev)
@ -1581,7 +1588,7 @@ MODULE_DEVICE_TABLE(of, ast_udc_of_dt_ids);

 static struct platform_driver ast_udc_driver = {
 	.probe			= ast_udc_probe,
-	.remove			= ast_udc_remove,
+	.remove_new		= ast_udc_remove,
 	.driver			= {
 		.name			= KBUILD_MODNAME,
 		.of_match_table		= ast_udc_of_dt_ids,
--- a/drivers/usb/gadget/udc/at91_udc.c
+++ b/drivers/usb/gadget/udc/at91_udc.c
@ -2000,6 +2000,7 @@ static int at91udc_resume(struct platform_device *pdev)
 #endif

 static struct platform_driver at91_udc_driver = {
+	.probe		= at91udc_probe,
 	.remove		= at91udc_remove,
 	.shutdown	= at91udc_shutdown,
 	.suspend	= at91udc_suspend,
@ -2010,7 +2011,7 @@ static struct platform_driver at91_udc_driver = {
 	},
 };

-module_platform_driver_probe(at91_udc_driver, at91udc_probe);
+module_platform_driver(at91_udc_driver);

 MODULE_DESCRIPTION("AT91 udc driver");
 MODULE_AUTHOR("Thomas Rathbone, David Brownell");
--- a/drivers/usb/gadget/udc/core.c
+++ b/drivers/usb/gadget/udc/core.c
@ -1126,12 +1126,12 @@ EXPORT_SYMBOL_GPL(usb_gadget_set_state);
 /* ------------------------------------------------------------------------- */

 /* Acquire connect_lock before calling this function. */
-static void usb_udc_connect_control_locked(struct usb_udc *udc) __must_hold(&udc->connect_lock)
+static int usb_udc_connect_control_locked(struct usb_udc *udc) __must_hold(&udc->connect_lock)
 {
 	if (udc->vbus)
-		usb_gadget_connect_locked(udc->gadget);
+		return usb_gadget_connect_locked(udc->gadget);
 	else
-		usb_gadget_disconnect_locked(udc->gadget);
+		return usb_gadget_disconnect_locked(udc->gadget);
 }

 static void vbus_event_work(struct work_struct *work)
@ -1605,12 +1605,23 @@ static int gadget_bind_driver(struct device *dev)
 	}
 	usb_gadget_enable_async_callbacks(udc);
 	udc->allow_connect = true;
-	usb_udc_connect_control_locked(udc);
+	ret = usb_udc_connect_control_locked(udc);
+	if (ret)
+		goto err_connect_control;
+
 	mutex_unlock(&udc->connect_lock);

 	kobject_uevent(&udc->dev.kobj, KOBJ_CHANGE);
 	return 0;

+ err_connect_control:
+	udc->allow_connect = false;
+	usb_gadget_disable_async_callbacks(udc);
+	if (gadget->irq)
+		synchronize_irq(gadget->irq);
+	usb_gadget_udc_stop_locked(udc);
+	mutex_unlock(&udc->connect_lock);
+
 err_start:
 	driver->unbind(udc->gadget);

--- a/drivers/usb/gadget/udc/fsl_qe_udc.c
+++ b/drivers/usb/gadget/udc/fsl_qe_udc.c
@ -27,9 +27,10 @@
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/moduleparam.h>
+#include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/of_irq.h>
-#include <linux/of_platform.h>
+#include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
@ -2471,17 +2472,12 @@ static const struct of_device_id qe_udc_match[];
 static int qe_udc_probe(struct platform_device *ofdev)
 {
 	struct qe_udc *udc;
-	const struct of_device_id *match;
 	struct device_node *np = ofdev->dev.of_node;
 	struct qe_ep *ep;
 	unsigned int ret = 0;
 	unsigned int i;
 	const void *prop;

-	match = of_match_device(qe_udc_match, &ofdev->dev);
-	if (!match)
-		return -EINVAL;
-
 	prop = of_get_property(np, "mode", NULL);
 	if (!prop || strcmp(prop, "peripheral"))
 		return -ENODEV;
@ -2493,7 +2489,7 @@ static int qe_udc_probe(struct platform_device *ofdev)
 		return -ENOMEM;
 	}

-	udc->soc_type = (unsigned long)match->data;
+	udc->soc_type = (unsigned long)device_get_match_data(&ofdev->dev);
 	udc->usb_regs = of_iomap(np, 0);
 	if (!udc->usb_regs) {
 		ret = -ENOMEM;
--- a/drivers/usb/gadget/udc/fsl_udc_core.c
+++ b/drivers/usb/gadget/udc/fsl_udc_core.c
@ -2666,6 +2666,7 @@ static const struct platform_device_id fsl_udc_devtype[] = {
 };
 MODULE_DEVICE_TABLE(platform, fsl_udc_devtype);
 static struct platform_driver udc_driver = {
+	.probe		= fsl_udc_probe,
 	.remove		= fsl_udc_remove,
 	.id_table	= fsl_udc_devtype,
 	/* these suspend and resume are not usb suspend and resume */
@ -2679,7 +2680,7 @@ static struct platform_driver udc_driver = {
 	},
 };

-module_platform_driver_probe(udc_driver, fsl_udc_probe);
+module_platform_driver(udc_driver);

 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_AUTHOR(DRIVER_AUTHOR);
--- a/drivers/usb/gadget/udc/fusb300_udc.c
+++ b/drivers/usb/gadget/udc/fusb300_udc.c
@ -1506,10 +1506,11 @@ static int fusb300_probe(struct platform_device *pdev)
 }

 static struct platform_driver fusb300_driver = {
-	.remove_new =	fusb300_remove,
-	.driver		= {
+	.probe = fusb300_probe,
+	.remove_new = fusb300_remove,
+	.driver = {
 		.name =	udc_name,
 	},
 };

-module_platform_driver_probe(fusb300_driver, fusb300_probe);
+module_platform_driver(fusb300_driver);
--- a/drivers/usb/gadget/udc/lpc32xx_udc.c
+++ b/drivers/usb/gadget/udc/lpc32xx_udc.c
@ -3254,6 +3254,7 @@ MODULE_DEVICE_TABLE(of, lpc32xx_udc_of_match);
 #endif

 static struct platform_driver lpc32xx_udc_driver = {
+	.probe		= lpc32xx_udc_probe,
 	.remove		= lpc32xx_udc_remove,
 	.shutdown	= lpc32xx_udc_shutdown,
 	.suspend	= lpc32xx_udc_suspend,
@ -3264,7 +3265,7 @@ static struct platform_driver lpc32xx_udc_driver = {
 	},
 };

-module_platform_driver_probe(lpc32xx_udc_driver, lpc32xx_udc_probe);
+module_platform_driver(lpc32xx_udc_driver);

 MODULE_DESCRIPTION("LPC32XX udc driver");
 MODULE_AUTHOR("Kevin Wells <kevin.wells@nxp.com>");
--- a/drivers/usb/gadget/udc/m66592-udc.c
+++ b/drivers/usb/gadget/udc/m66592-udc.c
@ -1687,10 +1687,11 @@ static int m66592_probe(struct platform_device *pdev)

 /*-------------------------------------------------------------------------*/
 static struct platform_driver m66592_driver = {
+	.probe =	m66592_probe,
 	.remove_new =	m66592_remove,
 	.driver		= {
 		.name =	udc_name,
 	},
 };

-module_platform_driver_probe(m66592_driver, m66592_probe);
+module_platform_driver(m66592_driver);
--- a/drivers/usb/gadget/udc/r8a66597-udc.c
+++ b/drivers/usb/gadget/udc/r8a66597-udc.c
@ -1964,13 +1964,14 @@ static int r8a66597_probe(struct platform_device *pdev)

 /*-------------------------------------------------------------------------*/
 static struct platform_driver r8a66597_driver = {
+	.probe =	r8a66597_probe,
 	.remove_new =	r8a66597_remove,
 	.driver		= {
 		.name =	udc_name,
 	},
 };

-module_platform_driver_probe(r8a66597_driver, r8a66597_probe);
+module_platform_driver(r8a66597_driver);

 MODULE_DESCRIPTION("R8A66597 USB gadget driver");
 MODULE_LICENSE("GPL");
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@ -60,6 +60,23 @@
 #define EHCI_USBLEGCTLSTS	4		/* legacy control/status */
 #define EHCI_USBLEGCTLSTS_SOOE	(1 << 13)	/* SMI on ownership change */

+/* ASMEDIA quirk use */
+#define ASMT_DATA_WRITE0_REG	0xF8
+#define ASMT_DATA_WRITE1_REG	0xFC
+#define ASMT_CONTROL_REG	0xE0
+#define ASMT_CONTROL_WRITE_BIT	0x02
+#define ASMT_WRITEREG_CMD	0x10423
+#define ASMT_FLOWCTL_ADDR	0xFA30
+#define ASMT_FLOWCTL_DATA	0xBA
+#define ASMT_PSEUDO_DATA	0
+
+/* Intel quirk use */
+#define USB_INTEL_XUSB2PR      0xD0
+#define USB_INTEL_USB2PRM      0xD4
+#define USB_INTEL_USB3_PSSEN   0xD8
+#define USB_INTEL_USB3PRM      0xDC
+
+#ifdef CONFIG_USB_PCI_AMD
 /* AMD quirk use */
 #define	AB_REG_BAR_LOW		0xe0
 #define	AB_REG_BAR_HIGH		0xe1
@ -93,21 +110,6 @@
 #define	NB_PIF0_PWRDOWN_0	0x01100012
 #define	NB_PIF0_PWRDOWN_1	0x01100013

-#define USB_INTEL_XUSB2PR      0xD0
-#define USB_INTEL_USB2PRM      0xD4
-#define USB_INTEL_USB3_PSSEN   0xD8
-#define USB_INTEL_USB3PRM      0xDC
-
-/* ASMEDIA quirk use */
-#define ASMT_DATA_WRITE0_REG	0xF8
-#define ASMT_DATA_WRITE1_REG	0xFC
-#define ASMT_CONTROL_REG	0xE0
-#define ASMT_CONTROL_WRITE_BIT	0x02
-#define ASMT_WRITEREG_CMD	0x10423
-#define ASMT_FLOWCTL_ADDR	0xFA30
-#define ASMT_FLOWCTL_DATA	0xBA
-#define ASMT_PSEUDO_DATA	0
-
 /*
 * amd_chipset_gen values represent AMD different chipset generations
 */
@ -458,50 +460,6 @@ void usb_amd_quirk_pll_disable(void)
 }
 EXPORT_SYMBOL_GPL(usb_amd_quirk_pll_disable);

-static int usb_asmedia_wait_write(struct pci_dev *pdev)
-{
-	unsigned long retry_count;
-	unsigned char value;
-
-	for (retry_count = 1000; retry_count > 0; --retry_count) {
-
-		pci_read_config_byte(pdev, ASMT_CONTROL_REG, &value);
-
-		if (value == 0xff) {
-			dev_err(&pdev->dev, "%s: check_ready ERROR", __func__);
-			return -EIO;
-		}
-
-		if ((value & ASMT_CONTROL_WRITE_BIT) == 0)
-			return 0;
-
-		udelay(50);
-	}
-
-	dev_warn(&pdev->dev, "%s: check_write_ready timeout", __func__);
-	return -ETIMEDOUT;
-}
-
-void usb_asmedia_modifyflowcontrol(struct pci_dev *pdev)
-{
-	if (usb_asmedia_wait_write(pdev) != 0)
-		return;
-
-	/* send command and address to device */
-	pci_write_config_dword(pdev, ASMT_DATA_WRITE0_REG, ASMT_WRITEREG_CMD);
-	pci_write_config_dword(pdev, ASMT_DATA_WRITE1_REG, ASMT_FLOWCTL_ADDR);
-	pci_write_config_byte(pdev, ASMT_CONTROL_REG, ASMT_CONTROL_WRITE_BIT);
-
-	if (usb_asmedia_wait_write(pdev) != 0)
-		return;
-
-	/* send data to device */
-	pci_write_config_dword(pdev, ASMT_DATA_WRITE0_REG, ASMT_FLOWCTL_DATA);
-	pci_write_config_dword(pdev, ASMT_DATA_WRITE1_REG, ASMT_PSEUDO_DATA);
-	pci_write_config_byte(pdev, ASMT_CONTROL_REG, ASMT_CONTROL_WRITE_BIT);
-}
-EXPORT_SYMBOL_GPL(usb_asmedia_modifyflowcontrol);
-
 void usb_amd_quirk_pll_enable(void)
 {
 	usb_amd_quirk_pll(0);
@ -630,7 +588,62 @@ bool usb_amd_pt_check_port(struct device *device, int port)
 	return !(value & BIT(port_shift));
 }
 EXPORT_SYMBOL_GPL(usb_amd_pt_check_port);
+#endif /* CONFIG_USB_PCI_AMD */

+static int usb_asmedia_wait_write(struct pci_dev *pdev)
+{
+	unsigned long retry_count;
+	unsigned char value;
+
+	for (retry_count = 1000; retry_count > 0; --retry_count) {
+
+		pci_read_config_byte(pdev, ASMT_CONTROL_REG, &value);
+
+		if (value == 0xff) {
+			dev_err(&pdev->dev, "%s: check_ready ERROR", __func__);
+			return -EIO;
+		}
+
+		if ((value & ASMT_CONTROL_WRITE_BIT) == 0)
+			return 0;
+
+		udelay(50);
+	}
+
+	dev_warn(&pdev->dev, "%s: check_write_ready timeout", __func__);
+	return -ETIMEDOUT;
+}
+
+void usb_asmedia_modifyflowcontrol(struct pci_dev *pdev)
+{
+	if (usb_asmedia_wait_write(pdev) != 0)
+		return;
+
+	/* send command and address to device */
+	pci_write_config_dword(pdev, ASMT_DATA_WRITE0_REG, ASMT_WRITEREG_CMD);
+	pci_write_config_dword(pdev, ASMT_DATA_WRITE1_REG, ASMT_FLOWCTL_ADDR);
+	pci_write_config_byte(pdev, ASMT_CONTROL_REG, ASMT_CONTROL_WRITE_BIT);
+
+	if (usb_asmedia_wait_write(pdev) != 0)
+		return;
+
+	/* send data to device */
+	pci_write_config_dword(pdev, ASMT_DATA_WRITE0_REG, ASMT_FLOWCTL_DATA);
+	pci_write_config_dword(pdev, ASMT_DATA_WRITE1_REG, ASMT_PSEUDO_DATA);
+	pci_write_config_byte(pdev, ASMT_CONTROL_REG, ASMT_CONTROL_WRITE_BIT);
+}
+EXPORT_SYMBOL_GPL(usb_asmedia_modifyflowcontrol);
+
+static inline int io_type_enabled(struct pci_dev *pdev, unsigned int mask)
+{
+	u16 cmd;
+
+	return !pci_read_config_word(pdev, PCI_COMMAND, &cmd) && (cmd & mask);
+}
+
+#define mmio_enabled(dev) io_type_enabled(dev, PCI_COMMAND_MEMORY)
+
+#if defined(CONFIG_HAS_IOPORT) && IS_ENABLED(CONFIG_USB_UHCI_HCD)
 /*
 * Make sure the controller is completely inactive, unable to
 * generate interrupts or do DMA.
@ -712,14 +725,7 @@ int uhci_check_and_reset_hc(struct pci_dev *pdev, unsigned long base)
 }
 EXPORT_SYMBOL_GPL(uhci_check_and_reset_hc);

-static inline int io_type_enabled(struct pci_dev *pdev, unsigned int mask)
-{
-	u16 cmd;
-	return !pci_read_config_word(pdev, PCI_COMMAND, &cmd) && (cmd & mask);
-}
-
 #define pio_enabled(dev) io_type_enabled(dev, PCI_COMMAND_IO)
-#define mmio_enabled(dev) io_type_enabled(dev, PCI_COMMAND_MEMORY)

 static void quirk_usb_handoff_uhci(struct pci_dev *pdev)
 {
@ -739,6 +745,12 @@ static void quirk_usb_handoff_uhci(struct pci_dev *pdev)
 		uhci_check_and_reset_hc(pdev, base);
 }

+#else /* defined(CONFIG_HAS_IOPORT && IS_ENABLED(CONFIG_USB_UHCI_HCD) */
+
+static void quirk_usb_handoff_uhci(struct pci_dev *pdev) {}
+
+#endif /* defined(CONFIG_HAS_IOPORT && IS_ENABLED(CONFIG_USB_UHCI_HCD) */
+
 static int mmio_resource_enabled(struct pci_dev *pdev, int idx)
 {
 	return pci_resource_start(pdev, idx) && mmio_enabled(pdev);
--- a/drivers/usb/host/pci-quirks.h
+++ b/drivers/usb/host/pci-quirks.h
@ -2,9 +2,7 @@
 #ifndef __LINUX_USB_PCI_QUIRKS_H
 #define __LINUX_USB_PCI_QUIRKS_H

-#ifdef CONFIG_USB_PCI
-void uhci_reset_hc(struct pci_dev *pdev, unsigned long base);
-int uhci_check_and_reset_hc(struct pci_dev *pdev, unsigned long base);
+#ifdef CONFIG_USB_PCI_AMD
 int usb_hcd_amd_remote_wakeup_quirk(struct pci_dev *pdev);
 bool usb_amd_hang_symptom_quirk(void);
 bool usb_amd_prefetch_quirk(void);
@ -12,23 +10,41 @@ void usb_amd_dev_put(void);
 bool usb_amd_quirk_pll_check(void);
 void usb_amd_quirk_pll_disable(void);
 void usb_amd_quirk_pll_enable(void);
-void usb_asmedia_modifyflowcontrol(struct pci_dev *pdev);
-void usb_enable_intel_xhci_ports(struct pci_dev *xhci_pdev);
-void usb_disable_xhci_ports(struct pci_dev *xhci_pdev);
 void sb800_prefetch(struct device *dev, int on);
 bool usb_amd_pt_check_port(struct device *device, int port);
 #else
-struct pci_dev;
+static inline bool usb_amd_hang_symptom_quirk(void)
+{
+	return false;
+};
+static inline bool usb_amd_prefetch_quirk(void)
+{
+	return false;
+}
 static inline void usb_amd_quirk_pll_disable(void) {}
 static inline void usb_amd_quirk_pll_enable(void) {}
-static inline void usb_asmedia_modifyflowcontrol(struct pci_dev *pdev) {}
 static inline void usb_amd_dev_put(void) {}
-static inline void usb_disable_xhci_ports(struct pci_dev *xhci_pdev) {}
+static inline bool usb_amd_quirk_pll_check(void)
+{
+	return false;
+}
 static inline void sb800_prefetch(struct device *dev, int on) {}
 static inline bool usb_amd_pt_check_port(struct device *device, int port)
 {
 	return false;
 }
+#endif /* CONFIG_USB_PCI_AMD */
+
+#ifdef CONFIG_USB_PCI
+void uhci_reset_hc(struct pci_dev *pdev, unsigned long base);
+int uhci_check_and_reset_hc(struct pci_dev *pdev, unsigned long base);
+void usb_asmedia_modifyflowcontrol(struct pci_dev *pdev);
+void usb_enable_intel_xhci_ports(struct pci_dev *xhci_pdev);
+void usb_disable_xhci_ports(struct pci_dev *xhci_pdev);
+#else
+struct pci_dev;
+static inline void usb_asmedia_modifyflowcontrol(struct pci_dev *pdev) {}
+static inline void usb_disable_xhci_ports(struct pci_dev *xhci_pdev) {}
 #endif  /* CONFIG_USB_PCI */

 #endif  /*  __LINUX_USB_PCI_QUIRKS_H  */
--- a/drivers/usb/host/xhci-debugfs.c
+++ b/drivers/usb/host/xhci-debugfs.c
@ -204,7 +204,7 @@ static void xhci_ring_dump_segment(struct seq_file *s,
 	for (i = 0; i < TRBS_PER_SEGMENT; i++) {
 		trb = &seg->trbs[i];
 		dma = seg->dma + i * sizeof(*trb);
-		seq_printf(s, "%pad: %s\n", &dma,
+		seq_printf(s, "%2u %pad: %s\n", seg->num, &dma,
 			   xhci_decode_trb(str, XHCI_MSG_MAX, le32_to_cpu(trb->generic.field[0]),
 					   le32_to_cpu(trb->generic.field[1]),
 					   le32_to_cpu(trb->generic.field[2]),
--- a/drivers/usb/host/xhci-ext-caps.h
+++ b/drivers/usb/host/xhci-ext-caps.h
@ -79,6 +79,33 @@
 /* true: Controller Not Ready to accept doorbell or op reg writes after reset */
 #define XHCI_STS_CNR		(1 << 11)

+/**
+ * struct xhci_protocol_caps
+ * @revision:		major revision, minor revision, capability ID,
+ *			and next capability pointer.
+ * @name_string:	Four ASCII characters to say which spec this xHC
+ *			follows, typically "USB ".
+ * @port_info:		Port offset, count, and protocol-defined information.
+ */
+struct xhci_protocol_caps {
+	u32	revision;
+	u32	name_string;
+	u32	port_info;
+};
+
+#define	XHCI_EXT_PORT_MAJOR(x)	(((x) >> 24) & 0xff)
+#define	XHCI_EXT_PORT_MINOR(x)	(((x) >> 16) & 0xff)
+#define	XHCI_EXT_PORT_PSIC(x)	(((x) >> 28) & 0x0f)
+#define	XHCI_EXT_PORT_OFF(x)	((x) & 0xff)
+#define	XHCI_EXT_PORT_COUNT(x)	(((x) >> 8) & 0xff)
+
+#define	XHCI_EXT_PORT_PSIV(x)	(((x) >> 0) & 0x0f)
+#define	XHCI_EXT_PORT_PSIE(x)	(((x) >> 4) & 0x03)
+#define	XHCI_EXT_PORT_PLT(x)	(((x) >> 6) & 0x03)
+#define	XHCI_EXT_PORT_PFD(x)	(((x) >> 8) & 0x01)
+#define	XHCI_EXT_PORT_LP(x)	(((x) >> 14) & 0x03)
+#define	XHCI_EXT_PORT_PSIM(x)	(((x) >> 16) & 0xffff)
+
 #include <linux/io.h>

 /**
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@ -1262,7 +1262,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 			retval = -ENODEV;
 			break;
 		}
-		trace_xhci_get_port_status(wIndex, temp);
+		trace_xhci_get_port_status(port, temp);
 		status = xhci_get_port_status(hcd, bus_state, wIndex, temp,
 					      &flags);
 		if (status == 0xffffffff)
@ -1687,7 +1687,7 @@ int xhci_hub_status_data(struct usb_hcd *hcd, char *buf)
 			retval = -ENODEV;
 			break;
 		}
-		trace_xhci_hub_status_data(i, temp);
+		trace_xhci_hub_status_data(ports[i], temp);

 		if ((temp & mask) != 0 ||
 			(bus_state->port_c_suspend & 1 << i) ||
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@ -29,6 +29,7 @@
 static struct xhci_segment *xhci_segment_alloc(struct xhci_hcd *xhci,
 					       unsigned int cycle_state,
 					       unsigned int max_packet,
+					       unsigned int num,
 					       gfp_t flags)
 {
 	struct xhci_segment *seg;
@ -60,6 +61,7 @@ static struct xhci_segment *xhci_segment_alloc(struct xhci_hcd *xhci,
 		for (i = 0; i < TRBS_PER_SEGMENT; i++)
 			seg->trbs[i].link.control = cpu_to_le32(TRB_CYCLE);
 	}
+	seg->num = num;
 	seg->dma = dma;
 	seg->next = NULL;

@ -128,7 +130,7 @@ static void xhci_link_rings(struct xhci_hcd *xhci, struct xhci_ring *ring,
 		struct xhci_segment *first, struct xhci_segment *last,
 		unsigned int num_segs)
 {
-	struct xhci_segment *next;
+	struct xhci_segment *next, *seg;
 	bool chain_links;

 	if (!ring || !first || !last)
@ -144,13 +146,18 @@ static void xhci_link_rings(struct xhci_hcd *xhci, struct xhci_ring *ring,
 	xhci_link_segments(last, next, ring->type, chain_links);
 	ring->num_segs += num_segs;

-	if (ring->type != TYPE_EVENT && ring->enq_seg == ring->last_seg) {
-		ring->last_seg->trbs[TRBS_PER_SEGMENT-1].link.control
-			&= ~cpu_to_le32(LINK_TOGGLE);
-		last->trbs[TRBS_PER_SEGMENT-1].link.control
-			|= cpu_to_le32(LINK_TOGGLE);
+	if (ring->enq_seg == ring->last_seg) {
+		if (ring->type != TYPE_EVENT) {
+			ring->last_seg->trbs[TRBS_PER_SEGMENT-1].link.control
+				&= ~cpu_to_le32(LINK_TOGGLE);
+			last->trbs[TRBS_PER_SEGMENT-1].link.control
+				|= cpu_to_le32(LINK_TOGGLE);
+		}
 		ring->last_seg = last;
 	}
+
+	for (seg = last; seg != ring->last_seg; seg = seg->next)
+		seg->next->num = seg->num + 1;
 }

 /*
@ -320,8 +327,9 @@ void xhci_initialize_ring_info(struct xhci_ring *ring,
 /* Allocate segments and link them for a ring */
 static int xhci_alloc_segments_for_ring(struct xhci_hcd *xhci,
 		struct xhci_segment **first, struct xhci_segment **last,
-		unsigned int num_segs, unsigned int cycle_state,
-		enum xhci_ring_type type, unsigned int max_packet, gfp_t flags)
+		unsigned int num_segs, unsigned int num,
+		unsigned int cycle_state, enum xhci_ring_type type,
+		unsigned int max_packet, gfp_t flags)
 {
 	struct xhci_segment *prev;
 	bool chain_links;
@ -331,16 +339,17 @@ static int xhci_alloc_segments_for_ring(struct xhci_hcd *xhci,
 			 (type == TYPE_ISOC &&
 			  (xhci->quirks & XHCI_AMD_0x96_HOST)));

-	prev = xhci_segment_alloc(xhci, cycle_state, max_packet, flags);
+	prev = xhci_segment_alloc(xhci, cycle_state, max_packet, num, flags);
 	if (!prev)
 		return -ENOMEM;
-	num_segs--;
+	num++;

 	*first = prev;
-	while (num_segs > 0) {
+	while (num < num_segs) {
 		struct xhci_segment	*next;

-		next = xhci_segment_alloc(xhci, cycle_state, max_packet, flags);
+		next = xhci_segment_alloc(xhci, cycle_state, max_packet, num,
+					  flags);
 		if (!next) {
 			prev = *first;
 			while (prev) {
@ -353,7 +362,7 @@ static int xhci_alloc_segments_for_ring(struct xhci_hcd *xhci,
 		xhci_link_segments(prev, next, type, chain_links);

 		prev = next;
-		num_segs--;
+		num++;
 	}
 	xhci_link_segments(prev, *first, type, chain_links);
 	*last = prev;
@ -388,7 +397,7 @@ struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci,
 		return ring;

 	ret = xhci_alloc_segments_for_ring(xhci, &ring->first_seg,
-			&ring->last_seg, num_segs, cycle_state, type,
+			&ring->last_seg, num_segs, 0, cycle_state, type,
 			max_packet, flags);
 	if (ret)
 		goto fail;
@ -428,7 +437,8 @@ int xhci_ring_expansion(struct xhci_hcd *xhci, struct xhci_ring *ring,
 	int			ret;

 	ret = xhci_alloc_segments_for_ring(xhci, &first, &last,
-			num_new_segs, ring->cycle_state, ring->type,
+			num_new_segs, ring->enq_seg->num + 1,
+			ring->cycle_state, ring->type,
 			ring->bounce_buf_len, flags);
 	if (ret)
 		return -ENOMEM;
@ -1766,7 +1776,7 @@ void xhci_free_command(struct xhci_hcd *xhci,
 	kfree(command);
 }

-int xhci_alloc_erst(struct xhci_hcd *xhci,
+static int xhci_alloc_erst(struct xhci_hcd *xhci,
 		    struct xhci_ring *evt_ring,
 		    struct xhci_erst *erst,
 		    gfp_t flags)
@ -1797,23 +1807,13 @@ int xhci_alloc_erst(struct xhci_hcd *xhci,
 }

 static void
-xhci_free_interrupter(struct xhci_hcd *xhci, struct xhci_interrupter *ir)
+xhci_remove_interrupter(struct xhci_hcd *xhci, struct xhci_interrupter *ir)
 {
-	struct device *dev = xhci_to_hcd(xhci)->self.sysdev;
-	size_t erst_size;
-	u64 tmp64;
 	u32 tmp;

 	if (!ir)
 		return;

-	erst_size = sizeof(struct xhci_erst_entry) * ir->erst.num_entries;
-	if (ir->erst.entries)
-		dma_free_coherent(dev, erst_size,
-				  ir->erst.entries,
-				  ir->erst.erst_dma_addr);
-	ir->erst.entries = NULL;
-
 	/*
 	 * Clean out interrupter registers except ERSTBA. Clearing either the
 	 * low or high 32 bits of ERSTBA immediately causes the controller to
@ -1824,14 +1824,30 @@ xhci_free_interrupter(struct xhci_hcd *xhci, struct xhci_interrupter *ir)
 		tmp &= ERST_SIZE_MASK;
 		writel(tmp, &ir->ir_set->erst_size);

-		tmp64 = xhci_read_64(xhci, &ir->ir_set->erst_dequeue);
-		tmp64 &= (u64) ERST_PTR_MASK;
-		xhci_write_64(xhci, tmp64, &ir->ir_set->erst_dequeue);
+		xhci_write_64(xhci, ERST_EHB, &ir->ir_set->erst_dequeue);
 	}
+}

-	/* free interrrupter event ring */
+static void
+xhci_free_interrupter(struct xhci_hcd *xhci, struct xhci_interrupter *ir)
+{
+	struct device *dev = xhci_to_hcd(xhci)->self.sysdev;
+	size_t erst_size;
+
+	if (!ir)
+		return;
+
+	erst_size = sizeof(struct xhci_erst_entry) * ir->erst.num_entries;
+	if (ir->erst.entries)
+		dma_free_coherent(dev, erst_size,
+				  ir->erst.entries,
+				  ir->erst.erst_dma_addr);
+	ir->erst.entries = NULL;
+
+	/* free interrupter event ring */
 	if (ir->event_ring)
 		xhci_ring_free(xhci, ir->event_ring);
+
 	ir->event_ring = NULL;

 	kfree(ir);
@ -1844,6 +1860,7 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)

 	cancel_delayed_work_sync(&xhci->cmd_timer);

+	xhci_remove_interrupter(xhci, xhci->interrupter);
 	xhci_free_interrupter(xhci, xhci->interrupter);
 	xhci->interrupter = NULL;
 	xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Freed primary event ring");
@ -1933,7 +1950,6 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)

 static void xhci_set_hc_event_deq(struct xhci_hcd *xhci, struct xhci_interrupter *ir)
 {
-	u64 temp;
 	dma_addr_t deq;

 	deq = xhci_trb_virt_to_dma(ir->event_ring->deq_seg,
@ -1941,16 +1957,12 @@ static void xhci_set_hc_event_deq(struct xhci_hcd *xhci, struct xhci_interrupter
 	if (!deq)
 		xhci_warn(xhci, "WARN something wrong with SW event ring dequeue ptr.\n");
 	/* Update HC event ring dequeue pointer */
-	temp = xhci_read_64(xhci, &ir->ir_set->erst_dequeue);
-	temp &= ERST_PTR_MASK;
 	/* Don't clear the EHB bit (which is RW1C) because
 	 * there might be more events to service.
 	 */
-	temp &= ~ERST_EHB;
 	xhci_dbg_trace(xhci, trace_xhci_dbg_init,
 		       "// Write event ring dequeue pointer, preserving EHB bit");
-	xhci_write_64(xhci, ((u64) deq & (u64) ~ERST_PTR_MASK) | temp,
-			&ir->ir_set->erst_dequeue);
+	xhci_write_64(xhci, deq & ERST_PTR_MASK, &ir->ir_set->erst_dequeue);
 }

 static void xhci_add_in_port(struct xhci_hcd *xhci, unsigned int num_ports,
@ -2238,14 +2250,18 @@ xhci_alloc_interrupter(struct xhci_hcd *xhci, gfp_t flags)
 {
 	struct device *dev = xhci_to_hcd(xhci)->self.sysdev;
 	struct xhci_interrupter *ir;
+	unsigned int num_segs;
 	int ret;

 	ir = kzalloc_node(sizeof(*ir), flags, dev_to_node(dev));
 	if (!ir)
 		return NULL;

-	ir->event_ring = xhci_ring_alloc(xhci, ERST_NUM_SEGS, 1, TYPE_EVENT,
-					0, flags);
+	num_segs = min_t(unsigned int, 1 << HCS_ERST_MAX(xhci->hcs_params2),
+			 ERST_MAX_SEGS);
+
+	ir->event_ring = xhci_ring_alloc(xhci, num_segs, 1, TYPE_EVENT, 0,
+					 flags);
 	if (!ir->event_ring) {
 		xhci_warn(xhci, "Failed to allocate interrupter event ring\n");
 		kfree(ir);
@ -2281,7 +2297,7 @@ xhci_add_interrupter(struct xhci_hcd *xhci, struct xhci_interrupter *ir,
 	/* set ERST count with the number of entries in the segment table */
 	erst_size = readl(&ir->ir_set->erst_size);
 	erst_size &= ERST_SIZE_MASK;
-	erst_size |= ERST_NUM_SEGS;
+	erst_size |= ir->event_ring->num_segs;
 	writel(erst_size, &ir->ir_set->erst_size);

 	erst_base = xhci_read_64(xhci, &ir->ir_set->erst_base);
--- a/drivers/usb/host/xhci-mtk-sch.c
+++ b/drivers/usb/host/xhci-mtk-sch.c
@ -19,6 +19,18 @@
 #define HS_BW_BOUNDARY	6144
 /* usb2 spec section11.18.1: at most 188 FS bytes per microframe */
 #define FS_PAYLOAD_MAX 188
+#define LS_PAYLOAD_MAX 18
+/* section 11.18.1, per fs frame */
+#define FS_BW_BOUNDARY	1157
+#define LS_BW_BOUNDARY	144
+
+/*
+ * max number of microframes for split transfer, assume extra-cs budget is 0
+ * for fs isoc in : 1 ss + 1 idle + 6 cs (roundup(1023/188))
+ */
+#define TT_MICROFRAMES_MAX	8
+/* offset from SS for fs/ls isoc/intr ep (ss + idle) */
+#define CS_OFFSET	2

 #define DBG_BUF_EN	64

@ -237,17 +249,26 @@ static void drop_tt(struct usb_device *udev)

 static struct mu3h_sch_ep_info *
 create_sch_ep(struct xhci_hcd_mtk *mtk, struct usb_device *udev,
-	      struct usb_host_endpoint *ep)
+	      struct usb_host_endpoint *ep, struct xhci_ep_ctx *ep_ctx)
 {
 	struct mu3h_sch_ep_info *sch_ep;
 	struct mu3h_sch_bw_info *bw_info;
 	struct mu3h_sch_tt *tt = NULL;
+	u32 len;

 	bw_info = get_bw_info(mtk, udev, ep);
 	if (!bw_info)
 		return ERR_PTR(-ENODEV);

-	sch_ep = kzalloc(sizeof(*sch_ep), GFP_KERNEL);
+	if (is_fs_or_ls(udev->speed))
+		len = TT_MICROFRAMES_MAX;
+	else if ((udev->speed >= USB_SPEED_SUPER) &&
+		 usb_endpoint_xfer_isoc(&ep->desc))
+		len = get_esit(ep_ctx);
+	else
+		len = 1;
+
+	sch_ep = kzalloc(struct_size(sch_ep, bw_budget_table, len), GFP_KERNEL);
 	if (!sch_ep)
 		return ERR_PTR(-ENOMEM);

@ -279,7 +300,11 @@ static void setup_sch_info(struct xhci_ep_ctx *ep_ctx,
 	u32 mult;
 	u32 esit_pkts;
 	u32 max_esit_payload;
+	u32 bw_per_microframe;
+	u32 *bwb_table;
+	int i;

+	bwb_table = sch_ep->bw_budget_table;
 	ep_type = CTX_TO_EP_TYPE(le32_to_cpu(ep_ctx->ep_info2));
 	maxpkt = MAX_PACKET_DECODED(le32_to_cpu(ep_ctx->ep_info2));
 	max_burst = CTX_TO_MAX_BURST(le32_to_cpu(ep_ctx->ep_info2));
@ -313,7 +338,7 @@ static void setup_sch_info(struct xhci_ep_ctx *ep_ctx,
 		 * opportunities per microframe
 		 */
 		sch_ep->pkts = max_burst + 1;
-		sch_ep->bw_cost_per_microframe = maxpkt * sch_ep->pkts;
+		bwb_table[0] = maxpkt * sch_ep->pkts;
 	} else if (sch_ep->speed >= USB_SPEED_SUPER) {
 		/* usb3_r1 spec section4.4.7 & 4.4.8 */
 		sch_ep->cs_count = 0;
@ -330,6 +355,7 @@ static void setup_sch_info(struct xhci_ep_ctx *ep_ctx,
 		if (ep_type == INT_IN_EP || ep_type == INT_OUT_EP) {
 			sch_ep->pkts = esit_pkts;
 			sch_ep->num_budget_microframes = 1;
+			bwb_table[0] = maxpkt * sch_ep->pkts;
 		}

 		if (ep_type == ISOC_IN_EP || ep_type == ISOC_OUT_EP) {
@ -346,18 +372,52 @@ static void setup_sch_info(struct xhci_ep_ctx *ep_ctx,
 				DIV_ROUND_UP(esit_pkts, sch_ep->pkts);

 			sch_ep->repeat = !!(sch_ep->num_budget_microframes > 1);
+			bw_per_microframe = maxpkt * sch_ep->pkts;
+
+			for (i = 0; i < sch_ep->num_budget_microframes - 1; i++)
+				bwb_table[i] = bw_per_microframe;
+
+			/* last one <= bw_per_microframe */
+			bwb_table[i] = maxpkt * esit_pkts - i * bw_per_microframe;
 		}
-		sch_ep->bw_cost_per_microframe = maxpkt * sch_ep->pkts;
 	} else if (is_fs_or_ls(sch_ep->speed)) {
 		sch_ep->pkts = 1; /* at most one packet for each microframe */

 		/*
-		 * num_budget_microframes and cs_count will be updated when
+		 * @cs_count will be updated to add extra-cs when
 		 * check TT for INT_OUT_EP, ISOC/INT_IN_EP type
+		 * @maxpkt <= 1023;
 		 */
 		sch_ep->cs_count = DIV_ROUND_UP(maxpkt, FS_PAYLOAD_MAX);
 		sch_ep->num_budget_microframes = sch_ep->cs_count;
-		sch_ep->bw_cost_per_microframe = min_t(u32, maxpkt, FS_PAYLOAD_MAX);
+
+		/* init budget table */
+		if (ep_type == ISOC_OUT_EP) {
+			for (i = 0; i < sch_ep->cs_count - 1; i++)
+				bwb_table[i] = FS_PAYLOAD_MAX;
+
+			bwb_table[i] = maxpkt - i * FS_PAYLOAD_MAX;
+		} else if (ep_type == INT_OUT_EP) {
+			/* only first one used (maxpkt <= 64), others zero */
+			bwb_table[0] = maxpkt;
+		} else { /* INT_IN_EP or ISOC_IN_EP */
+			bwb_table[0] = 0; /* start split */
+			bwb_table[1] = 0; /* idle */
+			/*
+			 * @cs_count will be updated according to cs position
+			 * (add 1 or 2 extra-cs), but assume only first
+			 * @num_budget_microframes elements will be used later,
+			 * although in fact it does not (extra-cs budget many receive
+			 * some data for IN ep);
+			 * @cs_count is 1 for INT_IN_EP (maxpkt <= 64);
+			 */
+			for (i = 0; i < sch_ep->cs_count - 1; i++)
+				bwb_table[i + CS_OFFSET] = FS_PAYLOAD_MAX;
+
+			bwb_table[i + CS_OFFSET] = maxpkt - i * FS_PAYLOAD_MAX;
+			/* ss + idle */
+			sch_ep->num_budget_microframes += CS_OFFSET;
+		}
 	}
 }

@ -374,7 +434,7 @@ static u32 get_max_bw(struct mu3h_sch_bw_info *sch_bw,

 		for (j = 0; j < sch_ep->num_budget_microframes; j++) {
 			k = XHCI_MTK_BW_INDEX(base + j);
-			bw = sch_bw->bus_bw[k] + sch_ep->bw_cost_per_microframe;
+			bw = sch_bw->bus_bw[k] + sch_ep->bw_budget_table[j];
 			if (bw > max_bw)
 				max_bw = bw;
 		}
@ -382,56 +442,152 @@ static u32 get_max_bw(struct mu3h_sch_bw_info *sch_bw,
 	return max_bw;
 }

+/*
+ * for OUT: get first SS consumed bw;
+ * for IN: get first CS consumed bw;
+ */
+static u16 get_fs_bw(struct mu3h_sch_ep_info *sch_ep, int offset)
+{
+	struct mu3h_sch_tt *tt = sch_ep->sch_tt;
+	u16 fs_bw;
+
+	if (sch_ep->ep_type == ISOC_OUT_EP || sch_ep->ep_type == INT_OUT_EP)
+		fs_bw = tt->fs_bus_bw_out[XHCI_MTK_BW_INDEX(offset)];
+	else	/* skip ss + idle */
+		fs_bw = tt->fs_bus_bw_in[XHCI_MTK_BW_INDEX(offset + CS_OFFSET)];
+
+	return fs_bw;
+}
+
 static void update_bus_bw(struct mu3h_sch_bw_info *sch_bw,
 	struct mu3h_sch_ep_info *sch_ep, bool used)
 {
-	int bw_updated;
 	u32 base;
-	int i, j;
-
-	bw_updated = sch_ep->bw_cost_per_microframe * (used ? 1 : -1);
-
-	for (i = 0; i < sch_ep->num_esit; i++) {
-		base = sch_ep->offset + i * sch_ep->esit;
-		for (j = 0; j < sch_ep->num_budget_microframes; j++)
-			sch_bw->bus_bw[XHCI_MTK_BW_INDEX(base + j)] += bw_updated;
-	}
-}
-
-static int check_fs_bus_bw(struct mu3h_sch_ep_info *sch_ep, int offset)
-{
-	struct mu3h_sch_tt *tt = sch_ep->sch_tt;
-	u32 tmp;
-	int base;
 	int i, j, k;

 	for (i = 0; i < sch_ep->num_esit; i++) {
-		base = offset + i * sch_ep->esit;
-
-		/*
-		 * Compared with hs bus, no matter what ep type,
-		 * the hub will always delay one uframe to send data
-		 */
+		base = sch_ep->offset + i * sch_ep->esit;
 		for (j = 0; j < sch_ep->num_budget_microframes; j++) {
 			k = XHCI_MTK_BW_INDEX(base + j);
-			tmp = tt->fs_bus_bw[k] + sch_ep->bw_cost_per_microframe;
-			if (tmp > FS_PAYLOAD_MAX)
-				return -ESCH_BW_OVERFLOW;
+			if (used)
+				sch_bw->bus_bw[k] += sch_ep->bw_budget_table[j];
+			else
+				sch_bw->bus_bw[k] -= sch_ep->bw_budget_table[j];
 		}
 	}
+}
+
+static int check_ls_budget_microframes(struct mu3h_sch_ep_info *sch_ep, int offset)
+{
+	struct mu3h_sch_tt *tt = sch_ep->sch_tt;
+	int i;
+
+	if (sch_ep->speed != USB_SPEED_LOW)
+		return 0;
+
+	if (sch_ep->ep_type == INT_OUT_EP)
+		i = XHCI_MTK_BW_INDEX(offset);
+	else if (sch_ep->ep_type == INT_IN_EP)
+		i = XHCI_MTK_BW_INDEX(offset + CS_OFFSET); /* skip ss + idle */
+	else
+		return -EINVAL;
+
+	if (tt->ls_bus_bw[i] + sch_ep->maxpkt > LS_PAYLOAD_MAX)
+		return -ESCH_BW_OVERFLOW;
+
+	return 0;
+}
+
+static int check_fs_budget_microframes(struct mu3h_sch_ep_info *sch_ep, int offset)
+{
+	struct mu3h_sch_tt *tt = sch_ep->sch_tt;
+	u32 tmp;
+	int i, k;
+
+	/*
+	 * for OUT eps, will transfer exactly assigned length of data,
+	 * so can't allocate more than 188 bytes;
+	 * but it's not for IN eps, usually it can't receive full
+	 * 188 bytes in a uframe, if it not assign full 188 bytes,
+	 * can add another one;
+	 */
+	for (i = 0; i < sch_ep->num_budget_microframes; i++) {
+		k = XHCI_MTK_BW_INDEX(offset + i);
+		if (sch_ep->ep_type == ISOC_OUT_EP || sch_ep->ep_type == INT_OUT_EP)
+			tmp = tt->fs_bus_bw_out[k] + sch_ep->bw_budget_table[i];
+		else /* ep_type : ISOC IN / INTR IN */
+			tmp = tt->fs_bus_bw_in[k];
+
+		if (tmp > FS_PAYLOAD_MAX)
+			return -ESCH_BW_OVERFLOW;
+	}

 	return 0;
 }

-static int check_sch_tt(struct mu3h_sch_ep_info *sch_ep, u32 offset)
+static int check_fs_budget_frames(struct mu3h_sch_ep_info *sch_ep, int offset)
+{
+	struct mu3h_sch_tt *tt = sch_ep->sch_tt;
+	u32 head, tail;
+	int i, j, k;
+
+	/* bugdet scheduled may cross at most two fs frames */
+	j = XHCI_MTK_BW_INDEX(offset) / UFRAMES_PER_FRAME;
+	k = XHCI_MTK_BW_INDEX(offset + sch_ep->num_budget_microframes - 1) / UFRAMES_PER_FRAME;
+
+	if (j != k) {
+		head = tt->fs_frame_bw[j];
+		tail = tt->fs_frame_bw[k];
+	} else {
+		head = tt->fs_frame_bw[j];
+		tail = 0;
+	}
+
+	j = roundup(offset, UFRAMES_PER_FRAME);
+	for (i = 0; i < sch_ep->num_budget_microframes; i++) {
+		if ((offset + i) < j)
+			head += sch_ep->bw_budget_table[i];
+		else
+			tail += sch_ep->bw_budget_table[i];
+	}
+
+	if (head > FS_BW_BOUNDARY || tail > FS_BW_BOUNDARY)
+		return -ESCH_BW_OVERFLOW;
+
+	return 0;
+}
+
+static int check_fs_bus_bw(struct mu3h_sch_ep_info *sch_ep, int offset)
+{
+	int i, base;
+	int ret = 0;
+
+	for (i = 0; i < sch_ep->num_esit; i++) {
+		base = offset + i * sch_ep->esit;
+
+		ret = check_ls_budget_microframes(sch_ep, base);
+		if (ret)
+			goto err;
+
+		ret = check_fs_budget_microframes(sch_ep, base);
+		if (ret)
+			goto err;
+
+		ret = check_fs_budget_frames(sch_ep, base);
+		if (ret)
+			goto err;
+	}
+
+err:
+	return ret;
+}
+
+static int check_ss_and_cs(struct mu3h_sch_ep_info *sch_ep, u32 offset)
 {
 	u32 start_ss, last_ss;
 	u32 start_cs, last_cs;

-	if (!sch_ep->sch_tt)
-		return 0;
-
-	start_ss = offset % 8;
+	start_ss = offset % UFRAMES_PER_FRAME;

 	if (sch_ep->ep_type == ISOC_OUT_EP) {
 		last_ss = start_ss + sch_ep->cs_count - 1;
@ -444,6 +600,7 @@ static int check_sch_tt(struct mu3h_sch_ep_info *sch_ep, u32 offset)
 			return -ESCH_SS_Y6;

 	} else {
+		/* maxpkt <= 1023, cs <= 6 */
 		u32 cs_count = DIV_ROUND_UP(sch_ep->maxpkt, FS_PAYLOAD_MAX);

 		/*
@ -454,44 +611,164 @@ static int check_sch_tt(struct mu3h_sch_ep_info *sch_ep, u32 offset)
 			return -ESCH_SS_Y6;

 		/* one uframe for ss + one uframe for idle */
-		start_cs = (start_ss + 2) % 8;
+		start_cs = (start_ss + CS_OFFSET) % UFRAMES_PER_FRAME;
 		last_cs = start_cs + cs_count - 1;
-
 		if (last_cs > 7)
 			return -ESCH_CS_OVERFLOW;

+		/* add extra-cs */
+		cs_count += (last_cs == 7) ? 1 : 2;
 		if (cs_count > 7)
 			cs_count = 7; /* HW limit */

 		sch_ep->cs_count = cs_count;
-		/* ss, idle are ignored */
-		sch_ep->num_budget_microframes = cs_count;

-		/*
-		 * if interval=1, maxp >752, num_budge_micoframe is larger
-		 * than sch_ep->esit, will overstep boundary
-		 */
-		if (sch_ep->num_budget_microframes > sch_ep->esit)
-			sch_ep->num_budget_microframes = sch_ep->esit;
 	}

+	return 0;
+}
+
+/*
+ * when isoc-out transfers 188 bytes in a uframe, and send isoc/intr's
+ * ss token in the uframe, may cause 'bit stuff error' in downstream
+ * port;
+ * when isoc-out transfer less than 188 bytes in a uframe, shall send
+ * isoc-in's ss after isoc-out's ss (but hw can't ensure the sequence,
+ * so just avoid overlap).
+ */
+static int check_isoc_ss_overlap(struct mu3h_sch_ep_info *sch_ep, u32 offset)
+{
+	struct mu3h_sch_tt *tt = sch_ep->sch_tt;
+	int base;
+	int i, j, k;
+
+	if (!tt)
+		return 0;
+
+	for (i = 0; i < sch_ep->num_esit; i++) {
+		base = offset + i * sch_ep->esit;
+
+		if (sch_ep->ep_type == ISOC_OUT_EP) {
+			for (j = 0; j < sch_ep->num_budget_microframes; j++) {
+				k = XHCI_MTK_BW_INDEX(base + j + CS_OFFSET);
+				/* use cs to indicate existence of in-ss @(base+j) */
+				if (tt->fs_bus_bw_in[k])
+					return -ESCH_SS_OVERLAP;
+			}
+		} else if (sch_ep->ep_type == ISOC_IN_EP || sch_ep->ep_type == INT_IN_EP) {
+			k = XHCI_MTK_BW_INDEX(base);
+			/* only check IN's ss */
+			if (tt->fs_bus_bw_out[k])
+				return -ESCH_SS_OVERLAP;
+		}
+	}
+
+	return 0;
+}
+
+static int check_sch_tt_budget(struct mu3h_sch_ep_info *sch_ep, u32 offset)
+{
+	int ret;
+
+	ret = check_ss_and_cs(sch_ep, offset);
+	if (ret)
+		return ret;
+
+	ret = check_isoc_ss_overlap(sch_ep, offset);
+	if (ret)
+		return ret;
+
 	return check_fs_bus_bw(sch_ep, offset);
 }

+/* allocate microframes in the ls/fs frame */
+static int alloc_sch_portion_of_frame(struct mu3h_sch_ep_info *sch_ep)
+{
+	struct mu3h_sch_bw_info *sch_bw = sch_ep->bw_info;
+	const u32 bw_boundary = get_bw_boundary(sch_ep->speed);
+	u32 bw_max, fs_bw_min;
+	u32 offset, offset_min;
+	u16 fs_bw;
+	int frames;
+	int i, j;
+	int ret;
+
+	frames = sch_ep->esit / UFRAMES_PER_FRAME;
+
+	for (i = 0; i < UFRAMES_PER_FRAME; i++) {
+		fs_bw_min = FS_PAYLOAD_MAX;
+		offset_min = XHCI_MTK_MAX_ESIT;
+
+		for (j = 0; j < frames; j++) {
+			offset = (i + j * UFRAMES_PER_FRAME) % sch_ep->esit;
+
+			ret = check_sch_tt_budget(sch_ep, offset);
+			if (ret)
+				continue;
+
+			/* check hs bw domain */
+			bw_max = get_max_bw(sch_bw, sch_ep, offset);
+			if (bw_max > bw_boundary) {
+				ret = -ESCH_BW_OVERFLOW;
+				continue;
+			}
+
+			/* use best-fit between frames */
+			fs_bw = get_fs_bw(sch_ep, offset);
+			if (fs_bw < fs_bw_min) {
+				fs_bw_min = fs_bw;
+				offset_min = offset;
+			}
+
+			if (!fs_bw_min)
+				break;
+		}
+
+		/* use first-fit between microframes in a frame */
+		if (offset_min < XHCI_MTK_MAX_ESIT)
+			break;
+	}
+
+	if (offset_min == XHCI_MTK_MAX_ESIT)
+		return -ESCH_BW_OVERFLOW;
+
+	sch_ep->offset = offset_min;
+
+	return 0;
+}
+
 static void update_sch_tt(struct mu3h_sch_ep_info *sch_ep, bool used)
 {
 	struct mu3h_sch_tt *tt = sch_ep->sch_tt;
-	int bw_updated;
+	u16 *fs_bus_bw;
 	u32 base;
-	int i, j;
+	int i, j, k, f;

-	bw_updated = sch_ep->bw_cost_per_microframe * (used ? 1 : -1);
+	if (sch_ep->ep_type == ISOC_OUT_EP || sch_ep->ep_type == INT_OUT_EP)
+		fs_bus_bw = tt->fs_bus_bw_out;
+	else
+		fs_bus_bw = tt->fs_bus_bw_in;

 	for (i = 0; i < sch_ep->num_esit; i++) {
 		base = sch_ep->offset + i * sch_ep->esit;

-		for (j = 0; j < sch_ep->num_budget_microframes; j++)
-			tt->fs_bus_bw[XHCI_MTK_BW_INDEX(base + j)] += bw_updated;
+		for (j = 0; j < sch_ep->num_budget_microframes; j++) {
+			k = XHCI_MTK_BW_INDEX(base + j);
+			f = k / UFRAMES_PER_FRAME;
+			if (used) {
+				if (sch_ep->speed == USB_SPEED_LOW)
+					tt->ls_bus_bw[k] += (u8)sch_ep->bw_budget_table[j];
+
+				fs_bus_bw[k] += (u16)sch_ep->bw_budget_table[j];
+				tt->fs_frame_bw[f] += (u16)sch_ep->bw_budget_table[j];
+			} else {
+				if (sch_ep->speed == USB_SPEED_LOW)
+					tt->ls_bus_bw[k] -= (u8)sch_ep->bw_budget_table[j];
+
+				fs_bus_bw[k] -= (u16)sch_ep->bw_budget_table[j];
+				tt->fs_frame_bw[f] -= (u16)sch_ep->bw_budget_table[j];
+			}
+		}
 	}

 	if (used)
@ -513,7 +790,8 @@ static int load_ep_bw(struct mu3h_sch_bw_info *sch_bw,
 	return 0;
 }

-static int check_sch_bw(struct mu3h_sch_ep_info *sch_ep)
+/* allocate microframes for hs/ss/ssp */
+static int alloc_sch_microframes(struct mu3h_sch_ep_info *sch_ep)
 {
 	struct mu3h_sch_bw_info *sch_bw = sch_ep->bw_info;
 	const u32 bw_boundary = get_bw_boundary(sch_ep->speed);
@ -521,16 +799,12 @@ static int check_sch_bw(struct mu3h_sch_ep_info *sch_ep)
 	u32 worst_bw;
 	u32 min_bw = ~0;
 	int min_index = -1;
-	int ret = 0;

 	/*
 	 * Search through all possible schedule microframes.
 	 * and find a microframe where its worst bandwidth is minimum.
 	 */
 	for (offset = 0; offset < sch_ep->esit; offset++) {
-		ret = check_sch_tt(sch_ep, offset);
-		if (ret)
-			continue;

 		worst_bw = get_max_bw(sch_bw, sch_ep, offset);
 		if (worst_bw > bw_boundary)
@ -540,21 +814,29 @@ static int check_sch_bw(struct mu3h_sch_ep_info *sch_ep)
 			min_bw = worst_bw;
 			min_index = offset;
 		}
-
-		/* use first-fit for LS/FS */
-		if (sch_ep->sch_tt && min_index >= 0)
-			break;
-
-		if (min_bw == 0)
-			break;
 	}

 	if (min_index < 0)
-		return ret ? ret : -ESCH_BW_OVERFLOW;
+		return -ESCH_BW_OVERFLOW;

 	sch_ep->offset = min_index;

-	return load_ep_bw(sch_bw, sch_ep, true);
+	return 0;
+}
+
+static int check_sch_bw(struct mu3h_sch_ep_info *sch_ep)
+{
+	int ret;
+
+	if (sch_ep->sch_tt)
+		ret = alloc_sch_portion_of_frame(sch_ep);
+	else
+		ret = alloc_sch_microframes(sch_ep);
+
+	if (ret)
+		return ret;
+
+	return load_ep_bw(sch_ep->bw_info, sch_ep, true);
 }

 static void destroy_sch_ep(struct xhci_hcd_mtk *mtk, struct usb_device *udev,
@ -651,7 +933,7 @@ static int add_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev,

 	xhci_dbg(xhci, "%s %s\n", __func__, decode_ep(ep, udev->speed));

-	sch_ep = create_sch_ep(mtk, udev, ep);
+	sch_ep = create_sch_ep(mtk, udev, ep, ep_ctx);
 	if (IS_ERR_OR_NULL(sch_ep))
 		return -ENOMEM;

--- a/drivers/usb/host/xhci-mtk.h
+++ b/drivers/usb/host/xhci-mtk.h
@ -30,12 +30,21 @@
 #define XHCI_MTK_MAX_ESIT	(1 << 6)
 #define XHCI_MTK_BW_INDEX(x)	((x) & (XHCI_MTK_MAX_ESIT - 1))

+#define UFRAMES_PER_FRAME	8
+#define XHCI_MTK_FRAMES_CNT	(XHCI_MTK_MAX_ESIT / UFRAMES_PER_FRAME)
+
 /**
- * @fs_bus_bw: array to keep track of bandwidth already used for FS
+ * @fs_bus_bw_out: save bandwidth used by FS/LS OUT eps in each uframes
+ * @fs_bus_bw_in: save bandwidth used by FS/LS IN eps in each uframes
+ * @ls_bus_bw: save bandwidth used by LS eps in each uframes
+ * @fs_frame_bw: save bandwidth used by FS/LS eps in each FS frames
 * @ep_list: Endpoints using this TT
 */
 struct mu3h_sch_tt {
-	u32 fs_bus_bw[XHCI_MTK_MAX_ESIT];
+	u16 fs_bus_bw_out[XHCI_MTK_MAX_ESIT];
+	u16 fs_bus_bw_in[XHCI_MTK_MAX_ESIT];
+	u8 ls_bus_bw[XHCI_MTK_MAX_ESIT];
+	u16 fs_frame_bw[XHCI_MTK_FRAMES_CNT];
 	struct list_head ep_list;
 };

@ -58,7 +67,6 @@ struct mu3h_sch_bw_info {
 * @num_esit: number of @esit in a period
 * @num_budget_microframes: number of continuous uframes
 *		(@repeat==1) scheduled within the interval
- * @bw_cost_per_microframe: bandwidth cost per microframe
 * @hentry: hash table entry
 * @endpoint: linked into bandwidth domain which it belongs to
 * @tt_endpoint: linked into mu3h_sch_tt's list which it belongs to
@ -83,12 +91,12 @@ struct mu3h_sch_bw_info {
 *		times; 1: distribute the (bMaxBurst+1)*(Mult+1) packets
 *		according to @pkts and @repeat. normal mode is used by
 *		default
+ * @bw_budget_table: table to record bandwidth budget per microframe
 */
 struct mu3h_sch_ep_info {
 	u32 esit;
 	u32 num_esit;
 	u32 num_budget_microframes;
-	u32 bw_cost_per_microframe;
 	struct list_head endpoint;
 	struct hlist_node hentry;
 	struct list_head tt_endpoint;
@ -108,6 +116,7 @@ struct mu3h_sch_ep_info {
 	u32 pkts;
 	u32 cs_count;
 	u32 burst_mode;
+	u32 bw_budget_table[];
 };

 #define MU3C_U3_PORT_MAX 4
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@ -535,6 +535,8 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
 	/* xHC spec requires PCI devices to support D3hot and D3cold */
 	if (xhci->hci_version >= 0x120)
 		xhci->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW;
+	else if (pdev->vendor == PCI_VENDOR_ID_AMD && xhci->hci_version >= 0x110)
+		xhci->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW;

 	if (xhci->quirks & XHCI_RESET_ON_RESUME)
 		xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
@ -693,7 +695,9 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	/* USB-2 and USB-3 roothubs initialized, allow runtime pm suspend */
 	pm_runtime_put_noidle(&dev->dev);

-	if (xhci->quirks & XHCI_DEFAULT_PM_RUNTIME_ALLOW)
+	if (pci_choose_state(dev, PMSG_SUSPEND) == PCI_D0)
+		pm_runtime_forbid(&dev->dev);
+	else if (xhci->quirks & XHCI_DEFAULT_PM_RUNTIME_ALLOW)
 		pm_runtime_allow(&dev->dev);

 	dma_set_max_seg_size(&dev->dev, UINT_MAX);
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@ -458,23 +458,38 @@ static int __maybe_unused xhci_plat_resume(struct device *dev)
 	int ret;

 	if (!device_may_wakeup(dev) && (xhci->quirks & XHCI_SUSPEND_RESUME_CLKS)) {
-		clk_prepare_enable(xhci->clk);
-		clk_prepare_enable(xhci->reg_clk);
+		ret = clk_prepare_enable(xhci->clk);
+		if (ret)
+			return ret;
+
+		ret = clk_prepare_enable(xhci->reg_clk);
+		if (ret) {
+			clk_disable_unprepare(xhci->clk);
+			return ret;
+		}
 	}

 	ret = xhci_priv_resume_quirk(hcd);
 	if (ret)
-		return ret;
+		goto disable_clks;

 	ret = xhci_resume(xhci, PMSG_RESUME);
 	if (ret)
-		return ret;
+		goto disable_clks;

 	pm_runtime_disable(dev);
 	pm_runtime_set_active(dev);
 	pm_runtime_enable(dev);

 	return 0;
+
+disable_clks:
+	if (!device_may_wakeup(dev) && (xhci->quirks & XHCI_SUSPEND_RESUME_CLKS)) {
+		clk_disable_unprepare(xhci->clk);
+		clk_disable_unprepare(xhci->reg_clk);
+	}
+
+	return ret;
 }

 static int __maybe_unused xhci_plat_runtime_suspend(struct device *dev)
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@ -144,7 +144,7 @@ static void next_trb(struct xhci_hcd *xhci,
 		struct xhci_segment **seg,
 		union xhci_trb **trb)
 {
-	if (trb_is_link(*trb)) {
+	if (trb_is_link(*trb) || last_trb_on_seg(*seg, *trb)) {
 		*seg = (*seg)->next;
 		*trb = ((*seg)->trbs);
 	} else {
@ -450,8 +450,9 @@ static int xhci_abort_cmd_ring(struct xhci_hcd *xhci, unsigned long flags)
 	 * In the future we should distinguish between -ENODEV and -ETIMEDOUT
 	 * and try to recover a -ETIMEDOUT with a host controller reset.
 	 */
-	ret = xhci_handshake(&xhci->op_regs->cmd_ring,
-			CMD_RING_RUNNING, 0, 5 * 1000 * 1000);
+	ret = xhci_handshake_check_state(xhci, &xhci->op_regs->cmd_ring,
+			CMD_RING_RUNNING, 0, 5 * 1000 * 1000,
+			XHCI_STATE_REMOVING);
 	if (ret < 0) {
 		xhci_err(xhci, "Abort failed to stop command ring: %d\n", ret);
 		xhci_halt(xhci);
@ -1879,7 +1880,6 @@ static void handle_port_status(struct xhci_hcd *xhci,
 	if ((port_id <= 0) || (port_id > max_ports)) {
 		xhci_warn(xhci, "Port change event with invalid port ID %d\n",
 			  port_id);
-		inc_deq(xhci, ir->event_ring);
 		return;
 	}

@ -1906,7 +1906,7 @@ static void handle_port_status(struct xhci_hcd *xhci,
 	xhci_dbg(xhci, "Port change event, %d-%d, id %d, portsc: 0x%x\n",
 		 hcd->self.busnum, hcd_portnum + 1, port_id, portsc);

-	trace_xhci_handle_port_status(hcd_portnum, portsc);
+	trace_xhci_handle_port_status(port, portsc);

 	if (hcd->state == HC_STATE_SUSPENDED) {
 		xhci_dbg(xhci, "resume root hub\n");
@ -2007,8 +2007,6 @@ static void handle_port_status(struct xhci_hcd *xhci,
 	}

 cleanup:
-	/* Update event ring dequeue pointer before dropping the lock */
-	inc_deq(xhci, ir->event_ring);

 	/* Don't make the USB core poll the roothub if we got a bad port status
 	 * change event.  Besides, at that point we can't tell which roothub
@ -2884,13 +2882,6 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 			trb_comp_code != COMP_MISSED_SERVICE_ERROR &&
 			trb_comp_code != COMP_NO_PING_RESPONSE_ERROR;

-		/*
-		 * Do not update event ring dequeue pointer if we're in a loop
-		 * processing missed tds.
-		 */
-		if (!handling_skipped_tds)
-			inc_deq(xhci, ir->event_ring);
-
 	/*
 	 * If ep->skip is set, it means there are missed tds on the
 	 * endpoint ring need to take care of.
@ -2922,9 +2913,7 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 static int xhci_handle_event(struct xhci_hcd *xhci, struct xhci_interrupter *ir)
 {
 	union xhci_trb *event;
-	int update_ptrs = 1;
 	u32 trb_type;
-	int ret;

 	/* Event ring hasn't been allocated yet. */
 	if (!ir || !ir->event_ring || !ir->event_ring->dequeue) {
@ -2954,12 +2943,9 @@ static int xhci_handle_event(struct xhci_hcd *xhci, struct xhci_interrupter *ir)
 		break;
 	case TRB_PORT_STATUS:
 		handle_port_status(xhci, ir, event);
-		update_ptrs = 0;
 		break;
 	case TRB_TRANSFER:
-		ret = handle_tx_event(xhci, ir, &event->trans_event);
-		if (ret >= 0)
-			update_ptrs = 0;
+		handle_tx_event(xhci, ir, &event->trans_event);
 		break;
 	case TRB_DEV_NOTE:
 		handle_device_notification(xhci, event);
@ -2979,9 +2965,8 @@ static int xhci_handle_event(struct xhci_hcd *xhci, struct xhci_interrupter *ir)
 		return 0;
 	}

-	if (update_ptrs)
-		/* Update SW event ring dequeue pointer */
-		inc_deq(xhci, ir->event_ring);
+	/* Update SW event ring dequeue pointer */
+	inc_deq(xhci, ir->event_ring);

 	/* Are there more items on the event ring?  Caller will call us again to
 	 * check.
@ -3013,13 +2998,12 @@ static void xhci_update_erst_dequeue(struct xhci_hcd *xhci,
 		 * Per 4.9.4, Software writes to the ERDP register shall
 		 * always advance the Event Ring Dequeue Pointer value.
 		 */
-		if ((temp_64 & (u64) ~ERST_PTR_MASK) ==
-				((u64) deq & (u64) ~ERST_PTR_MASK))
+		if ((temp_64 & ERST_PTR_MASK) == (deq & ERST_PTR_MASK))
 			return;

 		/* Update HC event ring dequeue pointer */
-		temp_64 &= ERST_DESI_MASK;
-		temp_64 |= ((u64) deq & (u64) ~ERST_PTR_MASK);
+		temp_64 = ir->event_ring->deq_seg->num & ERST_DESI_MASK;
+		temp_64 |= deq & ERST_PTR_MASK;
 	}

 	/* Clear the event handler busy flag (RW1C) */
--- a/drivers/usb/host/xhci-trace.h
+++ b/drivers/usb/host/xhci-trace.h
@ -509,35 +509,38 @@ DEFINE_EVENT(xhci_log_ring, xhci_inc_deq,
 );

 DECLARE_EVENT_CLASS(xhci_log_portsc,
-		    TP_PROTO(u32 portnum, u32 portsc),
-		    TP_ARGS(portnum, portsc),
+		    TP_PROTO(struct xhci_port *port, u32 portsc),
+		    TP_ARGS(port, portsc),
 		    TP_STRUCT__entry(
+				     __field(u32, busnum)
 				     __field(u32, portnum)
 				     __field(u32, portsc)
 				     ),
 		    TP_fast_assign(
-				   __entry->portnum = portnum;
+				   __entry->busnum = port->rhub->hcd->self.busnum;
+				   __entry->portnum = port->hcd_portnum;
 				   __entry->portsc = portsc;
 				   ),
-		    TP_printk("port-%d: %s",
+		    TP_printk("port %d-%d: %s",
+			      __entry->busnum,
 			      __entry->portnum,
 			      xhci_decode_portsc(__get_buf(XHCI_MSG_MAX), __entry->portsc)
 			      )
 );

 DEFINE_EVENT(xhci_log_portsc, xhci_handle_port_status,
-	     TP_PROTO(u32 portnum, u32 portsc),
-	     TP_ARGS(portnum, portsc)
+	     TP_PROTO(struct xhci_port *port, u32 portsc),
+	     TP_ARGS(port, portsc)
 );

 DEFINE_EVENT(xhci_log_portsc, xhci_get_port_status,
-	     TP_PROTO(u32 portnum, u32 portsc),
-	     TP_ARGS(portnum, portsc)
+	     TP_PROTO(struct xhci_port *port, u32 portsc),
+	     TP_ARGS(port, portsc)
 );

 DEFINE_EVENT(xhci_log_portsc, xhci_hub_status_data,
-	     TP_PROTO(u32 portnum, u32 portsc),
-	     TP_ARGS(portnum, portsc)
+	     TP_PROTO(struct xhci_port *port, u32 portsc),
+	     TP_ARGS(port, portsc)
 );

 DECLARE_EVENT_CLASS(xhci_log_doorbell,
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@ -81,6 +81,29 @@ int xhci_handshake(void __iomem *ptr, u32 mask, u32 done, u64 timeout_us)
 	return ret;
 }

+/*
+ * xhci_handshake_check_state - same as xhci_handshake but takes an additional
+ * exit_state parameter, and bails out with an error immediately when xhc_state
+ * has exit_state flag set.
+ */
+int xhci_handshake_check_state(struct xhci_hcd *xhci, void __iomem *ptr,
+		u32 mask, u32 done, int usec, unsigned int exit_state)
+{
+	u32	result;
+	int	ret;
+
+	ret = readl_poll_timeout_atomic(ptr, result,
+				(result & mask) == done ||
+				result == U32_MAX ||
+				xhci->xhc_state & exit_state,
+				1, usec);
+
+	if (result == U32_MAX || xhci->xhc_state & exit_state)
+		return -ENODEV;
+
+	return ret;
+}
+
 /*
 * Disable interrupts and begin the xHCI halting process.
 */
@ -201,7 +224,8 @@ int xhci_reset(struct xhci_hcd *xhci, u64 timeout_us)
 	if (xhci->quirks & XHCI_INTEL_HOST)
 		udelay(1000);

-	ret = xhci_handshake(&xhci->op_regs->command, CMD_RESET, 0, timeout_us);
+	ret = xhci_handshake_check_state(xhci, &xhci->op_regs->command,
+				CMD_RESET, 0, timeout_us, XHCI_STATE_REMOVING);
 	if (ret)
 		return ret;

@ -520,7 +544,7 @@ int xhci_run(struct usb_hcd *hcd)
 	xhci_dbg_trace(xhci, trace_xhci_dbg_init, "xhci_run");

 	temp_64 = xhci_read_64(xhci, &ir->ir_set->erst_dequeue);
-	temp_64 &= ~ERST_PTR_MASK;
+	temp_64 &= ERST_PTR_MASK;
 	xhci_dbg_trace(xhci, trace_xhci_dbg_init,
 			"ERST deq = 64'h%0lx", (long unsigned int) temp_64);

@ -968,6 +992,7 @@ int xhci_resume(struct xhci_hcd *xhci, pm_message_t msg)
 	int			retval = 0;
 	bool			comp_timer_running = false;
 	bool			pending_portevent = false;
+	bool			suspended_usb3_devs = false;
 	bool			reinit_xhc = false;

 	if (!hcd->state)
@ -1115,10 +1140,17 @@ int xhci_resume(struct xhci_hcd *xhci, pm_message_t msg)
 		/*
 		 * Resume roothubs only if there are pending events.
 		 * USB 3 devices resend U3 LFPS wake after a 100ms delay if
-		 * the first wake signalling failed, give it that chance.
+		 * the first wake signalling failed, give it that chance if
+		 * there are suspended USB 3 devices.
 		 */
+		if (xhci->usb3_rhub.bus_state.suspended_ports ||
+		    xhci->usb3_rhub.bus_state.bus_suspended)
+			suspended_usb3_devs = true;
+
 		pending_portevent = xhci_pending_portevent(xhci);
-		if (!pending_portevent && msg.event == PM_EVENT_AUTO_RESUME) {
+
+		if (suspended_usb3_devs && !pending_portevent &&
+		    msg.event == PM_EVENT_AUTO_RESUME) {
 			msleep(120);
 			pending_portevent = xhci_pending_portevent(xhci);
 		}
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@ -525,7 +525,7 @@ struct xhci_intr_reg {
 * a work queue (or delayed service routine)?
 */
 #define ERST_EHB		(1 << 3)
-#define ERST_PTR_MASK		(0xf)
+#define ERST_PTR_MASK		(GENMASK_ULL(63, 4))

 /**
 * struct xhci_run_regs
@ -558,33 +558,6 @@ struct xhci_doorbell_array {
 #define DB_VALUE(ep, stream)	((((ep) + 1) & 0xff) | ((stream) << 16))
 #define DB_VALUE_HOST		0x00000000

-/**
- * struct xhci_protocol_caps
- * @revision:		major revision, minor revision, capability ID,
- *			and next capability pointer.
- * @name_string:	Four ASCII characters to say which spec this xHC
- *			follows, typically "USB ".
- * @port_info:		Port offset, count, and protocol-defined information.
- */
-struct xhci_protocol_caps {
-	u32	revision;
-	u32	name_string;
-	u32	port_info;
-};
-
-#define	XHCI_EXT_PORT_MAJOR(x)	(((x) >> 24) & 0xff)
-#define	XHCI_EXT_PORT_MINOR(x)	(((x) >> 16) & 0xff)
-#define	XHCI_EXT_PORT_PSIC(x)	(((x) >> 28) & 0x0f)
-#define	XHCI_EXT_PORT_OFF(x)	((x) & 0xff)
-#define	XHCI_EXT_PORT_COUNT(x)	(((x) >> 8) & 0xff)
-
-#define	XHCI_EXT_PORT_PSIV(x)	(((x) >> 0) & 0x0f)
-#define	XHCI_EXT_PORT_PSIE(x)	(((x) >> 4) & 0x03)
-#define	XHCI_EXT_PORT_PLT(x)	(((x) >> 6) & 0x03)
-#define	XHCI_EXT_PORT_PFD(x)	(((x) >> 8) & 0x01)
-#define	XHCI_EXT_PORT_LP(x)	(((x) >> 14) & 0x03)
-#define	XHCI_EXT_PORT_PSIM(x)	(((x) >> 16) & 0xffff)
-
 #define PLT_MASK        (0x03 << 6)
 #define PLT_SYM         (0x00 << 6)
 #define PLT_ASYM_RX     (0x02 << 6)
@ -1545,6 +1518,7 @@ struct xhci_segment {
 	union xhci_trb		*trbs;
 	/* private to HCD */
 	struct xhci_segment	*next;
+	unsigned int		num;
 	dma_addr_t		dma;
 	/* Max packet sized bounce buffer for td-fragmant alignment */
 	dma_addr_t		bounce_dma;
@ -1669,12 +1643,8 @@ struct urb_priv {
 	struct	xhci_td	td[] __counted_by(num_tds);
 };

-/*
- * Each segment table entry is 4*32bits long.  1K seems like an ok size:
- * (1K bytes * 8bytes/bit) / (4*32 bits) = 64 segment entries in the table,
- * meaning 64 ring segments.
- * Initial allocated size of the ERST, in number of entries */
-#define	ERST_NUM_SEGS	1
+/* Reasonable limit for number of Event Ring segments (spec allows 32k) */
+#define	ERST_MAX_SEGS	2
 /* Poll every 60 seconds */
 #define	POLL_TIMEOUT	60
 /* Stop endpoint command timeout (secs) for URB cancellation watchdog timer */
@ -2078,13 +2048,8 @@ struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci,
 void xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring);
 int xhci_ring_expansion(struct xhci_hcd *xhci, struct xhci_ring *ring,
 		unsigned int num_trbs, gfp_t flags);
-int xhci_alloc_erst(struct xhci_hcd *xhci,
-		struct xhci_ring *evt_ring,
-		struct xhci_erst *erst,
-		gfp_t flags);
 void xhci_initialize_ring_info(struct xhci_ring *ring,
 			unsigned int cycle_state);
-void xhci_free_erst(struct xhci_hcd *xhci, struct xhci_erst *erst);
 void xhci_free_endpoint_ring(struct xhci_hcd *xhci,
 		struct xhci_virt_device *virt_dev,
 		unsigned int ep_index);
@ -2119,6 +2084,8 @@ void xhci_free_container_ctx(struct xhci_hcd *xhci,
 /* xHCI host controller glue */
 typedef void (*xhci_get_quirks_t)(struct device *, struct xhci_hcd *);
 int xhci_handshake(void __iomem *ptr, u32 mask, u32 done, u64 timeout_us);
+int xhci_handshake_check_state(struct xhci_hcd *xhci, void __iomem *ptr,
+		u32 mask, u32 done, int usec, unsigned int exit_state);
 void xhci_quiesce(struct xhci_hcd *xhci);
 int xhci_halt(struct xhci_hcd *xhci);
 int xhci_start(struct xhci_hcd *xhci);
--- a/drivers/usb/misc/Kconfig
+++ b/drivers/usb/misc/Kconfig
@ -165,6 +165,19 @@ config APPLE_MFI_FASTCHARGE

 	  It is safe to say M here.

+config USB_LJCA
+	tristate "Intel La Jolla Cove Adapter support"
+	select AUXILIARY_BUS
+	depends on USB && ACPI
+	help
+	  This adds support for Intel La Jolla Cove USB-I2C/SPI/GPIO
+	  Master Adapter (LJCA). Additional drivers such as I2C_LJCA,
+	  GPIO_LJCA and SPI_LJCA must be enabled in order to use the
+	  functionality of the device.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called usb-ljca.
+
 source "drivers/usb/misc/sisusbvga/Kconfig"

 config USB_LD
--- a/Show More
+++ b/Show More