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dt-bindings: fuse: Move renesas,rcar-{efuse,otp} to nvmem

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The R-Car E-FUSE blocks can be modelled better using the nvmem
framework.

Replace the R-Car V3U example by an R-Car S4-8 ES1.2 example, to show
the definition of nvmem cells.  While at it, drop unneeded labels from
the examples, and fix indentation.

Add an entry to the MAINTAINERS file.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20241030140315.40562-2-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Geert Uytterhoeven 2024-10-30 14:03:09 +00:00 committed by Greg Kroah-Hartman
parent eb33da0de0
commit 2aea0d17ff
3 changed files with 35 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
Documentation/devicetree/bindings/fuse/renesas,rcar-efuse.yaml → Documentation/devicetree/bindings/nvmem/renesas,rcar-efuse.yaml
View File

@ -1,7 +1,7 @@
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/fuse/renesas,rcar-efuse.yaml#
$id: http://devicetree.org/schemas/nvmem/renesas,rcar-efuse.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: R-Car E-FUSE connected to PFC
@ -13,6 +13,9 @@ description:
The E-FUSE is a type of non-volatile memory, which is accessible through the
Pin Function Controller (PFC) on some R-Car Gen4 SoCs.
allOf:
- $ref: nvmem.yaml#
properties:
compatible:
enum:
@ -39,17 +42,27 @@ required:
- power-domains
- resets
additionalProperties: false
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/clock/r8a779a0-cpg-mssr.h>
#include <dt-bindings/power/r8a779a0-sysc.h>
#include <dt-bindings/clock/r8a779f0-cpg-mssr.h>
#include <dt-bindings/power/r8a779f0-sysc.h>
fuse: fuse@e6078800 {
compatible = "renesas,r8a779a0-efuse";
reg = <0xe6078800 0x100>;
clocks = <&cpg CPG_MOD 916>;
power-domains = <&sysc R8A779A0_PD_ALWAYS_ON>;
resets = <&cpg 916>;
fuse@e6078800 {
compatible = "renesas,r8a779f0-efuse";
reg = <0xe6078800 0x200>;
clocks = <&cpg CPG_MOD 915>;
power-domains = <&sysc R8A779F0_PD_ALWAYS_ON>;
resets = <&cpg 915>;
nvmem-layout {
compatible = "fixed-layout";
#address-cells = <1>;
#size-cells = <1>;
calib@144 {
reg = <0x144 0x08>;
};
};
};

17
Documentation/devicetree/bindings/fuse/renesas,rcar-otp.yaml → Documentation/devicetree/bindings/nvmem/renesas,rcar-otp.yaml
View File

@ -1,7 +1,7 @@
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/fuse/renesas,rcar-otp.yaml#
$id: http://devicetree.org/schemas/nvmem/renesas,rcar-otp.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: R-Car E-FUSE connected to OTP_MEM
@ -13,6 +13,9 @@ description:
The E-FUSE is a type of non-volatile memory, which is accessible through the
One-Time Programmable Memory (OTP_MEM) module on some R-Car Gen4 SoCs.
allOf:
- $ref: nvmem.yaml#
properties:
compatible:
enum:
@ -22,17 +25,19 @@ properties:
reg:
items:
- description: OTP_MEM_0
- description: OTP_MEM_1
- description: OTP_MEM_1.
The addresses of cells defined under the optional nvmem-layout
subnode are relative to this register bank.
required:
- compatible
- reg
additionalProperties: false
unevaluatedProperties: false
examples:
- |
otp: otp@e61be000 {
compatible = "renesas,r8a779g0-otp";
reg = <0xe61be000 0x1000>, <0xe61bf000 0x1000>;
otp@e61be000 {
compatible = "renesas,r8a779g0-otp";
reg = <0xe61be000 0x1000>, <0xe61bf000 0x1000>;
};

1
MAINTAINERS
View File

@ -2922,6 +2922,7 @@ Q: http://patchwork.kernel.org/project/linux-renesas-soc/list/
C: irc://irc.libera.chat/renesas-soc
T: git git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel.git next
F: Documentation/devicetree/bindings/hwinfo/renesas,prr.yaml
F: Documentation/devicetree/bindings/nvmem/renesas,*
F: Documentation/devicetree/bindings/soc/renesas/
F: arch/arm/boot/dts/renesas/
F: arch/arm/configs/shmobile_defconfig