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phy: rockchip: add usbdp combo phy driver

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This adds a new USBDP combo PHY with Samsung IP block driver.

The driver get lane mux and mapping info in 2 ways, supporting
DisplayPort alternate mode or parsing from DT. When parsing from DT,
the property "rockchip,dp-lane-mux" provide the DP mux and mapping
info. This is needed when the PHY is not used with TypeC Alt-Mode.
For example if the USB3 interface of the PHY is connected to a USB
Type A connector and the DP interface is connected to a DisplayPort
connector.

When do DP link training, need to set lane number, link rate, swing,
and pre-emphasis via PHY configure interface.

Co-developed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Co-developed-by: Zhang Yubing <yubing.zhang@rock-chips.com>
Signed-off-by: Zhang Yubing <yubing.zhang@rock-chips.com>
Co-developed-by: Frank Wang <frank.wang@rock-chips.com>
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20240408225109.128953-3-sebastian.reichel@collabora.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Sebastian Reichel 2024-04-09 00:50:29 +02:00 committed by Vinod Koul
parent a75d8056e9
commit 2f70bbddeb
3 changed files with 1621 additions and 0 deletions
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12
drivers/phy/rockchip/Kconfig
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@ -115,3 +115,15 @@ config PHY_ROCKCHIP_USB
select GENERIC_PHY
help
Enable this to support the Rockchip USB 2.0 PHY.
config PHY_ROCKCHIP_USBDP
tristate "Rockchip USBDP COMBO PHY Driver"
depends on ARCH_ROCKCHIP && OF
select GENERIC_PHY
select TYPEC
help
Enable this to support the Rockchip USB3.0/DP combo PHY with
Samsung IP block. This is required for USB3 support on RK3588.
To compile this driver as a module, choose M here: the module
will be called phy-rockchip-usbdp

1
drivers/phy/rockchip/Makefile
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@ -12,3 +12,4 @@ obj-$(CONFIG_PHY_ROCKCHIP_SAMSUNG_HDPTX) += phy-rockchip-samsung-hdptx.o
obj-$(CONFIG_PHY_ROCKCHIP_SNPS_PCIE3) += phy-rockchip-snps-pcie3.o
obj-$(CONFIG_PHY_ROCKCHIP_TYPEC) += phy-rockchip-typec.o
obj-$(CONFIG_PHY_ROCKCHIP_USB) += phy-rockchip-usb.o
obj-$(CONFIG_PHY_ROCKCHIP_USBDP) += phy-rockchip-usbdp.o

1608
drivers/phy/rockchip/phy-rockchip-usbdp.c Normal file
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