Commit 2f70bbdd authored by Sebastian Reichel's avatar Sebastian Reichel Committed by Vinod Koul
Browse files

phy: rockchip: add usbdp combo phy driver 



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: default avatarHeiko Stuebner <heiko@sntech.de>
Signed-off-by: default avatarHeiko Stuebner <heiko@sntech.de>
Co-developed-by: default avatarZhang Yubing <yubing.zhang@rock-chips.com>
Signed-off-by: default avatarZhang Yubing <yubing.zhang@rock-chips.com>
Co-developed-by: default avatarFrank Wang <frank.wang@rock-chips.com>
Signed-off-by: default avatarFrank Wang <frank.wang@rock-chips.com>
Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20240408225109.128953-3-sebastian.reichel@collabora.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent a75d8056

drivers/phy/rockchip/Kconfig

+12 −0
Original line number Diff line number Diff line
@@ -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

drivers/phy/rockchip/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -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

drivers/phy/rockchip/phy-rockchip-usbdp.c

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File added.

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