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phy: realtek: usb: Add driver for the Realtek SoC USB 2.0 PHY

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Realtek DHC (digital home center) RTD SoCs support DWC3 XHCI USB
controller. Added the driver to drive the USB 2.0 PHY transceivers.

Signed-off-by: Stanley Chang <stanley_chang@realtek.com>
Link: https://lore.kernel.org/r/20230725033318.8361-2-stanley_chang@realtek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Stanley Chang 2023-07-25 11:31:53 +08:00 committed by Greg Kroah-Hartman
parent a08799cf17
commit 134e6d25f6
5 changed files with 1347 additions and 0 deletions
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1
drivers/phy/Kconfig
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@ -87,6 +87,7 @@ source "drivers/phy/motorola/Kconfig"
source "drivers/phy/mscc/Kconfig"
source "drivers/phy/qualcomm/Kconfig"
source "drivers/phy/ralink/Kconfig"
source "drivers/phy/realtek/Kconfig"
source "drivers/phy/renesas/Kconfig"
source "drivers/phy/rockchip/Kconfig"
source "drivers/phy/samsung/Kconfig"

1
drivers/phy/Makefile
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@ -26,6 +26,7 @@ obj-y += allwinner/ \
mscc/ \
qualcomm/ \
ralink/ \
realtek/ \
renesas/ \
rockchip/ \
samsung/ \

14
drivers/phy/realtek/Kconfig Normal file
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@ -0,0 +1,14 @@
# SPDX-License-Identifier: GPL-2.0
#
# Phy drivers for Realtek platforms
#
config PHY_RTK_RTD_USB2PHY
tristate "Realtek RTD USB2 PHY Transceiver Driver"
depends on USB_SUPPORT
select GENERIC_PHY
select USB_PHY
help
Enable this to support Realtek SoC USB2 phy transceiver.
The DHC (digital home center) RTD series SoCs used the Synopsys
DWC3 USB IP. This driver will do the PHY initialization
of the parameters.

2
drivers/phy/realtek/Makefile Normal file
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@ -0,0 +1,2 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_PHY_RTK_RTD_USB2PHY) += phy-rtk-usb2.o

1329
drivers/phy/realtek/phy-rtk-usb2.c Normal file
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