This is merely a dummy driver that makes sure the DWC3 XHCI driver finds its reset and PHY controllers. We rely on iBoot to set up the PHY for us.
Signed-off-by: Mark Kettenis kettenis@openbsd.org --- MAINTAINERS | 1 + arch/arm/Kconfig | 1 + configs/apple_m1_defconfig | 1 + drivers/phy/Kconfig | 10 +++++++ drivers/phy/Makefile | 1 + drivers/phy/phy-apple-atc.c | 56 +++++++++++++++++++++++++++++++++++++ 6 files changed, 70 insertions(+) create mode 100644 drivers/phy/phy-apple-atc.c
diff --git a/MAINTAINERS b/MAINTAINERS index 2477923a52..ebe7305395 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -123,6 +123,7 @@ F: configs/apple_m1_defconfig F: drivers/iommu/apple_dart.c F: drivers/nvme/nvme_apple.c F: drivers/pci/pcie_apple.c +F: drivers/phy/phy-apple-atc.c F: drivers/pinctrl/pinctrl-apple.c F: drivers/watchdog/apple_wdt.c F: include/configs/apple.h diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 99264a6478..bcfce8ed86 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1011,6 +1011,7 @@ config ARCH_APPLE select OF_BOARD_SETUP select OF_CONTROL select PCI + select PHY select PINCTRL select POSITION_INDEPENDENT select POWER_DOMAIN diff --git a/configs/apple_m1_defconfig b/configs/apple_m1_defconfig index 755560971e..d58a9030db 100644 --- a/configs/apple_m1_defconfig +++ b/configs/apple_m1_defconfig @@ -16,6 +16,7 @@ CONFIG_NVME_APPLE=y CONFIG_USB_XHCI_HCD=y CONFIG_USB_XHCI_DWC3=y CONFIG_USB_XHCI_PCI=y +CONFIG_USB_DWC3=y CONFIG_USB_KEYBOARD=y CONFIG_SYS_WHITE_ON_BLACK=y CONFIG_NO_FB_CLEAR=y diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig index 7a2d54f71d..8ac5769ed9 100644 --- a/drivers/phy/Kconfig +++ b/drivers/phy/Kconfig @@ -70,6 +70,16 @@ config AB8500_USB_PHY help Support for the USB OTG PHY in ST-Ericsson AB8500.
+config APPLE_ATCPHY + bool "Apple Type-C PHY Driver" + depends on PHY && ARCH_APPLE + default y + help + Support for the Apple Type-C PHY. + + This is a dummy driver since the PHY is initialized + sufficiently by previous stage firmware. + config BCM6318_USBH_PHY bool "BCM6318 USBH PHY support" depends on PHY && ARCH_BMIPS diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile index aca365d219..5d4de86e71 100644 --- a/drivers/phy/Makefile +++ b/drivers/phy/Makefile @@ -12,6 +12,7 @@ obj-$(CONFIG_$(SPL_)PHY) += phy-uclass.o obj-$(CONFIG_$(SPL_)NOP_PHY) += nop-phy.o obj-$(CONFIG_MIPI_DPHY_HELPERS) += phy-core-mipi-dphy.o obj-$(CONFIG_AB8500_USB_PHY) += phy-ab8500-usb.o +obj-$(CONFIG_APPLE_ATCPHY) += phy-apple-atc.o obj-$(CONFIG_BCM6318_USBH_PHY) += bcm6318-usbh-phy.o obj-$(CONFIG_BCM6348_USBH_PHY) += bcm6348-usbh-phy.o obj-$(CONFIG_BCM6358_USBH_PHY) += bcm6358-usbh-phy.o diff --git a/drivers/phy/phy-apple-atc.c b/drivers/phy/phy-apple-atc.c new file mode 100644 index 0000000000..15c5b8a1c2 --- /dev/null +++ b/drivers/phy/phy-apple-atc.c @@ -0,0 +1,56 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2022 Mark Kettenis kettenis@openbsd.org + */ + +#include <common.h> +#include <dm.h> +#include <dm/device-internal.h> +#include <generic-phy.h> +#include <reset-uclass.h> + +static const struct phy_ops apple_atcphy_ops = { +}; + +static struct driver apple_atcphy_driver = { + .name = "apple-atcphy", + .id = UCLASS_PHY, + .ops = &apple_atcphy_ops, +}; + +static int apple_atcphy_reset_of_xlate(struct reset_ctl *reset_ctl, + struct ofnode_phandle_args *args) +{ + if (args->args_count != 0) + return -EINVAL; + + return 0; +} + +static const struct reset_ops apple_atcphy_reset_ops = { + .of_xlate = apple_atcphy_reset_of_xlate, +}; + +static int apple_atcphy_reset_probe(struct udevice *dev) +{ + struct udevice *child; + + device_bind(dev, &apple_atcphy_driver, "apple-atcphy", NULL, + dev_ofnode(dev), &child); + + return 0; +} + +static const struct udevice_id apple_atcphy_ids[] = { + { .compatible = "apple,t6000-atcphy" }, + { .compatible = "apple,t8103-atcphy" }, + { } +}; + +U_BOOT_DRIVER(apple_atcphy_reset) = { + .name = "apple-atcphy-reset", + .id = UCLASS_RESET, + .of_match = apple_atcphy_ids, + .ops = &apple_atcphy_reset_ops, + .probe = apple_atcphy_reset_probe, +};