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- From d5a026cc8306ccd3e99e1455c87e38f8e6fa18df Mon Sep 17 00:00:00 2001
- From: Linus Walleij <[email protected]>
- Date: Mon, 7 Nov 2022 00:05:06 +0100
- Subject: [PATCH 01/29] usb: phy: phy-gpio-vbus-usb: Add device tree probing
- Make it possible to probe the GPIO VBUS detection driver
- from the device tree compatible for GPIO USB B connectors.
- Since this driver is using the "gpio-usb-b-connector"
- compatible, it is important to discern it from the role
- switch connector driver (which does not provide a phy),
- so we add some Kconfig text and depend on !USB_CONN_GPIO.
- Cc: Rob Herring <[email protected]>
- Cc: Prashant Malani <[email protected]>
- Cc: Felipe Balbi <[email protected]>
- Signed-off-by: Linus Walleij <[email protected]>
- Link: https://lore.kernel.org/r/[email protected]
- Signed-off-by: Greg Kroah-Hartman <[email protected]>
- ---
- --- a/drivers/usb/phy/Kconfig
- +++ b/drivers/usb/phy/Kconfig
- @@ -93,12 +93,16 @@ config USB_GPIO_VBUS
- tristate "GPIO based peripheral-only VBUS sensing 'transceiver'"
- depends on GPIOLIB || COMPILE_TEST
- depends on USB_GADGET || !USB_GADGET # if USB_GADGET=m, this can't be 'y'
- + depends on !USB_CONN_GPIO
- select USB_PHY
- help
- Provides simple GPIO VBUS sensing for controllers with an
- internal transceiver via the usb_phy interface, and
- optionally control of a D+ pullup GPIO as well as a VBUS
- - current limit regulator.
- + current limit regulator. This driver is for devices that do
- + NOT support role switch. OTG devices that can do role switch
- + (master/peripheral) shall use the USB based connection
- + detection driver USB_CONN_GPIO.
-
- config OMAP_OTG
- tristate "OMAP USB OTG controller driver"
- --- a/drivers/usb/phy/phy-gpio-vbus-usb.c
- +++ b/drivers/usb/phy/phy-gpio-vbus-usb.c
- @@ -366,12 +366,24 @@ static const struct dev_pm_ops gpio_vbus
-
- MODULE_ALIAS("platform:gpio-vbus");
-
- +/*
- + * NOTE: this driver matches against "gpio-usb-b-connector" for
- + * devices that do NOT support role switch.
- + */
- +static const struct of_device_id gpio_vbus_of_match[] = {
- + {
- + .compatible = "gpio-usb-b-connector",
- + },
- + {},
- +};
- +
- static struct platform_driver gpio_vbus_driver = {
- .driver = {
- .name = "gpio-vbus",
- #ifdef CONFIG_PM
- .pm = &gpio_vbus_dev_pm_ops,
- #endif
- + .of_match_table = gpio_vbus_of_match,
- },
- .probe = gpio_vbus_probe,
- .remove = gpio_vbus_remove,
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