target/linux/gemini/patches-6.1/0001-usb-phy-phy-gpio-vbus-usb-Add-device-tree-probing.patch

   1 From d5a026cc8306ccd3e99e1455c87e38f8e6fa18df Mon Sep 17 00:00:00 2001
   2 From: Linus Walleij <linus.walleij@linaro.org>
   3 Date: Mon, 7 Nov 2022 00:05:06 +0100
   4 Subject: [PATCH 01/29] usb: phy: phy-gpio-vbus-usb: Add device tree probing
   5
   6 Make it possible to probe the GPIO VBUS detection driver
   7 from the device tree compatible for GPIO USB B connectors.
   8
   9 Since this driver is using the "gpio-usb-b-connector"
  10 compatible, it is important to discern it from the role
  11 switch connector driver (which does not provide a phy),
  12 so we add some Kconfig text and depend on !USB_CONN_GPIO.
  13
  14 Cc: Rob Herring <robh@kernel.org>
  15 Cc: Prashant Malani <pmalani@chromium.org>
  16 Cc: Felipe Balbi <balbi@kernel.org>
  17 Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
  18 Link: https://lore.kernel.org/r/20221106230506.1646101-1-linus.walleij@linaro.org
  19 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  20 ---
  21 --- a/drivers/usb/phy/Kconfig
  22 +++ b/drivers/usb/phy/Kconfig
  23 @@ -93,12 +93,16 @@ config USB_GPIO_VBUS
  24         tristate "GPIO based peripheral-only VBUS sensing 'transceiver'"
  25         depends on GPIOLIB || COMPILE_TEST
  26         depends on USB_GADGET || !USB_GADGET # if USB_GADGET=m, this can't be 'y'
  27 +       depends on !USB_CONN_GPIO
  28         select USB_PHY
  29         help
  30           Provides simple GPIO VBUS sensing for controllers with an
  31           internal transceiver via the usb_phy interface, and
  32           optionally control of a D+ pullup GPIO as well as a VBUS
  33 -         current limit regulator.
  34 +         current limit regulator. This driver is for devices that do
  35 +         NOT support role switch. OTG devices that can do role switch
  36 +         (master/peripheral) shall use the USB based connection
  37 +         detection driver USB_CONN_GPIO.
  38
  39  config OMAP_OTG
  40         tristate "OMAP USB OTG controller driver"
  41 --- a/drivers/usb/phy/phy-gpio-vbus-usb.c
  42 +++ b/drivers/usb/phy/phy-gpio-vbus-usb.c
  43 @@ -366,12 +366,24 @@ static const struct dev_pm_ops gpio_vbus
  44
  45  MODULE_ALIAS("platform:gpio-vbus");
  46
  47 +/*
  48 + * NOTE: this driver matches against "gpio-usb-b-connector" for
  49 + * devices that do NOT support role switch.
  50 + */
  51 +static const struct of_device_id gpio_vbus_of_match[] = {
  52 +       {
  53 +               .compatible = "gpio-usb-b-connector",
  54 +       },
  55 +       {},
  56 +};
  57 +
  58  static struct platform_driver gpio_vbus_driver = {
  59         .driver = {
  60                 .name  = "gpio-vbus",
  61  #ifdef CONFIG_PM
  62                 .pm = &gpio_vbus_dev_pm_ops,
  63  #endif
  64 +               .of_match_table = gpio_vbus_of_match,
  65         },
  66         .probe          = gpio_vbus_probe,
  67         .remove         = gpio_vbus_remove,