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68 lines
2.3 KiB
Diff
68 lines
2.3 KiB
Diff
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From d5a026cc8306ccd3e99e1455c87e38f8e6fa18df Mon Sep 17 00:00:00 2001
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From: Linus Walleij <linus.walleij@linaro.org>
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Date: Mon, 7 Nov 2022 00:05:06 +0100
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Subject: [PATCH 01/29] usb: phy: phy-gpio-vbus-usb: Add device tree probing
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Make it possible to probe the GPIO VBUS detection driver
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from the device tree compatible for GPIO USB B connectors.
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Since this driver is using the "gpio-usb-b-connector"
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compatible, it is important to discern it from the role
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switch connector driver (which does not provide a phy),
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so we add some Kconfig text and depend on !USB_CONN_GPIO.
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Cc: Rob Herring <robh@kernel.org>
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Cc: Prashant Malani <pmalani@chromium.org>
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Cc: Felipe Balbi <balbi@kernel.org>
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Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Link: https://lore.kernel.org/r/20221106230506.1646101-1-linus.walleij@linaro.org
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Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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---
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--- a/drivers/usb/phy/Kconfig
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+++ b/drivers/usb/phy/Kconfig
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@@ -93,12 +93,16 @@ config USB_GPIO_VBUS
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tristate "GPIO based peripheral-only VBUS sensing 'transceiver'"
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depends on GPIOLIB || COMPILE_TEST
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depends on USB_GADGET || !USB_GADGET # if USB_GADGET=m, this can't be 'y'
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+ depends on !USB_CONN_GPIO
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select USB_PHY
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help
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Provides simple GPIO VBUS sensing for controllers with an
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internal transceiver via the usb_phy interface, and
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optionally control of a D+ pullup GPIO as well as a VBUS
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- current limit regulator.
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+ current limit regulator. This driver is for devices that do
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+ NOT support role switch. OTG devices that can do role switch
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+ (master/peripheral) shall use the USB based connection
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+ detection driver USB_CONN_GPIO.
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config OMAP_OTG
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tristate "OMAP USB OTG controller driver"
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--- a/drivers/usb/phy/phy-gpio-vbus-usb.c
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+++ b/drivers/usb/phy/phy-gpio-vbus-usb.c
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@@ -366,12 +366,24 @@ static const struct dev_pm_ops gpio_vbus
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MODULE_ALIAS("platform:gpio-vbus");
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+/*
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+ * NOTE: this driver matches against "gpio-usb-b-connector" for
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+ * devices that do NOT support role switch.
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+ */
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+static const struct of_device_id gpio_vbus_of_match[] = {
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+ {
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+ .compatible = "gpio-usb-b-connector",
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+ },
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+ {},
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+};
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+
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static struct platform_driver gpio_vbus_driver = {
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.driver = {
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.name = "gpio-vbus",
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#ifdef CONFIG_PM
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.pm = &gpio_vbus_dev_pm_ops,
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#endif
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+ .of_match_table = gpio_vbus_of_match,
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},
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.probe = gpio_vbus_probe,
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.remove = gpio_vbus_remove,
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