dt-bindings: usb: add binding for USB GPIO based connection detection driver (f651c73e) · Commits · 戴 / test

It's used to support dual role switch via GPIO when use Type-B receptacle, typically the USB ID pin is connected to an input GPIO, and also used to enable/disable device when the USB Vbus pin is connected to an input GPIO. Signed-off-by:

Chunfeng Yun <chunfeng.yun@mediatek.com> Reviewed-by:

Linus Walleij <linus.walleij@linaro.org> Reviewed-by:

Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/1567070558-29417-4-git-send-email-chunfeng.yun@mediatek.com Signed-off-by:

Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/devicetree/bindings/usb/usb-conn-gpio.txt

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Original line number	Diff line number	Diff line
		USB GPIO Based Connection Detection

		This is typically used to switch dual role mode from the USB ID pin connected
		to an input GPIO, and also used to enable/disable device mode from the USB
		Vbus pin connected to an input GPIO.

		Required properties:
		- compatible : should include "gpio-usb-b-connector" and "usb-b-connector".
		- id-gpios, vbus-gpios : input gpios, either one of them must be present,
		and both can be present as well.
		see connector/usb-connector.txt

		Optional properties:
		- vbus-supply : can be present if needed when supports dual role mode.
		see connector/usb-connector.txt

		- Sub-nodes:
		- port : can be present.
		see graph.txt

		Example:

		&mtu3 {
		connector {
		compatible = "gpio-usb-b-connector", "usb-b-connector";
		type = "micro";
		id-gpios = <&pio 12 GPIO_ACTIVE_HIGH>;
		vbus-supply = <&usb_p0_vbus>;
		};
		};

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