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Commit a8a5549f authored by Benson Leung's avatar Benson Leung Committed by Chanwoo Choi
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dt-bindings: extcon: Add support for cros-ec device 



This patch add documentation for binding of USB Type C cable detection
mechanism is using EXTCON subsystem. The device can detect the presence
of display out but it may also detect other external accessories when
external accessories is attached or detached.

Signed-off-by: default avatarBenson Leung <bleung@chromium.org>
Signed-off-by: default avatarEnric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
parent c6983166

Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.txt

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+24 −0
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ChromeOS EC USB Type-C cable and accessories detection



On ChromeOS systems with USB Type C ports, the ChromeOS Embedded Controller is

able to detect the state of external accessories such as display adapters

or USB devices when said accessories are attached or detached.



The node for this device must be under a cros-ec node like google,cros-ec-spi

or google,cros-ec-i2c.



Required properties:

- compatible:		Should be "google,extcon-usbc-cros-ec".

- google,usb-port-id:	Specifies the USB port ID to use.



Example:

	cros-ec@0 {

		compatible = "google,cros-ec-i2c";



		...



		extcon {

			compatible = "google,extcon-usbc-cros-ec";

			google,usb-port-id = <0>;

		};

	}