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Commit 407b0b1e authored by Eric Anholt's avatar Eric Anholt
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dt-bindings: Document the Raspberry Pi Touchscreen nodes. 



This doesn't yet cover input, but the driver does get the display
working when the firmware is disabled from talking to our I2C lines.

Signed-off-by: default avatarEric Anholt <eric@anholt.net>
Acked-by: default avatarRob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20170927193654.12609-3-eric@anholt.net
parent c0374eb8

Documentation/devicetree/bindings/display/panel/raspberrypi,7inch-touchscreen.txt

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This binding covers the official 7" (800x480) Raspberry Pi touchscreen

panel.



This DSI panel contains:



- TC358762 DSI->DPI bridge

- Atmel microcontroller on I2C for power sequencing the DSI bridge and

  controlling backlight

- Touchscreen controller on I2C for touch input



and this binding covers the DSI display parts but not its touch input.



Required properties:

- compatible:	Must be "raspberrypi,7inch-touchscreen-panel"

- reg:		Must be "45"

- port:		See panel-common.txt



Example:



dsi1: dsi@7e700000 {

	#address-cells = <1>;

	#size-cells = <0>;

	<...>



	port {

		dsi_out_port: endpoint {

			remote-endpoint = <&panel_dsi_port>;

		};

	};

};



i2c_dsi: i2c {

	compatible = "i2c-gpio";

	#address-cells = <1>;

	#size-cells = <0>;

	gpios = <&gpio 28 0

		 &gpio 29 0>;



	lcd@45 {

		compatible = "raspberrypi,7inch-touchscreen-panel";

		reg = <0x45>;



		port {

			panel_dsi_port: endpoint {

				remote-endpoint = <&dsi_out_port>;

			};

		};

	};

};