dt-bindings: display: Convert raspberrypi,7inch-touchscreen panel to DT schema

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>;

			};

		};

	};

};

# SPDX-License-Identifier: GPL-2.0

%YAML 1.2

---

$id: http://devicetree.org/schemas/display/panel/raspberrypi,7inch-touchscreen.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#

title: The official 7" (800x480) Raspberry Pi touchscreen

maintainers:

  - Eric Anholt <eric@anholt.net>

  - Thierry Reding <thierry.reding@gmail.com>

description: |+

  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.

properties:

  compatible:

    const: raspberrypi,7inch-touchscreen-panel

  reg:

    const: 0x45

  port: true

required:

  - compatible

  - reg

  - port

additionalProperties: false

examples:

  - |+

    dsi1: dsi {

      #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>;

      scl-gpios = <&gpio 28 0>;

      sda-gpios = <&gpio 29 0>;

      lcd@45 {

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

        reg = <0x45>;

        port {

          panel_dsi_port: endpoint {

            remote-endpoint = <&dsi_out_port>;

          };

        };

      };

    };

...