dt-bindings: input: touchscreen: st,stmfts: convert to dtschema

* ST-Microelectronics FingerTip touchscreen controller

The ST-Microelectronics FingerTip device provides a basic touchscreen

functionality. Along with it the user can enable the touchkey which can work as

a basic HOME and BACK key for phones.

The driver supports also hovering as an absolute single touch event with x, y, z

coordinates.

Required properties:

- compatible		: must be "st,stmfts"

- reg			: I2C slave address, (e.g. 0x49)

- interrupts		: interrupt specification

- avdd-supply		: analogic power supply

- vdd-supply		: power supply

- touchscreen-size-x	: see touchscreen.txt

- touchscreen-size-y	: see touchscreen.txt

Optional properties:

- touch-key-connected	: specifies whether the touchkey feature is connected

- ledvdd-supply		: power supply to the touch key leds

Example:

i2c@00000000 {

	/* ... */

	touchscreen@49 {

		compatible = "st,stmfts";

		reg = <0x49>;

		interrupt-parent = <&gpa1>;

		interrupts = <1 IRQ_TYPE_NONE>;

		touchscreen-size-x = <1599>;

		touchscreen-size-y = <2559>;

		touch-key-connected;

		avdd-supply = <&ldo30_reg>;

		vdd-supply = <&ldo31_reg>;

		ledvdd-supply = <&ldo33_reg>;

	};

};

# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause

%YAML 1.2

---

$id: http://devicetree.org/schemas/input/touchscreen/st,stmfts.yaml#

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

title: ST-Microelectronics FingerTip touchscreen controller

maintainers:

  - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

description:

  The ST-Microelectronics FingerTip device provides a basic touchscreen

  functionality. Along with it the user can enable the touchkey which can work

  as a basic HOME and BACK key for phones.

allOf:

  - $ref: touchscreen.yaml#

properties:

  compatible:

    const: st,stmfts

  reg:

    maxItems: 1

  avdd-supply:

    description: Analogic power supply

  interrupts:

    maxItems: 1

  ledvdd-supply:

    description: Power supply to the touch key leds

  touch-key-connected:

    type: boolean

    description: The touchkey feature is connected

  vdd-supply:

    description: Power supply

required:

  - compatible

  - reg

  - avdd-supply

  - interrupts

  - vdd-supply

unevaluatedProperties: false

examples:

  - |

    #include <dt-bindings/interrupt-controller/irq.h>

    i2c {

        #address-cells = <1>;

        #size-cells = <0>;

        touchscreen@49 {

            compatible = "st,stmfts";

            reg = <0x49>;

            interrupt-parent = <&gpa1>;

            interrupts = <1 IRQ_TYPE_LEVEL_LOW>;

            touchscreen-size-x = <1599>;

            touchscreen-size-y = <2559>;

            touch-key-connected;

            avdd-supply = <&ldo30_reg>;

            vdd-supply = <&ldo31_reg>;

            ledvdd-supply = <&ldo33_reg>;

        };

    };