dt-bindings: touchscreen: Convert Goodix touchscreen to json-schema

Convert the Goodix binding to DT schema format using json-schema
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200108091118.5130-3-benjamin.gaignard@st.comSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Documentation/devicetree/bindings/input/touchscreen/goodix.txt

-Device tree bindings for Goodix GT9xx series touchscreen controller
-
-Required properties:
-
- - compatible		: Should be "goodix,gt1151"
-				 or "goodix,gt5663"
-				 or "goodix,gt5688"
-				 or "goodix,gt911"
-				 or "goodix,gt9110"
-				 or "goodix,gt912"
-				 or "goodix,gt927"
-				 or "goodix,gt9271"
-				 or "goodix,gt928"
-				 or "goodix,gt967"
- - reg			: I2C address of the chip. Should be 0x5d or 0x14
- - interrupts		: Interrupt to which the chip is connected
-
-Optional properties:
-
- - irq-gpios		: GPIO pin used for IRQ. The driver uses the
-			  interrupt gpio pin as output to reset the device.
- - reset-gpios		: GPIO pin used for reset
- - AVDD28-supply	: Analog power supply regulator on AVDD28 pin
- - VDDIO-supply		: GPIO power supply regulator on VDDIO pin
- - touchscreen-inverted-x
- - touchscreen-inverted-y
- - touchscreen-size-x
- - touchscreen-size-y
- - touchscreen-swapped-x-y
-
-The touchscreen-* properties are documented in touchscreen.txt in this
-directory.
-
-Example:
-
-	i2c@00000000 {
-		/* ... */
-
-		gt928@5d {
-			compatible = "goodix,gt928";
-			reg = <0x5d>;
-			interrupt-parent = <&gpio>;
-			interrupts = <0 0>;
-
-			irq-gpios = <&gpio1 0 0>;
-			reset-gpios = <&gpio1 1 0>;
-		};
-
-		/* ... */
-	};

Documentation/devicetree/bindings/input/touchscreen/goodix.yaml

+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/goodix.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Goodix GT9xx series touchscreen controller Bindings
+
+maintainers:
+  - Dmitry Torokhov <dmitry.torokhov@gmail.com>
+
+allOf:
+  - $ref: touchscreen.yaml#
+
+properties:
+  compatible:
+    enum:
+      - goodix,gt1151
+      - goodix,gt5663
+      - goodix,gt5688
+      - goodix,gt911
+      - goodix,gt9110
+      - goodix,gt912
+      - goodix,gt927
+      - goodix,gt9271
+      - goodix,gt928
+      - goodix,gt967
+
+  reg:
+    enum: [ 0x5d, 0x14 ]
+
+  interrupts:
+    maxItems: 1
+
+  irq-gpios:
+    description: GPIO pin used for IRQ.
+                 The driver uses the interrupt gpio pin as
+                 output to reset the device.
+    maxItems: 1
+
+  reset-gpios:
+    maxItems: 1
+
+  AVDD28-supply:
+    description: Analog power supply regulator on AVDD28 pin
+
+  VDDIO-supply:
+    description: GPIO power supply regulator on VDDIO pin
+
+  touchscreen-inverted-x: true
+  touchscreen-inverted-y: true
+  touchscreen-size-x: true
+  touchscreen-size-y: true
+  touchscreen-swapped-x-y: true
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+examples:
+- |
+    i2c@00000000 {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      gt928@5d {
+        compatible = "goodix,gt928";
+        reg = <0x5d>;
+        interrupt-parent = <&gpio>;
+        interrupts = <0 0>;
+        irq-gpios = <&gpio1 0 0>;
+        reset-gpios = <&gpio1 1 0>;
+      };
+    };
+
+...