dt-bindings: input: atmel,captouch: convert bindings to YAML

Convert the Atmel capacitive touchscreen bindings to YAML format.
Signed-off-by: Dharma Balasubiramani <dharma.b@microchip.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240209064755.47516-1-dharma.b@microchip.comSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Documentation/devicetree/bindings/input/atmel,captouch.txt

-Device tree bindings for Atmel capacitive touch device, typically
-an Atmel touch sensor connected to AtmegaXX MCU running firmware
-based on Qtouch library.
-
-The node for this device must be a child of a I2C controller node, as the
-device communicates via I2C.
-
-Required properties:
-
-	compatible:	Must be "atmel,captouch".
-	reg:		The I2C slave address of the device.
-	interrupts:	Property describing the interrupt line the device
-			is connected to. The device only has one interrupt
-			source.
-	linux,keycodes:	Specifies an array of numeric keycode values to
-			be used for reporting button presses. The array can
-			contain up to 8 entries.
-
-Optional properties:
-
-	autorepeat:	Enables the Linux input system's autorepeat
-			feature on the input device.
-
-Example:
-
-	atmel-captouch@51 {
-		compatible = "atmel,captouch";
-		reg = <0x51>;
-		interrupt-parent = <&tlmm>;
-		interrupts = <67 IRQ_TYPE_EDGE_FALLING>;
-		linux,keycodes = <BTN_0>, <BTN_1>,
-			<BTN_2>, <BTN_3>,
-			<BTN_4>, <BTN_5>,
-			<BTN_6>, <BTN_7>;
-		autorepeat;
-	};

Documentation/devicetree/bindings/input/atmel,captouch.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/atmel,captouch.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atmel capacitive touch device
+
+maintainers:
+  - Dharma balasubiramani <dharma.b@microchip.com>
+
+description:
+  Atmel capacitive touch device, typically an Atmel touch sensor connected to
+  AtmegaXX MCU running firmware based on Qtouch library.
+
+allOf:
+  - $ref: input.yaml#
+
+properties:
+  compatible:
+    const: atmel,captouch
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  linux,keycodes:
+    minItems: 1
+    maxItems: 8
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - linux,keycodes
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/input/linux-event-codes.h>
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      touch@51 {
+        compatible = "atmel,captouch";
+        reg = <0x51>;
+        interrupt-parent = <&tlmm>;
+        interrupts = <67 IRQ_TYPE_EDGE_FALLING>;
+        linux,keycodes = <BTN_0>, <BTN_1>,
+                         <BTN_2>, <BTN_3>,
+                         <BTN_4>, <BTN_5>,
+                         <BTN_6>, <BTN_7>;
+        autorepeat;
+      };
+    };