dt-bindings: input: cypress,cyapa: convert to dtschema

Convert the Cypress All Points Addressable (APA) I2C Touchpad / Trackpad
bindings to DT schema.

Reviewed-by: Rob Herring <[e-mail]>
Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Dmitry Torokhov <[e-mail]>

Documentation/devicetree/bindings/input/cypress,cyapa.txt

···
-Cypress I2C Touchpad
-
-Required properties:
-- compatible: must be "cypress,cyapa".
-- reg: I2C address of the chip.
-- interrupts: interrupt to which the chip is connected (see interrupt
-	binding[0]).
-
-Optional properties:
-- wakeup-source: touchpad can be used as a wakeup source.
-- pinctrl-names: should be "default" (see pinctrl binding [1]).
-- pinctrl-0: a phandle pointing to the pin settings for the device (see
-	pinctrl binding [1]).
-- vcc-supply: a phandle for the regulator supplying 3.3V power.
-
-[0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
-[1]: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
-
-Example:
-	&i2c0 {
-		/* ... */
-
-		/* Cypress Gen3 touchpad */
-		touchpad@67 {
-			compatible = "cypress,cyapa";
-			reg = <0x67>;
-			interrupt-parent = <&gpio>;
-			interrupts = <2 IRQ_TYPE_EDGE_FALLING>;	/* GPIO 2 */
-			wakeup-source;
-		};
-
-		/* Cypress Gen5 and later touchpad */
-		touchpad@24 {
-			compatible = "cypress,cyapa";
-			reg = <0x24>;
-			interrupt-parent = <&gpio>;
-			interrupts = <2 IRQ_TYPE_EDGE_FALLING>;	/* GPIO 2 */
-			wakeup-source;
-		};
-
-		/* ... */
-	};

Documentation/devicetree/bindings/input/cypress,cyapa.yaml

···
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/cypress,cyapa.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cypress All Points Addressable (APA) I2C Touchpad / Trackpad
+
+maintainers:
+  - Krzysztof Kozlowski <[e-mail]>
+
+properties:
+  compatible:
+    const: cypress,cyapa
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  wakeup-source: true
+
+  vcc-supply:
+    description: 3.3V power
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        trackpad@67 {
+            reg = <0x67>;
+            compatible = "cypress,cyapa";
+            interrupts = <2 IRQ_TYPE_EDGE_FALLING>;
+            interrupt-parent = <&gpx1>;
+            wakeup-source;
+        };
+    };