dt-bindings: touchscreen: convert zet6223 bindings to json schema

Convert Zeitec ZET6223 touchscreen controller device tree binding to
json-schema.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250918153630.2535208-4-dario.binacchi@amarulasolutions.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Author: passgat

Documentation/devicetree/bindings/input/touchscreen/zeitec,zet6223.yaml

@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/zeitec,zet6223.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Zeitec ZET6223 touchscreen controller
+
+description:
+  Zeitec ZET6223 I2C driven touchscreen controller.
+
+maintainers:
+  - Dario Binacchi <dario.binacchi@amarulasolutions.com>
+
+allOf:
+  - $ref: touchscreen.yaml#
+
+properties:
+  compatible:
+    enum:
+      - zeitec,zet6223
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  vio-supply:
+    description: 1.8V or 3.3V VIO supply.
+
+  vcc-supply:
+    description: 3.3V VCC supply.
+
+  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:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        touchscreen@76 {
+            compatible = "zeitec,zet6223";
+            reg = <0x76>;
+            interrupt-parent = <&pio>;
+            interrupts = <6 11 IRQ_TYPE_EDGE_FALLING>;
+        };
+    };