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

Convert the ST-Microelectronics FingerTip touchscreen controller
bindings to DT schema.

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

Author: krzk

Documentation/devicetree/bindings/input/touchscreen/st,stmfts.txt

@@ -0,0 +1,72 @@
+# 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 <[email protected]>
+
+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>;
+        };
+    };