dt-bindings: input: touchscreen: fsl,imx6ul-tsc convert to YAML

Convert the i.MX6UL touchscreen DT binding to YAML.

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

Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/fsl,imx6ul-tsc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX6UL Touch Controller
+
+maintainers:
+  - Haibo Chen <[e-mail]>
+  - Shawn Guo <[e-mail]>
+  - Sascha Hauer <[e-mail]>
+
+properties:
+  compatible:
+    const: fsl,imx6ul-tsc
+
+  reg:
+    items:
+      - description: touch controller address
+      - description: ADC2 address
+
+  interrupts:
+    items:
+      - description: touch controller address
+      - description: ADC2 address
+
+  clocks:
+    maxItems: 2
+
+  clock-names:
+    items:
+      - const: tsc
+      - const: adc
+
+  xnur-gpios:
+    maxItems: 1
+    description:
+      The X- gpio this controller connect to. This xnur-gpio returns to
+      low once the finger leave the touch screen (The last touch event
+      the touch controller capture).
+
+  measure-delay-time:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      The value of measure delay time. Before X-axis or Y-axis measurement,
+      the screen need some time before even potential distribution ready.
+    default: 0xffff
+    minimum: 0
+    maximum: 0xffffff
+
+  pre-charge-time:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      The touch screen need some time to precharge.
+    default: 0xfff
+    minimum: 0
+    maximum: 0xffffffff
+
+  touchscreen-average-samples:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Number of data samples which are averaged for each read.
+    enum: [ 1, 4, 8, 16, 32 ]
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - xnur-gpios
+
+allOf:
+  - $ref: touchscreen.yaml#
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/imx6ul-clock.h>
+    #include <dt-bindings/gpio/gpio.h>
+    touchscreen@2040000 {
+        compatible = "fsl,imx6ul-tsc";
+        reg = <0x02040000 0x4000>, <0x0219c000 0x4000>;
+        interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clks IMX6UL_CLK_IPG>,
+                 <&clks IMX6UL_CLK_ADC2>;
+        clock-names = "tsc", "adc";
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_tsc>;
+        xnur-gpios = <&gpio1 3 GPIO_ACTIVE_LOW>;
+        measure-delay-time = <0xfff>;
+        pre-charge-time = <0xffff>;
+        touchscreen-average-samples = <32>;
+    };

Documentation/devicetree/bindings/input/touchscreen/imx6ul_tsc.txt

···
-* Freescale i.MX6UL Touch Controller
-
-Required properties:
-- compatible: must be "fsl,imx6ul-tsc".
-- reg: this touch controller address and the ADC2 address.
-- interrupts: the interrupt of this touch controller and ADC2.
-- clocks: the root clock of touch controller and ADC2.
-- clock-names; must be "tsc" and "adc".
-- xnur-gpio: the X- gpio this controller connect to.
-  This xnur-gpio returns to low once the finger leave the touch screen (The
-  last touch event the touch controller capture).
-
-Optional properties:
-- measure-delay-time: the value of measure delay time.
-  Before X-axis or Y-axis measurement, the screen need some time before
-  even potential distribution ready.
-  This value depends on the touch screen.
-- pre-charge-time: the touch screen need some time to precharge.
-  This value depends on the touch screen.
-- touchscreen-average-samples: Number of data samples which are averaged for
-  each read. Valid values are 1, 4, 8, 16 and 32.
-
-Example:
-	tsc: tsc@2040000 {
-		compatible = "fsl,imx6ul-tsc";
-		reg = <0x02040000 0x4000>, <0x0219c000 0x4000>;
-		interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>,
-			     <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&clks IMX6UL_CLK_IPG>,
-			 <&clks IMX6UL_CLK_ADC2>;
-		clock-names = "tsc", "adc";
-		pinctrl-names = "default";
-		pinctrl-0 = <&pinctrl_tsc>;
-		xnur-gpio = <&gpio1 3 GPIO_ACTIVE_LOW>;
-		measure-delay-time = <0xfff>;
-		pre-charge-time = <0xffff>;
-		touchscreen-average-samples = <32>;
-	};