dt-bindings: display: convert sharp,lq150x1lg11 to DT Schema

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Peter Rosin <peda@axentia.se>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200408195109.32692-33-sam@ravnborg.org

Documentation/devicetree/bindings/display/panel/sharp,lq150x1lg11.txt

-Sharp 15" LQ150X1LG11 XGA TFT LCD panel
-
-Required properties:
-- compatible: should be "sharp,lq150x1lg11"
-- power-supply: regulator to provide the VCC supply voltage (3.3 volts)
-
-Optional properties:
-- backlight: phandle of the backlight device
-- rlud-gpios: a single GPIO for the RL/UD (rotate 180 degrees) pin.
-- sellvds-gpios: a single GPIO for the SELLVDS pin.
-
-If rlud-gpios and/or sellvds-gpios are not specified, the RL/UD and/or SELLVDS
-pins are assumed to be handled appropriately by the hardware.
-
-Example:
-
-	backlight: backlight {
-		compatible = "pwm-backlight";
-		pwms = <&pwm 0 100000>;                      /* VBR */
-
-		brightness-levels = <0 20 40 60 80 100>;
-		default-brightness-level = <2>;
-
-		power-supply = <&vdd_12v_reg>;               /* VDD */
-		enable-gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;  /* XSTABY */
-	};
-
-	panel {
-		compatible = "sharp,lq150x1lg11";
-
-		power-supply = <&vcc_3v3_reg>;               /* VCC */
-
-		backlight = <&backlight>;
-		rlud-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;    /* RL/UD */
-		sellvds-gpios = <&gpio 18 GPIO_ACTIVE_HIGH>; /* SELLVDS */
-	};

Documentation/devicetree/bindings/display/panel/sharp,lq150x1lg11.yaml

+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/sharp,lq150x1lg11.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sharp 15" LQ150X1LG11 XGA TFT LCD panel
+
+maintainers:
+  - Peter Rosin <peda@axentia.se>
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    const: sharp,lq150x1lg11
+
+  power-supply: true
+  backlight: true
+
+  rlud-gpios:
+    maxItems: 1
+    description: |
+      GPIO for the RL/UD (rotate 180 degrees) pin.
+      If rlud-gpios and/or sellvds-gpios are not specified,
+      the RL/UD and/or SELLVDS pins are assumed to be handled
+      appropriately by the hardware.
+
+  sellvds-gpios:
+    maxItems: 1
+    description: |
+      GPIO for the SELLVDS pin.
+      If rlud-gpios and/or sellvds-gpios are not specified,
+      the RL/UD and/or SELLVDS pins are assumed to be handled
+      appropriately by the hardware.
+
+required:
+  - compatible
+  - power-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    panel {
+        compatible = "sharp,lq150x1lg11";
+
+        power-supply = <&vcc_3v3_reg>;               /* VCC */
+
+        backlight = <&backlight>;
+        rlud-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;    /* RL/UD */
+        sellvds-gpios = <&gpio 18 GPIO_ACTIVE_HIGH>; /* SELLVDS */
+    };
+
+...