dt-bindings: display: convert raydium,rm67191 to DT Schema

v2:
  - Fix entry in MAINTAINERS
  - Add reg number to node name (Rob)
  - Fix stray spaces
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Robert Chiras <robert.chiras@nxp.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200408195109.32692-19-sam@ravnborg.org

Documentation/devicetree/bindings/display/panel/raydium,rm67191.txt

-Raydium RM67171 OLED LCD panel with MIPI-DSI protocol
-
-Required properties:
-- compatible: 		"raydium,rm67191"
-- reg:			virtual channel for MIPI-DSI protocol
-			must be <0>
-- dsi-lanes:		number of DSI lanes to be used
-			must be <3> or <4>
-- port: 		input port node with endpoint definition as
-			defined in Documentation/devicetree/bindings/graph.txt;
-			the input port should be connected to a MIPI-DSI device
-			driver
-
-Optional properties:
-- reset-gpios:		a GPIO spec for the RST_B GPIO pin
-- v3p3-supply:		phandle to 3.3V regulator that powers the VDD_3V3 pin
-- v1p8-supply:		phandle to 1.8V regulator that powers the VDD_1V8 pin
-- width-mm:		see panel-common.txt
-- height-mm:		see panel-common.txt
-- video-mode:		0 - burst-mode
-			1 - non-burst with sync event
-			2 - non-burst with sync pulse
-
-Example:
-
-	panel@0 {
-		compatible = "raydium,rm67191";
-		reg = <0>;
-		pinctrl-0 = <&pinctrl_mipi_dsi_0_1_en>;
-		pinctrl-names = "default";
-		reset-gpios = <&gpio1 7 GPIO_ACTIVE_LOW>;
-		dsi-lanes = <4>;
-		width-mm = <68>;
-		height-mm = <121>;
-
-		port {
-			panel_in: endpoint {
-				remote-endpoint = <&mipi_out>;
-			};
-		};
-	};

Documentation/devicetree/bindings/display/panel/raydium,rm67191.yaml

+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/raydium,rm67191.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Raydium RM67171 OLED LCD panel with MIPI-DSI protocol
+
+maintainers:
+  - Robert Chiras <robert.chiras@nxp.com>
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    const: raydium,rm67191
+
+  reg: true
+  port: true
+  reset-gpios: true
+  width-mm: true
+  height-mm: true
+
+  dsi-lanes:
+    description: Number of DSI lanes to be used must be <3> or <4>
+    enum: [3, 4]
+
+  v3p3-supply:
+    description: phandle to 3.3V regulator that powers the VDD_3V3 pin
+
+  v1p8-supply:
+    description: phandle to 1.8V regulator that powers the VDD_1V8 pin
+
+  video-mode:
+    description: |
+      0 - burst-mode
+      1 - non-burst with sync event
+      2 - non-burst with sync pulse
+    enum: [0, 1, 2]
+
+required:
+  - compatible
+  - reg
+  - dsi-lanes
+  - port
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    dsi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        panel@0 {
+            compatible = "raydium,rm67191";
+            reg = <0>;
+            reset-gpios = <&gpio1 7 GPIO_ACTIVE_LOW>;
+            dsi-lanes = <4>;
+            width-mm = <68>;
+            height-mm = <121>;
+            video-mode = <1>;
+
+            port {
+                panel_in: endpoint {
+                    remote-endpoint = <&mipi_out>;
+                };
+            };
+        };
+    };
+
+...

MAINTAINERS

@@ -5388,7 +5388,7 @@ DRM DRIVER FOR RAYDIUM RM67191 PANELS
 M:	Robert Chiras <robert.chiras@nxp.com>
 S:	Maintained
 F:	drivers/gpu/drm/panel/panel-raydium-rm67191.c
-F:	Documentation/devicetree/bindings/display/panel/raydium,rm67191.txt
+F:	Documentation/devicetree/bindings/display/panel/raydium,rm67191.yaml
 
 DRM DRIVER FOR RAGE 128 VIDEO CARDS
 S:	Orphan / Obsolete