media: dt-bindings: media: renesas,imr: Convert to json-schema

Convert the Renesas R-Car Image Renderer Device Tree binding
documentation to json-schema.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

Documentation/devicetree/bindings/media/renesas,imr.txt

-Renesas R-Car Image Renderer (Distortion Correction Engine)
------------------------------------------------------------
-
-The image renderer, or the distortion correction engine, is a drawing processor
-with a simple instruction system capable of referencing video capture data or
-data in an external memory as 2D texture data and performing texture mapping
-and drawing with respect to any shape that is split into triangular objects.
-
-Required properties:
-
-- compatible: "renesas,<soctype>-imr-lx4", "renesas,imr-lx4" as a fallback for
-  the image renderer light extended 4 (IMR-LX4) found in the R-Car gen3 SoCs,
-  where the examples with <soctype> are:
-  - "renesas,r8a7795-imr-lx4" for R-Car H3,
-  - "renesas,r8a7796-imr-lx4" for R-Car M3-W.
-- reg: offset and length of the register block;
-- interrupts: single interrupt specifier;
-- clocks: single clock phandle/specifier pair;
-- power-domains: power domain phandle/specifier pair;
-- resets: reset phandle/specifier pair.
-
-Example:
-
-	imr-lx4@fe860000 {
-		compatible = "renesas,r8a7795-imr-lx4", "renesas,imr-lx4";
-		reg = <0 0xfe860000 0 0x2000>;
-		interrupts = <GIC_SPI 192 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&cpg CPG_MOD 823>;
-		power-domains = <&sysc R8A7795_PD_A3VC>;
-		resets = <&cpg 823>;
-	};

Documentation/devicetree/bindings/media/renesas,imr.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/renesas,imr.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas R-Car Image Renderer (Distortion Correction Engine)
+
+maintainers:
+  - Sergei Shtylyov <sergei.shtylyov@gmail.com>
+
+description: |
+  The image renderer, or the distortion correction engine, is a drawing
+  processor with a simple instruction system capable of referencing video
+  capture data or data in an external memory as 2D texture data and performing
+  texture mapping and drawing with respect to any shape that is split into
+  triangular objects.
+
+  The image renderer light extended 4 (IMR-LX4) is found in R-Car Gen3 SoCs.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - renesas,r8a7795-imr-lx4 # R-Car H3
+          - renesas,r8a7796-imr-lx4 # R-Car M3-W
+      - const: renesas,imr-lx4      # R-Car Gen3
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  power-domains:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - power-domains
+  - resets
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/r8a7795-cpg-mssr.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/power/r8a7795-sysc.h>
+
+    imr-lx4@fe860000 {
+            compatible = "renesas,r8a7795-imr-lx4", "renesas,imr-lx4";
+            reg = <0xfe860000 0x2000>;
+            interrupts = <GIC_SPI 192 IRQ_TYPE_LEVEL_HIGH>;
+            clocks = <&cpg CPG_MOD 823>;
+            power-domains = <&sysc R8A7795_PD_A3VC>;
+            resets = <&cpg 823>;
+    };