dt-bindings: media: Add bindings for the RZ/V2H(P) IVC block

The RZ/V2H(P) SoC has a block called the Input Video Control block which
feeds image data into the Image Signal Processor. Add dt bindings to
describe the IVC.

Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Daniel Scally <[e-mail]>
Signed-off-by: Jacopo Mondi <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>

Documentation/devicetree/bindings/media/renesas,r9a09g057-ivc.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/renesas,r9a09g057-ivc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas RZ/V2H(P) Input Video Control Block
+
+maintainers:
+  - Daniel Scally <[e-mail]>
+
+description:
+  The IVC block is a module that takes video frames from memory and feeds them
+  to the Image Signal Processor for processing.
+
+properties:
+  compatible:
+    const: renesas,r9a09g057-ivc # RZ/V2H(P)
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Input Video Control block register access clock
+      - description: Video input data AXI bus clock
+      - description: ISP system clock
+
+  clock-names:
+    items:
+      - const: reg
+      - const: axi
+      - const: isp
+
+  power-domains:
+    maxItems: 1
+
+  resets:
+    items:
+      - description: Input Video Control block register access reset
+      - description: Video input data AXI bus reset
+      - description: ISP core reset
+
+  reset-names:
+    items:
+      - const: reg
+      - const: axi
+      - const: isp
+
+  port:
+    $ref: /schemas/graph.yaml#/properties/port
+    description: Output parallel video bus
+
+    properties:
+      endpoint:
+        $ref: /schemas/graph.yaml#/properties/endpoint
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - power-domains
+  - resets
+  - reset-names
+  - port
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/renesas,r9a09g057-cpg.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    isp-input@16040000 {
+      compatible = "renesas,r9a09g057-ivc";
+      reg = <0x16040000 0x230>;
+
+      clocks = <&cpg CPG_MOD 0xe3>,
+               <&cpg CPG_MOD 0xe4>,
+               <&cpg CPG_MOD 0xe5>;
+      clock-names = "reg", "axi", "isp";
+
+      power-domains = <&cpg>;
+
+      resets = <&cpg 0xd4>,
+               <&cpg 0xd1>,
+               <&cpg 0xd3>;
+      reset-names = "reg", "axi", "isp";
+
+      interrupts = <GIC_SPI 861 IRQ_TYPE_EDGE_RISING>;
+
+      port {
+        ivc_out: endpoint {
+          remote-endpoint = <&isp_in>;
+        };
+      };
+    };
+...