Documentation/devicetree/bindings/media/renesas,rzg2l-cru.yaml

# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
# Copyright (C) 2022 Renesas Electronics Corp.
%YAML 1.2
---
$id: http://devicetree.org/schemas/media/renesas,rzg2l-cru.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Renesas RZ/G2L (and alike SoC's) Camera Data Receiving Unit (CRU) Image processing

maintainers:
  - Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

description:
  The CRU image processing module is a data conversion module equipped with pixel
  color space conversion, LUT, pixel format conversion, etc. An MIPI CSI-2 input and
  parallel (including ITU-R BT.656) input are provided as the image sensor interface.

properties:
  compatible:
    items:
      - enum:
          - renesas,r9a07g044-cru       # RZ/G2{L,LC}
          - renesas,r9a07g054-cru       # RZ/V2L
      - const: renesas,rzg2l-cru

  reg:
    maxItems: 1

  interrupts:
    maxItems: 3

  interrupt-names:
    items:
      - const: image_conv
      - const: image_conv_err
      - const: axi_mst_err

  clocks:
    items:
      - description: CRU Main clock
      - description: CRU Register access clock
      - description: CRU image transfer clock

  clock-names:
    items:
      - const: video
      - const: apb
      - const: axi

  power-domains:
    maxItems: 1

  resets:
    items:
      - description: CRU_PRESETN reset terminal
      - description: CRU_ARESETN reset terminal

  reset-names:
    items:
      - const: presetn
      - const: aresetn

  ports:
    $ref: /schemas/graph.yaml#/properties/ports

    properties:
      port@0:
        $ref: /schemas/graph.yaml#/$defs/port-base
        unevaluatedProperties: false
        description:
          Input port node, single endpoint describing a parallel input source.

        properties:
          endpoint:
            $ref: video-interfaces.yaml#
            unevaluatedProperties: false

            properties:
              hsync-active: true
              vsync-active: true
              bus-width: true
              data-shift: true

      port@1:
        $ref: /schemas/graph.yaml#/properties/port
        description:
          Input port node, describing the Image Processing module connected to the
          CSI-2 receiver.

    required:
      - port@0
      - port@1

required:
  - compatible
  - reg
  - interrupts
  - interrupt-names
  - clocks
  - clock-names
  - resets
  - reset-names
  - power-domains

additionalProperties: false

examples:
  # Device node example with CSI-2
  - |
    #include <dt-bindings/clock/r9a07g044-cpg.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>

    cru: video@10830000 {
        compatible = "renesas,r9a07g044-cru", "renesas,rzg2l-cru";
        reg = <0x10830000 0x400>;
        interrupts = <GIC_SPI 167 IRQ_TYPE_LEVEL_HIGH>,
                     <GIC_SPI 168 IRQ_TYPE_LEVEL_HIGH>,
                     <GIC_SPI 169 IRQ_TYPE_LEVEL_HIGH>;
        interrupt-names = "image_conv", "image_conv_err", "axi_mst_err";
        clocks = <&cpg CPG_MOD R9A07G044_CRU_VCLK>,
                 <&cpg CPG_MOD R9A07G044_CRU_PCLK>,
                 <&cpg CPG_MOD R9A07G044_CRU_ACLK>;
        clock-names = "video", "apb", "axi";
        power-domains = <&cpg>;
        resets = <&cpg R9A07G044_CRU_PRESETN>,
                 <&cpg R9A07G044_CRU_ARESETN>;
        reset-names = "presetn", "aresetn";

        ports {
            #address-cells = <1>;
            #size-cells = <0>;

            port@0 {
                #address-cells = <1>;
                #size-cells = <0>;
                reg = <0>;

                cru_parallel_in: endpoint@0 {
                    reg = <0>;
                    remote-endpoint = <&ov5642>;
                    hsync-active = <1>;
                    vsync-active = <1>;
                };
            };

            port@1 {
                #address-cells = <1>;
                #size-cells = <0>;
                reg = <1>;

                cru_csi_in: endpoint@0 {
                    reg = <0>;
                    remote-endpoint = <&csi_cru_in>;
                };
            };
        };
    };