linux-loongson/Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.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-csi2.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Renesas RZ/G2L (and alike SoC's) MIPI CSI-2 receiver

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

description:
  The CSI-2 receiver device provides MIPI CSI-2 capabilities for the Renesas RZ/G2L
  (and alike SoCs). MIPI CSI-2 is part of the CRU block which is used in conjunction
  with the Image Processing module, which provides the video capture capabilities.

properties:
  compatible:
    oneOf:
      - items:
          - enum:
              - renesas,r9a07g043-csi2 # RZ/G2UL
              - renesas,r9a07g044-csi2 # RZ/G2{L,LC}
              - renesas,r9a07g054-csi2 # RZ/V2L
          - const: renesas,rzg2l-csi2
      - items:
          - const: renesas,r9a09g047-csi2 # RZ/G3E
          - const: renesas,r9a09g057-csi2
      - const: renesas,r9a09g057-csi2 # RZ/V2H(P)

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    oneOf:
      - items:
          - description: Internal clock for connecting CRU and MIPI
          - description: CRU Main clock
          - description: CRU Register access clock
      - items:
          - description: CRU Main clock
          - description: CRU Register access clock

  clock-names:
    oneOf:
      - items:
          - const: system
          - const: video
          - const: apb
      - items:
          - const: video
          - const: apb

  power-domains:
    maxItems: 1

  resets:
    items:
      - description: CRU_PRESETN reset terminal
      - description: D-PHY reset (CRU_CMN_RSTB or CRU_n_S_RESETN)

  reset-names:
    items:
      - const: presetn
      - const: cmn-rstb

  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 the CSI-2 transmitter.

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

            properties:
              data-lanes:
                minItems: 1
                maxItems: 4
                items:
                  maximum: 4

            required:
              - clock-lanes
              - data-lanes

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

    required:
      - port@0
      - port@1

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

allOf:
  - if:
      properties:
        compatible:
          contains:
            const: renesas,r9a09g057-csi2
    then:
      properties:
        clocks:
          maxItems: 2
        clock-names:
          maxItems: 2
    else:
      properties:
        clocks:
          minItems: 3
        clock-names:
          minItems: 3

additionalProperties: false

examples:
  - |
    #include <dt-bindings/clock/r9a07g044-cpg.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>

    csi: csi@10830400 {
        compatible = "renesas,r9a07g044-csi2", "renesas,rzg2l-csi2";
        reg = <0x10830400 0xfc00>;
        interrupts = <GIC_SPI 166 IRQ_TYPE_LEVEL_HIGH>;
        clocks = <&cpg CPG_MOD R9A07G044_CRU_SYSCLK>,
                 <&cpg CPG_MOD R9A07G044_CRU_VCLK>,
                 <&cpg CPG_MOD R9A07G044_CRU_PCLK>;
        clock-names = "system", "video", "apb";
        power-domains = <&cpg>;
        resets = <&cpg R9A07G044_CRU_PRESETN>,
                 <&cpg R9A07G044_CRU_CMN_RSTB>;
        reset-names = "presetn", "cmn-rstb";

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

            port@0 {
                reg = <0>;

                csi2_in: endpoint {
                    clock-lanes = <0>;
                    data-lanes = <1 2>;
                    remote-endpoint = <&ov5645_ep>;
                };
            };

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

                reg = <1>;

                csi2cru: endpoint@0 {
                    reg = <0>;
                    remote-endpoint = <&crucsi2>;
                };
            };
        };
    };