Documentation/devicetree/bindings/display/bridge/renesas,dsi-csi2-tx.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/bridge/renesas,dsi-csi2-tx.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Renesas R-Car MIPI DSI/CSI-2 Encoder

maintainers:
  - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

description: |
  This binding describes the MIPI DSI/CSI-2 encoder embedded in the Renesas
  R-Car Gen4 SoCs. The encoder can operate in either DSI or CSI-2 mode, with up
  to four data lanes.

properties:
  compatible:
    enum:
      - renesas,r8a779a0-dsi-csi2-tx    # for V3U
      - renesas,r8a779g0-dsi-csi2-tx    # for V4H

  reg:
    maxItems: 1

  clocks:
    items:
      - description: Functional clock
      - description: DSI (and CSI-2) functional clock
      - description: PLL reference clock

  clock-names:
    items:
      - const: fck
      - const: dsi
      - const: pll

  power-domains:
    maxItems: 1

  resets:
    maxItems: 1

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

    properties:
      port@0:
        $ref: /schemas/graph.yaml#/properties/port
        description: Parallel input port

      port@1:
        $ref: /schemas/graph.yaml#/$defs/port-base
        unevaluatedProperties: false
        description: DSI/CSI-2 output port

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

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

            required:
              - data-lanes

    required:
      - port@0
      - port@1

required:
  - compatible
  - reg
  - clocks
  - power-domains
  - resets
  - ports

additionalProperties: false

examples:
  - |
    #include <dt-bindings/clock/r8a779a0-cpg-mssr.h>
    #include <dt-bindings/power/r8a779a0-sysc.h>

    dsi0: dsi-encoder@fed80000 {
        compatible = "renesas,r8a779a0-dsi-csi2-tx";
        reg = <0xfed80000 0x10000>;
        power-domains = <&sysc R8A779A0_PD_ALWAYS_ON>;
        clocks = <&cpg CPG_MOD 415>,
                 <&cpg CPG_CORE R8A779A0_CLK_DSI>,
                 <&cpg CPG_CORE R8A779A0_CLK_CP>;
        clock-names = "fck", "dsi", "pll";
        resets = <&cpg 415>;

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

            port@0 {
                reg = <0>;
                dsi0_in: endpoint {
                    remote-endpoint = <&du_out_dsi0>;
                };
            };

            port@1 {
                reg = <1>;
                dsi0_out: endpoint {
                    data-lanes = <1 2>;
                    remote-endpoint = <&sn65dsi86_in>;
                };
            };
        };
    };
...