xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/display/bridge/cdns,dsi.yaml

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

title: Cadence DSI bridge

maintainers:
  - Boris Brezillon <boris.brezillon@bootlin.com>

description: |
   CDNS DSI is a bridge device which converts DPI to DSI

properties:
  compatible:
    enum:
      - cdns,dsi
      - ti,j721e-dsi

  reg:
    minItems: 1
    items:
      - description:
          Register block for controller's registers.
      - description:
          Register block for wrapper settings registers in case of TI J7 SoCs.

  clocks:
    items:
      - description: PSM clock, used by the IP
      - description: sys clock, used by the IP

  clock-names:
    items:
      - const: dsi_p_clk
      - const: dsi_sys_clk

  phys:
    maxItems: 1

  phy-names:
    const: dphy

  interrupts:
    maxItems: 1

  resets:
    maxItems: 1

  reset-names:
    const: dsi_p_rst

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

    properties:
      port@0:
        $ref: /schemas/graph.yaml#/properties/port
        description:
          Output port representing the DSI output. It can have
          at most 4 endpoints. The endpoint number is directly encoding
          the DSI virtual channel used by this device.

      port@1:
        $ref: /schemas/graph.yaml#/properties/port
        description:
          Input port representing the DPI input.

    required:
      - port@1

allOf:
  - $ref: ../dsi-controller.yaml#

  - if:
      properties:
        compatible:
          contains:
            const: ti,j721e-dsi
    then:
      properties:
        reg:
          minItems: 2
          maxItems: 2
        power-domains:
          maxItems: 1
    else:
      properties:
        reg:
          maxItems: 1

required:
  - compatible
  - reg
  - interrupts
  - clocks
  - clock-names
  - phys
  - phy-names
  - ports

unevaluatedProperties: false

examples:
  - |
    bus {
        #address-cells = <2>;
        #size-cells = <2>;

        dsi@fd0c0000 {
            compatible = "cdns,dsi";
            reg = <0x0 0xfd0c0000 0x0 0x1000>;
            clocks = <&pclk>, <&sysclk>;
            clock-names = "dsi_p_clk", "dsi_sys_clk";
            interrupts = <1>;
            phys = <&dphy0>;
            phy-names = "dphy";

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

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

                port@1 {
                    reg = <1>;
                    endpoint {
                        remote-endpoint = <&xxx_dpi_output>;
                    };
                };
            };

            panel@0 {
                compatible = "panasonic,vvx10f034n00";
                reg = <0>;
                power-supply = <&vcc_lcd_reg>;
            };
        };
    };

  - |
    bus {
        #address-cells = <2>;
        #size-cells = <2>;

        dsi@fd0c0000 {
            compatible = "cdns,dsi";
            reg = <0x0 0xfd0c0000 0x0 0x1000>;
            clocks = <&pclk>, <&sysclk>;
            clock-names = "dsi_p_clk", "dsi_sys_clk";
            interrupts = <1>;
            phys = <&dphy1>;
            phy-names = "dphy";

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

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

                    endpoint@0 {
                        reg = <0>;
                        remote-endpoint = <&dsi_panel_input>;
                    };
                };

                port@1 {
                    reg = <1>;
                    endpoint {
                        remote-endpoint = <&xxx_dpi_output>;
                    };
                };
            };
        };
    };