xref: /linux/Documentation/devicetree/bindings/display/verisilicon,dc.yaml (revision 4a57e0913e8c7fff407e97909f4ae48caa84d612)

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

title: Verisilicon DC-series display controllers

maintainers:
  - Icenowy Zheng <uwu@icenowy.me>

properties:
  $nodename:
    pattern: "^display@[0-9a-f]+$"

  compatible:
    items:
      - enum:
          - thead,th1520-dc8200
      - const: verisilicon,dc # DC IPs have discoverable ID/revision registers

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    items:
      - description: DC Core clock
      - description: DMA AXI bus clock
      - description: Configuration AHB bus clock
      - description: Pixel clock of output 0
      - description: Pixel clock of output 1

  clock-names:
    items:
      - const: core
      - const: axi
      - const: ahb
      - const: pix0
      - const: pix1

  resets:
    items:
      - description: DC Core reset
      - description: DMA AXI bus reset
      - description: Configuration AHB bus reset

  reset-names:
    items:
      - const: core
      - const: axi
      - const: ahb

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

    properties:
      port@0:
        $ref: /schemas/graph.yaml#/properties/port
        description: The first output channel , endpoint 0 should be
          used for DPI format output and endpoint 1 should be used
          for DP format output.

      port@1:
        $ref: /schemas/graph.yaml#/properties/port
        description: The second output channel if the DC variant
          supports. Follow the same endpoint addressing rule with
          the first port.

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

additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/irq.h>
    #include <dt-bindings/clock/thead,th1520-clk-ap.h>
    #include <dt-bindings/reset/thead,th1520-reset.h>
    soc {
      #address-cells = <2>;
      #size-cells = <2>;

      display@ffef600000 {
        compatible = "thead,th1520-dc8200", "verisilicon,dc";
        reg = <0xff 0xef600000 0x0 0x100000>;
        interrupts = <93 IRQ_TYPE_LEVEL_HIGH>;
        clocks = <&clk_vo CLK_DPU_CCLK>,
                 <&clk_vo CLK_DPU_ACLK>,
                 <&clk_vo CLK_DPU_HCLK>,
                 <&clk_vo CLK_DPU_PIXELCLK0>,
                 <&clk_vo CLK_DPU_PIXELCLK1>;
        clock-names = "core", "axi", "ahb", "pix0", "pix1";
        resets = <&rst TH1520_RESET_ID_DPU_CORE>,
                 <&rst TH1520_RESET_ID_DPU_AXI>,
                 <&rst TH1520_RESET_ID_DPU_AHB>;
        reset-names = "core", "axi", "ahb";

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

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

            dpu_out_dp1: endpoint@1 {
              reg = <1>;
              remote-endpoint = <&hdmi_in>;
            };
          };
        };
      };
    };