xref: /OK3568_Linux_fs/kernel/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml (revision 4882a59341e53eb6f0b4789bf948001014eff981)

# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/brcm,bcm2711-hdmi.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Broadcom BCM2711 HDMI Controller Device Tree Bindings

maintainers:
  - Eric Anholt <eric@anholt.net>

properties:
  compatible:
    enum:
      - brcm,bcm2711-hdmi0
      - brcm,bcm2711-hdmi1

  reg:
    items:
      - description: HDMI controller register range
      - description: DVP register range
      - description: HDMI PHY register range
      - description: Rate Manager register range
      - description: Packet RAM register range
      - description: Metadata RAM register range
      - description: CSC register range
      - description: CEC register range
      - description: HD register range

  reg-names:
    items:
      - const: hdmi
      - const: dvp
      - const: phy
      - const: rm
      - const: packet
      - const: metadata
      - const: csc
      - const: cec
      - const: hd

  clocks:
    items:
      - description: The HDMI state machine clock
      - description: The Pixel BVB clock
      - description: The HDMI Audio parent clock
      - description: The HDMI CEC parent clock

  clock-names:
    items:
      - const: hdmi
      - const: bvb
      - const: audio
      - const: cec

  ddc:
    allOf:
      - $ref: /schemas/types.yaml#/definitions/phandle
    description: >
      Phandle of the I2C controller used for DDC EDID probing

  hpd-gpios:
    description: >
      The GPIO pin for the HDMI hotplug detect (if it doesn't appear
      as an interrupt/status bit in the HDMI controller itself)

  dmas:
    maxItems: 1
    description: >
      Should contain one entry pointing to the DMA channel used to
      transfer audio data.

  dma-names:
    const: audio-rx

  resets:
    maxItems: 1

  wifi-2.4ghz-coexistence:
    type: boolean
    description: >
      Should the pixel frequencies in the WiFi frequencies range be
      avoided?

required:
  - compatible
  - reg
  - reg-names
  - clocks
  - resets
  - ddc

additionalProperties: false

examples:
  - |
    hdmi0: hdmi@7ef00700 {
        compatible = "brcm,bcm2711-hdmi0";
        reg = <0x7ef00700 0x300>,
              <0x7ef00300 0x200>,
              <0x7ef00f00 0x80>,
              <0x7ef00f80 0x80>,
              <0x7ef01b00 0x200>,
              <0x7ef01f00 0x400>,
              <0x7ef00200 0x80>,
              <0x7ef04300 0x100>,
              <0x7ef20000 0x100>;
        reg-names = "hdmi",
                    "dvp",
                    "phy",
                    "rm",
                    "packet",
                    "metadata",
                    "csc",
                    "cec",
                    "hd";
        clocks = <&firmware_clocks 13>, <&firmware_clocks 14>, <&dvp 1>, <&clk_27MHz>;
        clock-names = "hdmi", "bvb", "audio", "cec";
        resets = <&dvp 0>;
        ddc = <&ddc0>;
    };

...