Brooklyn/Documentation/devicetree/bindings/display/brcm,bcm2835-hdmi.yaml

# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/brcm,bcm2835-hdmi.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Broadcom VC4 (VideoCore4) HDMI Controller

maintainers:
  - Eric Anholt <[email protected]>

properties:
  compatible:
    enum:
      - brcm,bcm2835-hdmi
      - brcm,bcm2711-hdmi0
      - brcm,bcm2711-hdmi1

  reg:
    oneOf:
      - items:
        - description: HDMI register range
        - description: HD register range

      - 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

  interrupts:
    minItems: 2

  clocks:
    oneOf:
      - items:
        - description: The pixel clock
        - description: The HDMI state machine clock

      - items:
        - description: The HDMI state machine clock

  clock-names:
    oneOf:
      - items:
        - const: pixel
        - const: hdmi

      - const: hdmi

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

  hpd-gpios:
    maxItems: 1
    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

required:
  - compatible
  - reg
  - clocks
  - ddc

additionalProperties: false

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

then:
  properties:
    reg:
      minItems: 9

    clocks:
      maxItems: 1

    clock-names:
      maxItems: 1

  required:
    - reg-names
    - resets

else:
  properties:
    reg:
      maxItems: 2

    clocks:
      minItems: 2

    clock-names:
      minItems: 2

  required:
    - interrupts

examples:
  - |
    #include <dt-bindings/clock/bcm2835.h>
    #include <dt-bindings/gpio/gpio.h>

    hdmi: hdmi@7e902000 {
        compatible = "brcm,bcm2835-hdmi";
        reg = <0x7e902000 0x600>,
              <0x7e808000 0x100>;
        interrupts = <2 8>, <2 9>;
        ddc = <&i2c2>;
        hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
        clocks = <&clocks BCM2835_PLLH_PIX>,
                 <&clocks BCM2835_CLOCK_HSM>;
        clock-names = "pixel", "hdmi";
    };

  - |
    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>;
        clock-names = "hdmi";
        resets = <&dvp 0>;
        ddc = <&ddc0>;
    };

...