xref: /openbmc/linux/Documentation/devicetree/bindings/display/bridge/adi,adv7533.yaml (revision b737da13)

# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/bridge/adi,adv7533.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Analog Devices ADV7533/35 HDMI Encoders

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

description: |
  The ADV7533 and ADV7535 are HDMI audio and video transmitters
  compatible with HDMI 1.4 and DVI 1.0. They support color space
  conversion, S/PDIF, CEC and HDCP. The transmitter input is MIPI DSI.

properties:
  compatible:
    enum:
      - adi,adv7533
      - adi,adv7535

  reg:
    description: |
      I2C slave addresses.

      The ADV7533/35 internal registers are split into four pages
      exposed through different I2C addresses, creating four register
      maps. Each map has it own I2C address and acts as a standard slave
      device on the I2C bus. The main address is mandatory, others are
      optional and revert to defaults if not specified.
    minItems: 1
    maxItems: 4

  reg-names:
    description:
      Names of maps with programmable addresses. It can contain any map
      needing a non-default address.
    minItems: 1
    items:
      - const: main
      - const: edid
      - const: cec
      - const: packet

  clocks:
    description: Reference to the CEC clock.
    maxItems: 1

  clock-names:
    const: cec

  interrupts:
    maxItems: 1

  pd-gpios:
    description: GPIO connected to the power down signal.
    maxItems: 1

  avdd-supply:
    description: A 1.8V supply that powers up the AVDD pin.

  dvdd-supply:
    description: A 1.8V supply that powers up the DVDD pin.

  pvdd-supply:
    description: A 1.8V supply that powers up the PVDD pin.

  a2vdd-supply:
    description: A 1.8V supply that powers up the A2VDD pin.

  v3p3-supply:
    description: A 3.3V supply that powers up the V3P3 pin.

  v1p2-supply:
    description:
      A supply that powers up the V1P2 pin. It can be either 1.2V
      or 1.8V for ADV7533 but only 1.8V for ADV7535.

  adi,disable-timing-generator:
    description:
      Disables the internal timing generator. The chip will rely on the
      sync signals in the DSI data lanes, rather than generating its own
      timings for HDMI output.
    type: boolean

  adi,dsi-lanes:
    description: Number of DSI data lanes connected to the DSI host.
    $ref: /schemas/types.yaml#/definitions/uint32
    enum: [ 1, 2, 3, 4 ]

  ports:
    description:
      The ADV7533/35 has two video ports and one audio port.
    $ref: /schemas/graph.yaml#/properties/ports

    properties:
      port@0:
        description:
          Video port for the DSI input. The remote endpoint phandle
          should be a reference to a valid mipi_dsi_host_device.
        $ref: /schemas/graph.yaml#/properties/port

      port@1:
        description: Video port for the HDMI output.
        $ref: /schemas/graph.yaml#/properties/port

      port@2:
        description: Audio port for the HDMI output.
        $ref: /schemas/graph.yaml#/properties/port

required:
  - compatible
  - reg
  - ports
  - adi,dsi-lanes
  - avdd-supply
  - dvdd-supply
  - pvdd-supply
  - a2vdd-supply
  - v3p3-supply

additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/irq.h>

    i2c@e6500000 {
        #address-cells = <1>;
        #size-cells = <0>;

        reg = <0 0xe6500000>;

        adv7533: hdmi@39 {
            compatible = "adi,adv7533";
            /*
             * The EDID page will be accessible on address 0x66 on the I2C
             * bus. All other maps continue to use their default addresses.
             */
            reg = <0x39>, <0x66>;
            reg-names = "main", "edid";
            interrupt-parent = <&gpio3>;
            interrupts = <29 IRQ_TYPE_EDGE_FALLING>;
            clocks = <&cec_clock>;
            clock-names = "cec";
            adi,dsi-lanes = <4>;
            avdd-supply = <&v1v8>;
            dvdd-supply = <&v1v8>;
            pvdd-supply = <&v1v8>;
            a2vdd-supply = <&v1v8>;
            v3p3-supply = <&v3v3>;

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

                port@0 {
                    reg = <0>;
                    adv7533_in: endpoint {
                        remote-endpoint = <&dsi_out>;
                    };
                };

                port@1 {
                    reg = <1>;
                    adv7533_out: endpoint {
                        remote-endpoint = <&hdmi_connector_in>;
                    };
                };

                port@2 {
                    reg = <2>;
                    codec_endpoint: endpoint {
                        remote-endpoint = <&i2s0_cpu_endpoint>;
                    };
                };
            };
        };
    };

...