xref: /openbmc/linux/Documentation/devicetree/bindings/display/bridge/nxp,tda998x.yaml (revision 66c98360)

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/bridge/nxp,tda998x.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: NXP TDA998x HDMI transmitter

maintainers:
  - Russell King <linux@armlinux.org.uk>

properties:
  compatible:
    const: nxp,tda998x

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  video-ports:
    $ref: /schemas/types.yaml#/definitions/uint32
    default: 0x230145
    maximum: 0xffffff
    description:
      24 bits value which defines how the video controller output is wired to
      the TDA998x input.

  audio-ports:
    description:
      Array of 8-bit values, 2 values per DAI (Documentation/sound/soc/dai.rst).
      The implementation allows one or two DAIs.
      If two DAIs are defined, they must be of different type.
    $ref: /schemas/types.yaml#/definitions/uint32-matrix
    items:
      minItems: 1
      items:
        - description: |
            The first value defines the DAI type: TDA998x_SPDIF or TDA998x_I2S
            (see include/dt-bindings/display/tda998x.h).
        - description:
            The second value defines the tda998x AP_ENA reg content when the
            DAI in question is used.

  '#sound-dai-cells':
    enum: [ 0, 1 ]

  nxp,calib-gpios:
    maxItems: 1
    description:
      Calibration GPIO, which must correspond with the gpio used for the
      TDA998x interrupt pin.

  port:
    $ref: /schemas/graph.yaml#/properties/port
    description: Parallel input port

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

    properties:
      port@0:
        type: object
        description: Parallel input port

      port@1:
        type: object
        description: HDMI output port

required:
  - compatible
  - reg

oneOf:
  - required:
      - port
  - required:
      - ports

additionalProperties: false

examples:
  - |
    #include <dt-bindings/display/tda998x.h>
    #include <dt-bindings/interrupt-controller/irq.h>

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

        tda998x: hdmi-encoder@70 {
            compatible = "nxp,tda998x";
            reg = <0x70>;
            interrupt-parent = <&gpio0>;
            interrupts = <27 IRQ_TYPE_EDGE_FALLING>;
            video-ports = <0x230145>;

            #sound-dai-cells = <1>;
                         /* DAI-format / AP_ENA reg value */
            audio-ports = <TDA998x_SPDIF 0x04>,
                          <TDA998x_I2S 0x03>;

            port {
                tda998x_in: endpoint {
                    remote-endpoint = <&lcdc_0>;
                };
            };
        };
    };