Documentation/devicetree/bindings/sound/fsl,spdif.yaml

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

title: Freescale Sony/Philips Digital Interface Format (S/PDIF) Controller

maintainers:
  - Shengjiu Wang <shengjiu.wang@nxp.com>

description: |
  The Freescale S/PDIF audio block is a stereo transceiver that allows the
  processor to receive and transmit digital audio via an coaxial cable or
  a fibre cable.

properties:
  compatible:
    enum:
      - fsl,imx35-spdif
      - fsl,vf610-spdif
      - fsl,imx6sx-spdif
      - fsl,imx8qm-spdif

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  dmas:
    items:
      - description: DMA controller phandle and request line for RX
      - description: DMA controller phandle and request line for TX

  dma-names:
    items:
      - const: rx
      - const: tx

  clocks:
    items:
      - description: The core clock of spdif controller.
      - description: Clock for tx0 and rx0.
      - description: Clock for tx1 and rx1.
      - description: Clock for tx2 and rx2.
      - description: Clock for tx3 and rx3.
      - description: Clock for tx4 and rx4.
      - description: Clock for tx5 and rx5.
      - description: Clock for tx6 and rx6.
      - description: Clock for tx7 and rx7.
      - description: The spba clock is required when SPDIF is placed as a bus
          slave of the Shared Peripheral Bus and when two or more bus masters
          (CPU, DMA or DSP) try to access it. This property is optional depending
          on the SoC design.
    minItems: 9

  clock-names:
    items:
      - const: core
      - const: rxtx0
      - const: rxtx1
      - const: rxtx2
      - const: rxtx3
      - const: rxtx4
      - const: rxtx5
      - const: rxtx6
      - const: rxtx7
      - const: spba
    minItems: 9

  big-endian:
    $ref: /schemas/types.yaml#/definitions/flag
    description: |
      If this property is absent, the native endian mode will be in use
      as default, or the big endian mode will be in use for all the device
      registers. Set this flag for HCDs with big endian descriptors and big
      endian registers.

required:
  - compatible
  - reg
  - interrupts
  - dmas
  - dma-names
  - clocks
  - clock-names

additionalProperties: false

examples:
  - |
    spdif@2004000 {
        compatible = "fsl,imx35-spdif";
        reg = <0x02004000 0x4000>;
        interrupts = <0 52 0x04>;
        dmas = <&sdma 14 18 0>,
               <&sdma 15 18 0>;
        dma-names = "rx", "tx";
        clocks = <&clks 197>, <&clks 3>,
                 <&clks 197>, <&clks 107>,
                 <&clks 0>, <&clks 118>,
                 <&clks 62>, <&clks 139>,
                 <&clks 0>;
        clock-names = "core", "rxtx0",
                      "rxtx1", "rxtx2",
                      "rxtx3", "rxtx4",
                      "rxtx5", "rxtx6",
                      "rxtx7";
        big-endian;
    };