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

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

title: NXP Audio Transceiver (XCVR) Controller

maintainers:
  - Viorel Suman <viorel.suman@nxp.com>

description: |
  NXP XCVR (Audio Transceiver) is a on-chip functional module
  that allows CPU to receive and transmit digital audio via
  HDMI2.1 eARC, HDMI1.4 ARC and SPDIF.

properties:
  $nodename:
    pattern: "^xcvr@.*"

  compatible:
    enum:
      - fsl,imx8mp-xcvr

  reg:
    items:
      - description: 20K RAM for code and data
      - description: registers space
      - description: RX FIFO address
      - description: TX FIFO address

  reg-names:
    items:
      - const: ram
      - const: regs
      - const: rxfifo
      - const: txfifo

  interrupts:
    maxItems: 1

  clocks:
    items:
      - description: Peripheral clock
      - description: PHY clock
      - description: SPBA clock
      - description: PLL clock

  clock-names:
    items:
      - const: ipg
      - const: phy
      - const: spba
      - const: pll_ipg

  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

  resets:
    maxItems: 1

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

additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/clock/imx8mp-clock.h>
    #include <dt-bindings/reset/imx8mp-reset.h>

    xcvr: xcvr@30cc0000 {
           compatible = "fsl,imx8mp-xcvr";
           reg = <0x30cc0000 0x800>,
                 <0x30cc0800 0x400>,
                 <0x30cc0c00 0x080>,
                 <0x30cc0e00 0x080>;
           reg-names = "ram", "regs", "rxfifo", "txfifo";
           interrupts = <0x0 128 IRQ_TYPE_LEVEL_HIGH>;
           clocks = <&audiomix_clk IMX8MP_CLK_AUDIOMIX_EARC_IPG>,
                    <&audiomix_clk IMX8MP_CLK_AUDIOMIX_EARC_PHY>,
                    <&audiomix_clk IMX8MP_CLK_AUDIOMIX_SPBA2_ROOT>,
                    <&audiomix_clk IMX8MP_CLK_AUDIOMIX_AUDPLL_ROOT>;
           clock-names = "ipg", "phy", "spba", "pll_ipg";
           dmas = <&sdma2 30 2 0>, <&sdma2 31 2 0>;
           dma-names = "rx", "tx";
           resets = <&audiomix_reset 0>;
    };