Commit 58c7ea6a authored by Wesley Cheng's avatar Wesley Cheng Committed by Greg Kroah-Hartman
Browse files

ASoC: dt-bindings: Add Q6USB backend 



Add a dt-binding to describe the definition of enabling the Q6 USB backend
device for audio offloading.  The node carries information, which is passed
along to the QC USB SND class driver counterpart.  These parameters will be
utilized during QMI stream enable requests.

Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarWesley Cheng <quic_wcheng@quicinc.com>
Link: https://lore.kernel.org/r/20240217001017.29969-36-quic_wcheng@quicinc.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 9affb1d9

Documentation/devicetree/bindings/sound/qcom,q6usb.yaml

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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/sound/qcom,q6usb.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: Qualcomm ASoC DPCM USB backend DAI



maintainers:

  - Wesley Cheng <quic_wcheng@quicinc.com>



description:

  The USB port is a supported AFE path on the Q6 DSP.  This ASoC DPCM

  backend DAI will communicate the required settings to initialize the

  XHCI host controller properly for enabling the offloaded audio stream.

  Parameters defined under this node will carry settings, which will be

  passed along during the QMI stream enable request and configuration of

  the XHCI host controller.



allOf:

  - $ref: dai-common.yaml#



properties:

  compatible:

    enum:

      - qcom,q6usb



  iommus:

    maxItems: 1



  "#sound-dai-cells":

    const: 1



  qcom,usb-audio-intr-idx:

    description:

      Desired XHCI interrupter number to use.  Depending on the audio DSP

      on the platform, it will operate on a specific XHCI interrupter.

    $ref: /schemas/types.yaml#/definitions/uint16

    maximum: 8



required:

  - compatible

  - "#sound-dai-cells"

  - qcom,usb-audio-intr-idx



additionalProperties: false



examples:

  - |

    dais {

      compatible = "qcom,q6usb";

      #sound-dai-cells = <1>;

      iommus = <&apps_smmu 0x180f 0x0>;

      qcom,usb-audio-intr-idx = /bits/ 16 <2>;

    };