On 09/03/2023 00:57, Wesley Cheng wrote:
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.
Signed-off-by: Wesley Cheng quic_wcheng@quicinc.com
.../bindings/sound/qcom,q6usb-dais.yaml | 49 +++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/qcom,q6usb-dais.yaml
diff --git a/Documentation/devicetree/bindings/sound/qcom,q6usb-dais.yaml b/Documentation/devicetree/bindings/sound/qcom,q6usb-dais.yaml new file mode 100644 index 000000000000..8477abc511dd --- /dev/null +++ b/Documentation/devicetree/bindings/sound/qcom,q6usb-dais.yaml @@ -0,0 +1,49 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/qcom,q6usb-dais.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml#
+title: Qualcomm ASoC USB backend DAI
+maintainers:
- Wesley Cheng quic_wcheng@quicinc.com
+description:
- The Q6USB backend is a supported AFE port on the Q6DSP. This backend
- driver will communicate the required settings to the QC USB SND class
What does the "driver" mean? Linux driver? Then drop and focus on hardware/Q6DSP.
- driver for properly enabling the audio stream. Parameters defined
- under this node will carry settings, which will be passed along during
- the QMI stream enable request.
+properties:
- compatible:
- enum:
- qcom,q6usb-dais
Can q6usb mean anything else? Why "-dais" suffix?
- iommus:
- maxItems: 1
- "#sound-dai-cells":
- const: 1
- qcom,usb-audio-intr-num:
- description:
Desired XHCI interrupter number to use.- $ref: /schemas/types.yaml#/definitions/uint32
Why this should be configurable per board or SoC? It's the first use in DT and in the same time sounds generic...
+required:
- compatible
- "#sound-dai-cells"
- qcom,usb-audio-intr-num
+additionalProperties: false
+examples:
- |
- dais {
compatible = "qcom,q6usb-dais";#sound-dai-cells = <1>;iommus = <&apps_smmu 0x180f 0x0>;qcom,usb-audio-intr-num = <2>;- };
Best regards, Krzysztof