| Message ID | 20230308235751.495-22-quic_wcheng@quicinc.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Introduce QC USB SND audio offloading support | expand |
On 09/03/2023 00:57, Wesley Cheng wrote: > Add an example on enabling of USB offload for the Q6DSP. The routing can > be done by the mixer, which can pass the multimedia stream to the USB > backend. > > Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> You still miss binding change to APR/GPR. Where is the USB DAI going to sit? Best regards, Krzysztof
Hi Krzysztof, On 3/10/2023 12:56 AM, Krzysztof Kozlowski wrote: > On 09/03/2023 00:57, Wesley Cheng wrote: >> Add an example on enabling of USB offload for the Q6DSP. The routing can >> be done by the mixer, which can pass the multimedia stream to the USB >> backend. >> >> Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com> > > > Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> > > You still miss binding change to APR/GPR. Where is the USB DAI going to sit? > My initial idea is to have it as part of the q6afe APR node (as a child). It would need to issues some transactions over APR to the Q6AFE port on the audio DSP, which was the main reason for this. Something like: q6afe: apr-service@4 { compatible = "qcom,q6afe"; reg = <APR_SVC_AFE>; q6afedai: dais { compatible = "qcom,q6afe-dais"; #address-cells = <1>; #size-cells = <0>; #sound-dai-cells = <1>; }; ... usbdai: usbd { compatible = "qcom,q6usb"; #sound-dai-cells = <1>; iommus = <&apps_smmu 0x180f 0x0>; qcom,usb-audio-stream-id = <0xf>; qcom,usb-audio-intr-num = <2>; }; }; I think the only modification I would probably make is to have an example of how to add the q6usb node to enable the audio offloading. Thanks, Wesley Cheng > > > Best regards, > Krzysztof >
diff --git a/Documentation/devicetree/bindings/sound/qcom,sm8250.yaml b/Documentation/devicetree/bindings/sound/qcom,sm8250.yaml index 262de7a60a73..13145e010ddf 100644 --- a/Documentation/devicetree/bindings/sound/qcom,sm8250.yaml +++ b/Documentation/devicetree/bindings/sound/qcom,sm8250.yaml @@ -220,6 +220,21 @@ examples: sound-dai = <&vamacro 0>; }; }; + + usb-dai-link { + link-name = "USB Playback"; + cpu { + sound-dai = <&q6afedai USB_RX>; + }; + + codec { + sound-dai = <&usbdai USB_RX>; + }; + + platform { + sound-dai = <&q6routing>; + }; + }; }; - |
Add an example on enabling of USB offload for the Q6DSP. The routing can be done by the mixer, which can pass the multimedia stream to the USB backend. Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com> --- .../devicetree/bindings/sound/qcom,sm8250.yaml | 15 +++++++++++++++ 1 file changed, 15 insertions(+)