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