On 16.09.2023 02:10, 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@xxxxxxxxxxx> > --- > .../devicetree/bindings/sound/qcom,q6usb.yaml | 55 +++++++++++++++++++ > 1 file changed, 55 insertions(+) > create mode 100644 Documentation/devicetree/bindings/sound/qcom,q6usb.yaml > > diff --git a/Documentation/devicetree/bindings/sound/qcom,q6usb.yaml b/Documentation/devicetree/bindings/sound/qcom,q6usb.yaml > new file mode 100644 > index 000000000000..51ff0b1ffa2d > --- /dev/null > +++ b/Documentation/devicetree/bindings/sound/qcom,q6usb.yaml > @@ -0,0 +1,55 @@ > +# 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 DPCM USB backend DAI > + > +maintainers: > + - Wesley Cheng <quic_wcheng@xxxxxxxxxxx> > + > +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-num: > + description: > + Desired XHCI interrupter number to use. Depending on the audio DSP > + on the platform, it will operate on a specific XHCI interrupter. So is this the number of interrupters to be used or the index of a single interrupter? If the latter, then "num" is definitely way too ambiguous. Konrad
