diff mbox series

[v6,23/33] ASoC: dt-bindings: Add Q6USB backend

Message ID 20230916001026.315-24-quic_wcheng@quicinc.com
State New
Headers
Series Introduce QC USB SND audio offloading support |

Commit Message

Wesley Cheng Sept. 16, 2023, 12:10 a.m. UTC 
  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>
---
 .../devicetree/bindings/sound/qcom,q6usb.yaml | 55 +++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/qcom,q6usb.yaml

Comments

Konrad Dybcio Sept. 16, 2023, 12:37 a.m. UTC | #1 
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@quicinc.com>
> ---
>  .../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@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-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
diff mbox series

Patch

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@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-num:
+    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-num
+
+additionalProperties: false
+
+examples:
+  - |
+    dais {
+      compatible = "qcom,q6usb";
+      #sound-dai-cells = <1>;
+      iommus = <&apps_smmu 0x180f 0x0>;
+      qcom,usb-audio-intr-num = <2>;
+    };