linux-kernel - Re: [PATCH v4 23/32] ASoC: dt-bindings: Add Q6USB backend bindings

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Date:   Wed, 26 Jul 2023 10:00:41 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Wesley Cheng <quic_wcheng@...cinc.com>, agross@...nel.org,
        andersson@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        catalin.marinas@....com, will@...nel.org, mathias.nyman@...el.com,
        gregkh@...uxfoundation.org, lgirdwood@...il.com,
        broonie@...nel.org, perex@...ex.cz, tiwai@...e.com,
        srinivas.kandagatla@...aro.org, bgoswami@...cinc.com,
        Thinh.Nguyen@...opsys.com
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-usb@...r.kernel.org, alsa-devel@...a-project.org,
        quic_jackp@...cinc.com, pierre-louis.bossart@...ux.intel.com,
        oneukum@...e.com, albertccwang@...gle.com, o-takashi@...amocchi.jp
Subject: Re: [PATCH v4 23/32] ASoC: dt-bindings: Add Q6USB backend bindings

On 25/07/2023 04:34, 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@...cinc.com>

A nit, subject: drop second/last, redundant "bindings". The
"dt-bindings" prefix is already stating that these are bindings.

> ---
>  .../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..77bc9b4c3c90
> --- /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 DPCM USB backend DAI
> +
> +maintainers:
> +  - Wesley Cheng <quic_wcheng@...cinc.com>
> +
> +description:
> +  The USB port is a supported AFE path on the Q6 DSP.  This ASoC DPCM
> +  backend DAI driver will communicate the required settings to the QC USB SND
> +  class 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.

You still refer to the drivers. I said this should be rephrased and you
confirmed that "driver" here means Linux. If you are adding bindings for
Linux drivers, then it won't work. Bindings are for hardware.


Also, missing $ref to dai-common.yaml


> +
> +properties:
> +  compatible:
> +    enum:
> +      - qcom,q6usb
> +


Best regards,
Krzysztof