linux-kernel - Re: [PATCH 3/3] dt-bindings: dsp: fsl: Document newly introduced fsl,properties

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Date:   Thu, 15 Jul 2021 08:59:21 -0600
From:   Rob Herring <robh+dt@...nel.org>
To:     Daniel Baluta <daniel.baluta@....nxp.com>
Cc:     Linux-ALSA <alsa-devel@...a-project.org>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>, devicetree@...r.kernel.org,
        Liam Girdwood <lgirdwood@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        kai.vehmanen@...ux.intel.com, Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Daniel Baluta <daniel.baluta@...il.com>,
        Daniel Baluta <daniel.baluta@....com>
Subject: Re: [PATCH 3/3] dt-bindings: dsp: fsl: Document newly introduced fsl,properties

On Thu, Jul 15, 2021 at 8:18 AM Daniel Baluta <daniel.baluta@....nxp.com> wrote:
>
> From: Daniel Baluta <daniel.baluta@....com>
>
> Document firmware-name, tplg-name and machine-drv-name properties.

That's obvious from the diff.

Why do you need these?

>
> Signed-off-by: Daniel Baluta <daniel.baluta@....com>
> ---
>  .../devicetree/bindings/dsp/fsl,dsp.yaml      | 20 +++++++++++++++++++
>  1 file changed, 20 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml b/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml
> index 7afc9f2be13a..8095aa178e7c 100644
> --- a/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml
> +++ b/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml
> @@ -60,6 +60,22 @@ properties:
>        used by DSP (see bindings/reserved-memory/reserved-memory.txt)
>      maxItems: 1
>
> +  firmware-name:
> +    $ref: /schemas/types.yaml#/definitions/string
> +    description:
> +      If present, name of the file within the firmware search path containing
> +      the DSP firmware loaded by SOF at DSP boot time.
> +
> +  tplg-name:
> +    $ref: /schemas/types.yaml#/definitions/string
> +    description:
> +      Should contain the audio topology file name loaded by SOF driver.

Is this some format the DSP requires? Why do we need a separate file?
This is defined by the board or user config?

> +
> +  machine-drv-name:
> +    $ref: /schemas/types.yaml#/definitions/string
> +    description:
> +      Contains the ASoC machine driver name used by SOF to handle DSP audio scenario.

Umm, no.

> +
>  required:
>    - compatible
>    - reg
> @@ -69,6 +85,8 @@ required:
>    - mboxes
>    - mbox-names
>    - memory-region
> +  - tplg-name
> +  - machine-drv-name
>
>  additionalProperties: false
>
> @@ -90,4 +108,6 @@ examples:
>          mbox-names = "txdb0", "txdb1", "rxdb0", "rxdb1";
>          mboxes = <&lsio_mu13 2 0>, <&lsio_mu13 2 1>, <&lsio_mu13 3 0>, <&lsio_mu13 3 1>;
>          memory-region = <&dsp_reserved>;
> +        tplg-name = "sof-imx8-wm8960.tplg";
> +        machine-drv-name = "asoc-simple-card";
>      };
> --
> 2.27.0
>