linux-kernel - Re: [PATCH v2 2/8] dt-bindings: dsp: fsl,dsp: Add resets property

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Message-ID: <Z7ZMoReqEGcSManv@lizhi-Precision-Tower-5810>
Date: Wed, 19 Feb 2025 16:26:57 -0500
From: Frank Li <Frank.li@....com>
To: Daniel Baluta <daniel.baluta@....com>
Cc: p.zabel@...gutronix.de, robh@...nel.org, shawnguo@...nel.org,
	krzk+dt@...nel.org, conor+dt@...nel.org, s.hauer@...gutronix.de,
	kernel@...gutronix.de, festevam@...il.com,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	mathieu.poirier@...aro.org, shengjiu.wang@....com, peng.fan@....com,
	laurentiu.mihalcea@....com, iuliana.prodan@....com
Subject: Re: [PATCH v2 2/8] dt-bindings: dsp: fsl,dsp: Add resets property

On Wed, Feb 19, 2025 at 09:20:56PM +0200, Daniel Baluta wrote:
> On i.MX8MP we introduced support for using a reset controller
> to control DSP operation.
>
> This patch adds reset property which is required for i.MX8MP.

Avoid words "this patch" according to kernel submit patch document.

Just said:  Add reset property ...

>
> Signed-off-by: Daniel Baluta <daniel.baluta@....com>
> ---
>  .../devicetree/bindings/dsp/fsl,dsp.yaml      | 19 ++++++++++++++++++-
>  1 file changed, 18 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml b/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml
> index ab93ffd3d2e5..923e7f079f1b 100644
> --- a/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml
> +++ b/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml
> @@ -82,6 +82,13 @@ properties:
>      description:
>        Phandle to syscon block which provide access for processor enablement
>
> +  resets:
> +    description:
> +      A pair consisting of phandle to audio-blk-control and an index referencing
> +      the DSP Run/Stall bit in audiomix registers.
> +      See include/dt-bindings/reset/imx8mp-reset-audiomix.h for each index meaning.

Generally, needn't description for such common property. Or just said
for example, i.MX8MP, ... , because it may change to difference reset
providor in future.

Anyway, I think it is fine leave here.

Reviewed-by: Frank Li <Frank.Li@....com>

> +    maxItems: 1
> +
>  required:
>    - compatible
>    - reg
> @@ -164,6 +171,16 @@ allOf:
>              - const: txdb1
>              - const: rxdb0
>              - const: rxdb1
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - fsl,imx8mp-dsp
> +              - fsl,imx8mp-hifi4
> +    then:
> +      required:
> +        - "resets"
>
>  additionalProperties: false
>
> @@ -220,5 +237,5 @@ examples:
>                 <&mu2 3 0>;
>        memory-region = <&dsp_vdev0buffer>, <&dsp_vdev0vring0>,
>                        <&dsp_vdev0vring1>, <&dsp_reserved>;
> -      fsl,dsp-ctrl = <&audio_blk_ctrl>;
> +      resets = <&audio_blk_ctrl IMX8MP_AUDIOMIX_DSP>;
>      };
> --
> 2.25.1
>