linux-kernel - Re: [RESEND PATCH v1 1/2] dt-bindings: misc: fastrpc: add fastrpc group IDs property

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Date:   Wed, 7 Jun 2023 20:44:01 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Ekansh Gupta <quic_ekangupt@...cinc.com>,
        srinivas.kandagatla@...aro.org, linux-arm-msm@...r.kernel.org
Cc:     ekangupt@....qualcomm.com, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org, fastrpc.upstream@....qualcomm.com,
        agross@...nel.org, andersson@...nel.org, konrad.dybcio@...aro.org,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, devicetree@...r.kernel.org
Subject: Re: [RESEND PATCH v1 1/2] dt-bindings: misc: fastrpc: add fastrpc
 group IDs property

On 07/06/2023 18:30, Ekansh Gupta wrote:
> Add "qcom,fastrpc-gids" property to the list of optional properties.
> This property contains the list of privileged group IDs which is
> used to offload process to remote subsystem with increased privileges.

Why or when anyone would use this property?

> 
> Signed-off-by: Ekansh Gupta <quic_ekangupt@...cinc.com>
> ---
>  Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml b/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml
> index 1ab9588..2a2124f 100644
> --- a/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml
> +++ b/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml
> @@ -57,6 +57,11 @@ properties:
>        Virtual machine IDs for remote processor.
>      $ref: "/schemas/types.yaml#/definitions/uint32-array"
>  
> +  qcom,fastrpc-gids:
> +    description:
> +      Group IDs for fastrpc.

You just pasted here property name. It does not help me to understand
what's this. Explain in description.

> +    $ref: "/schemas/types.yaml#/definitions/uint32-array"

Drop quotes.

missing min/maxItems.

> +
>    "#address-cells":
>      const: 1
>  
> @@ -120,6 +125,7 @@ examples:
>              qcom,glink-channels = "fastrpcglink-apps-dsp";
>              label = "sdsp";
>              qcom,non-secure-domain;
> +            qcom,fastrpc-gids = <2908>

Eh, what does 2908 stands for? Why not 3012 or 1842? How anyone can
figure this out?

Best regards,
Krzysztof