Re: [PATCH 1/2] dt-bindings: arm: Add qcom specific hvc transport for SCMI

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On Tue, Jul 18, 2023 at 09:08:32AM -0700, Nikunj Kela wrote:
> Introduce compatible "qcom,scmi-hvc-shmem" for SCMI
> transport channel for Qualcomm virtual platforms.
> The compatible mandates a shared memory channel.
> 
> Signed-off-by: Nikunj Kela <quic_nkela@xxxxxxxxxxx>
> ---
>  .../bindings/firmware/arm,scmi.yaml           | 69 +++++++++++++++++++
>  1 file changed, 69 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
> index b138f3d23df8..605b1e997a85 100644
> --- a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
> +++ b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
> @@ -45,6 +45,9 @@ properties:
>        - description: SCMI compliant firmware with OP-TEE transport
>          items:
>            - const: linaro,scmi-optee
> +      - description: SCMI compliant firmware with Qualcomm hvc/shmem transport
> +        items:
> +          - const: qcom,scmi-hvc-shmem
>  
>    interrupts:
>      description:
> @@ -321,6 +324,16 @@ else:
>        required:
>          - linaro,optee-channel-id
>  
> +    else:
> +      if:
> +        properties:
> +          compatible:
> +            contains:
> +              const: qcom,scmi-hvc-shmem
> +      then:
> +        required:
> +          - shmem
> +

Since this was done after we merged the support recently for extension of
SMC/HVC, I need the reason(s) why this can't be used and based on the response
this is new change so it can't be because there is a product already
supporting this. So for now, NACK until I get the response for these.

-- 
Regards,
Sudeep



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