linux-kernel - Re: [PATCH v4 1/2] dt-bindings: firmware: arm,scmi: support for parameter in smc/hvc call

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Date:   Tue, 25 Apr 2023 11:50:52 -0500
From:   Rob Herring <robh@...nel.org>
To:     Nikunj Kela <quic_nkela@...cinc.com>
Cc:     linux-kernel@...r.kernel.org, krzysztof.kozlowski+dt@...aro.org,
        cristian.marussi@....com, sudeep.holla@....com,
        devicetree@...r.kernel.org, robh+dt@...nel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v4 1/2] dt-bindings: firmware: arm,scmi: support for
 parameter in smc/hvc call


On Tue, 18 Apr 2023 11:56:58 -0700, Nikunj Kela wrote:
> Currently, smc/hvc calls are made with smc-id only. The parameters are
> all set to zeros. This patch defines a new compatible string that can
> be used to pass shmem address(4KB-page, offset) as two parameters in
> SMC/HVC doorbell.
> 
> This is useful when multiple scmi instances are used with common smc-id.
> 
> Signed-off-by: Nikunj Kela <quic_nkela@...cinc.com>
> ---
>  Documentation/devicetree/bindings/firmware/arm,scmi.yaml | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
> 

Reviewed-by: Rob Herring <robh@...nel.org>