linux-kernel - Re: [PATCH v2 3/4] dt-bindings: arm: OP-TEE as transport channel for SCMI messages

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Message-ID: <20210602105310.frlfxmxhqik4cnvr@bogus>
Date:   Wed, 2 Jun 2021 11:53:10 +0100
From:   Sudeep Holla <sudeep.holla@....com>
To:     Etienne Carriere <etienne.carriere@...aro.org>
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Cristian Marussi <cristian.marussi@....com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Rob Herring <robh@...nel.org>, devicetree@...r.kernel.org
Subject: Re: [PATCH v2 3/4] dt-bindings: arm: OP-TEE as transport channel for
 SCMI messages

On Fri, May 21, 2021 at 03:40:53PM +0200, Etienne Carriere wrote:
> Introduce compatible "linaro,scmi-optee" for SCMI transport channel
> based on an OP-TEE service invocation.
> 
> Cc: Rob Herring <robh@...nel.org>
> Cc: devicetree@...r.kernel.org
> Signed-off-by: Etienne Carriere <etienne.carriere@...aro.org>
> ---
> Changes since v1:
>  - Removed modification regarding mboxes property description.
> ---
>  Documentation/devicetree/bindings/arm/arm,scmi.txt | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/arm/arm,scmi.txt b/Documentation/devicetree/bindings/arm/arm,scmi.txt
> index 856d041b397e..ccab2ef6f6ec 100644
> --- a/Documentation/devicetree/bindings/arm/arm,scmi.txt
> +++ b/Documentation/devicetree/bindings/arm/arm,scmi.txt
> @@ -14,7 +14,8 @@ Required properties:
>  
>  The scmi node with the following properties shall be under the /firmware/ node.
>  
> -- compatible : shall be "arm,scmi" or "arm,scmi-smc" for smc/hvc transports
> +- compatible : shall be "arm,scmi" or "arm,scmi-smc" for smc/hvc transports,
> +	  or "linaro,scmi-optee" for OP-TEE transport.

Please rebase this [1] when you post next version. It is not clear about
the mailbox or shmem properties here  for this new OP-TEE transport but
I assume it will be easier to understand with yaml schema.

-- 
Regards,
Sudeep

[1] https://lore.kernel.org/r/20210601224904.917990-9-sudeep.holla@arm.com/