linux-kernel - Re: [PATCH 2/3] dt-bindings: arm: OP-TEE as transport channel for SCMI messages

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Date:   Wed, 19 May 2021 20:55:19 +0200
From:   Etienne Carriere <etienne.carriere@...aro.org>
To:     linux-kernel@...r.kernel.org
Cc:     "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        Sudeep Holla <sudeep.holla@....com>,
        Cristian Marussi <cristian.marussi@....com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Rob Herring <robh@...nel.org>, devicetree@...r.kernel.org
Subject: Re: [PATCH 2/3] dt-bindings: arm: OP-TEE as transport channel for
 SCMI messages

On Wed, 19 May 2021 at 19:02, Etienne Carriere
<etienne.carriere@...aro.org> 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>
> ---
>  Documentation/devicetree/bindings/arm/arm,scmi.txt | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/arm/arm,scmi.txt b/Documentation/devicetree/bindings/arm/arm,scmi.txt
> index 667d58e0a659..7658f16b3f35 100644
> --- a/Documentation/devicetree/bindings/arm/arm,scmi.txt
> +++ b/Documentation/devicetree/bindings/arm/arm,scmi.txt
> @@ -14,10 +14,11 @@ 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
> -- mboxes: List of phandle and mailbox channel specifiers. It should contain
> -         exactly one or two mailboxes, one for transmitting messages("tx")
> -         and another optional for receiving the notifications("rx") if
> +- compatible : shall be "arm,scmi" or "arm,scmi-smc" for smc/hvc transports,
> +         or "linaro,scmi-optee" for OP-TEE transport.
> +- mboxes: List of phandle and mailbox channel specifiers. When used, it should
> +         contain exactly one or two mailboxes, one for transmitting messages
> +         ("tx") and another optional for receiving the notifications("rx") if

Sorry, i missed that. This change should not modify mboxes property description.
I'll send a v2. My apologies.

etienne

>           supported.
>  - shmem : List of phandle pointing to the shared memory(SHM) area as per
>           generic mailbox client binding.
> --
> 2.17.1
>