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Message-ID: <170862626977.3652711.10744856298270939089.robh@kernel.org>
Date: Thu, 22 Feb 2024 12:24:30 -0600
From: Rob Herring <robh@...nel.org>
To: Arnaud Pouliquen <arnaud.pouliquen@...s.st.com>
Cc: op-tee@...ts.trustedfirmware.org,
	Mathieu Poirier <mathieu.poirier@...aro.org>,
	linux-stm32@...md-mailman.stormreply.com,
	Rob Herring <robh+dt@...nel.org>, linux-remoteproc@...r.kernel.org,
	devicetree@...r.kernel.org, Conor Dooley <conor+dt@...nel.org>,
	Bjorn Andersson <andersson@...nel.org>,
	Jens Wiklander <jens.wiklander@...aro.org>,
	linux-arm-kernel@...ts.infradead.org,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 5/7] dt-bindings: remoteproc: Add compatibility for
 TEE support


On Wed, 14 Feb 2024 18:21:25 +0100, Arnaud Pouliquen wrote:
> The "st,stm32mp1-m4-tee" compatible is utilized in a system configuration
> where the Cortex-M4 firmware is loaded by the Trusted execution Environment
> (TEE).
> For instance, this compatible is used in both the Linux and OP-TEE
> device-tree:
> - In OP-TEE, a node is defined in the device tree with the
>   st,stm32mp1-m4-tee to support signed remoteproc firmware.
>   Based on DT properties, OP-TEE authenticates, loads, starts, and stops
>   the firmware.
> - On Linux, when the compatibility is set, the Cortex-M resets should not
>   be declared in the device tree.
> 
> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@...s.st.com>
> ---
> V1 to V2 updates
> - update "st,stm32mp1-m4" compatible description to generalize
> - remove the 'reset-names' requirement in one conditional branch, as the
>   property is already part of the condition test.
> ---
>  .../bindings/remoteproc/st,stm32-rproc.yaml   | 51 ++++++++++++++++---
>  1 file changed, 43 insertions(+), 8 deletions(-)
> 

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


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