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@foss.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.

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.../bindings/remoteproc/st,stm32-rproc.yaml | 51 ++++++++++++++++--- 1 file changed, 43 insertions(+), 8 deletions(-)

Reviewed-by: Rob Herring robh@kernel.org