Kernel-4.18.0-80.el8_linaro,optee-tz

OP-TEE Device Tree Bindings

OP-TEE is a piece of software using hardware features to provide a Trusted
Execution Environment. The security can be provided with ARM TrustZone, but
also by virtualization or a separate chip.

We’re using “linaro” as the first part of the compatible property for
the reference implementation maintained by Linaro.

• OP-TEE based on ARM TrustZone required properties:

• compatible : should contain “linaro,optee-tz”

• method : The method of calling the OP-TEE Trusted OS. Permitted

               values are:
  
               "smc" : SMC #0, with the register assignments specified
               in drivers/tee/optee/optee_smc.h
  
               "hvc" : HVC #0, with the register assignments specified
               in drivers/tee/optee/optee_smc.h
  

Example:
firmware {
optee {
compatible = “linaro,optee-tz”;
method = “smc”;
};
};