tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
dt/bindings: add bindings for optee
Introduces linaro prefix and adds bindings for ARM TrustZone based OP-TEE
implementation.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
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+31
Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.txt
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Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.txt
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OP-TEE Device Tree Bindings
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OP-TEE is a piece of software using hardware features to provide a Trusted
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Execution Environment. The security can be provided with ARM TrustZone, but
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also by virtualization or a separate chip.
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We're using "linaro" as the first part of the compatible property for
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the reference implementation maintained by Linaro.
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* OP-TEE based on ARM TrustZone required properties:
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- compatible : should contain "linaro,optee-tz"
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- method : The method of calling the OP-TEE Trusted OS. Permitted
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values are:
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"smc" : SMC #0, with the register assignments specified
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in drivers/tee/optee/optee_smc.h
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"hvc" : HVC #0, with the register assignments specified
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in drivers/tee/optee/optee_smc.h
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Example:
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firmware {
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optee {
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compatible = "linaro,optee-tz";
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method = "smc";
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};
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};