Commit c8bfafb1 authored by Jens Wiklander's avatar Jens Wiklander
Browse files

dt/bindings: add bindings for optee 



Introduces linaro prefix and adds bindings for ARM TrustZone based OP-TEE
implementation.

Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarJens Wiklander <jens.wiklander@linaro.org>
parent c1ae3cfa

Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.txt

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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";

		};

	};

Documentation/devicetree/bindings/vendor-prefixes.txt

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@@ -168,6 +168,7 @@ lego LEGO Systems A/S 
lenovo	Lenovo Group Ltd.

lg	LG Corporation

licheepi	Lichee Pi

linaro	Linaro Limited

linux	Linux-specific binding

lltc	Linear Technology Corporation

lsi	LSI Corp. (LSI Logic)