Introduces optee prefix and adds bindings for ARM TrustZone based OP-TEE implementation.
Signed-off-by: Jens Wiklander jens.wiklander@linaro.org --- .../bindings/arm/firmware/optee,optee-tz.txt | 29 ++++++++++++++++++++++ .../devicetree/bindings/vendor-prefixes.txt | 1 + 2 files changed, 30 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/firmware/optee,optee-tz.txt
diff --git a/Documentation/devicetree/bindings/arm/firmware/optee,optee-tz.txt b/Documentation/devicetree/bindings/arm/firmware/optee,optee-tz.txt new file mode 100644 index 0000000..0a8ed0d --- /dev/null +++ b/Documentation/devicetree/bindings/arm/firmware/optee,optee-tz.txt @@ -0,0 +1,29 @@ +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. As there's no single OP-TEE +vendor we're using "optee" as the first part of compatible property, +indicating the OP-TEE protocol is used when communicating with the secure +world. + +* OP-TEE based on ARM TrustZone required properties: + +- compatible : should contain "optee,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: + optee { + compatible = "optee,optee-tz"; + method = "smc"; + }; diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt index 82d2ac9..38e632f 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -159,6 +159,7 @@ nxp NXP Semiconductors okaya Okaya Electric America, Inc. onnn ON Semiconductor Corp. opencores OpenCores.org +optee OP-TEE, Open Portable Trusted Execution Environment option Option NV ortustech Ortus Technology Co., Ltd. ovti OmniVision Technologies