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Diffstat (limited to 'dts/Bindings/arm/firmware/linaro,optee-tz.txt')
| -rw-r--r-- | dts/Bindings/arm/firmware/linaro,optee-tz.txt | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/dts/Bindings/arm/firmware/linaro,optee-tz.txt b/dts/Bindings/arm/firmware/linaro,optee-tz.txt new file mode 100644 index 0000000000..d38834c67d --- /dev/null +++ b/dts/Bindings/arm/firmware/linaro,optee-tz.txt @@ -0,0 +1,31 @@ +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"; + }; + }; |