1 OP-TEE Device Tree Bindings
2
3 OP-TEE is a piece of software using hardware features to provide a Trusted
4 Execution Environment. The security can be provided with ARM TrustZone, but
5 also by virtualization or a separate chip.
6
7 We're using "linaro" as the first part of the compatible property for
8 the reference implementation maintained by Linaro.
9
10 * OP-TEE based on ARM TrustZone required properties:
11
12 - compatible : should contain "linaro,optee-tz"
13
14 - method : The method of calling the OP-TEE Trusted OS. Permitted
15 values are:
16
17 "smc" : SMC #0, with the register assignments specified
18 in drivers/tee/optee/optee_smc.h
19
20 "hvc" : HVC #0, with the register assignments specified
21 in drivers/tee/optee/optee_smc.h
22
23
24
25 Example:
26 firmware {
27 optee {
28 compatible = "linaro,optee-tz";
29 method = "smc";
30 };
31 };
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