Add bindings for OP-TEE based optional hardware random number
generator identifier property. It could be used on ARM based devices
where entropy source is not accessible to normal world (linux in this
case).
Signed-off-by: Sumit Garg <sumit.garg@xxxxxxxxxx>
---
Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.txt | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.txt b/Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.txt
index d38834c..e3a4c35 100644
--- a/Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.txt
+++ b/Documentation/devicetree/bindings/arm/firmware/linaro,optee-tz.txt
@@ -20,6 +20,9 @@ the reference implementation maintained by Linaro.
"hvc" : HVC #0, with the register assignments specified
in drivers/tee/optee/optee_smc.h
+- rng-uuid : Optional OP-TEE based RNG service identifier in case
+ hardware entropy source is not accesible to normal world
+ (Linux).
Example:
@@ -27,5 +30,6 @@ Example:
optee {
compatible = "linaro,optee-tz";
method = "smc";
+ rng-uuid = "ab7a617c-b8e7-4d8f-8301-d09b61036b64";
};
};
--
2.7.4
