On Thu, Oct 29, 2015 at 09:21:25AM +0100, Jens Wiklander wrote: > Introduces optee prefix and adds bindings for ARM TrustZone based OP-TEE > implementation. > > Signed-off-by: Jens Wiklander <jens.wiklander@xxxxxxxxxx> > --- > .../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" I would leave off optee as a vendor. Different implementations by vendors should then add their vendor prefix as they all have the chance to screw-up something. I suppose we could do "linaro" as the reference implementation. > + > +- 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 The use here would be a guest VM calling thru to hypervisor and then hypervisor calling optee? > + > + > + > +Example: > + optee { This should go under a /firmware node similar to Documentation/devicetree/bindings/arm/firmware/tlm,trusted-foundations.txt. Rob -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html