On Tue, Sep 15, 2015 at 05:37:07PM -0500, Rob Herring wrote:

On 08/19/2015 03:40 AM, Jens Wiklander wrote:

quoted

Introduces optee prefix and adds bindings for ARM TrustZone based OP-TEE
implementation.

Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
---
 Documentation/devicetree/bindings/optee/optee.txt     | 17 +++++++++++++++++

How about bindings/arm/firmware/... where the *other* TZ binding is located.

OK, I'll move it.

quoted

 Documentation/devicetree/bindings/vendor-prefixes.txt |  1 +
 2 files changed, 18 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/optee/optee.txt

diff --git a/Documentation/devicetree/bindings/optee/optee.txt b/Documentation/devicetree/bindings/optee/optee.txt
new file mode 100644
index 0000000..4a6ff10
--- /dev/null
+++ b/Documentation/devicetree/bindings/optee/optee.txt

@@ -0,0 +1,17 @@
+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

I don't see how the Linux side would not need to know what the
communication channel is whether it is smc, hvc, or something else.

I assume you're missing something similar to the "method" property
defined for PSCI. I'll add that.

quoted

+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="optee,optee-tz"
+
+Example:
+	optee {
+		compatible="optee,optee-tz";
+	};

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 8033919..17c2a7e 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt

@@ -141,6 +141,7 @@ nvidia	NVIDIA
 nxp	NXP Semiconductors
 onnn	ON Semiconductor Corp.
 opencores	OpenCores.org
+optee	OP-TEE, Open Portable Trusted Execution Environment
 ortustech	Ortus Technology Co., Ltd.
 ovti	OmniVision Technologies
 panasonic	Panasonic Corporation

Thanks,
Jens