On Mon, Feb 10, 2020 at 12:59:43AM +0000, Peng Fan wrote:

quoted

Subject: [PATCH 1/2] dt-bindings: arm: arm,scmi: add smc/hvc transports

From: Peng Fan <peng.fan@nxp.com>

SCMI could use SMC/HVC as tranports, so add into devicetree binding doc.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 Documentation/devicetree/bindings/arm/arm,scmi.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/arm/arm,scmi.txt

b/Documentation/devicetree/bindings/arm/arm,scmi.txt
index f493d69e6194..03cff8b55a93 100644

--- a/Documentation/devicetree/bindings/arm/arm,scmi.txt
+++ b/Documentation/devicetree/bindings/arm/arm,scmi.txt

@@ -14,7 +14,7 @@ Required properties:

 The scmi node with the following properties shall be under the /firmware/

node.

-- compatible : shall be "arm,scmi"
+- compatible : shall be "arm,scmi" or "arm,scmi-smc"

One question here, are you fine with compatible "arm,scmi-smc" or
add a new property 'transport' such as:

Not required.

transport = "mailbox"; for mailbox
transport = "smc"; for smc and hvc.

Each transport will have it's own specific property like mailboxes for
mailbox, smc/hvc function IDs for SMC/HVC. That should be sufficient.

--
Regards,
Sudeep

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