linux-kernel - [PATCH 2/3] dt-bindings: arm: OP-TEE as transport channel for SCMI messages

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Message-Id: <20210519170158.27586-2-etienne.carriere@linaro.org>
Date:   Wed, 19 May 2021 19:01:57 +0200
From:   Etienne Carriere <etienne.carriere@...aro.org>
To:     linux-kernel@...r.kernel.org
Cc:     linux-arm-kernel@...ts.infradead.org,
        Sudeep Holla <sudeep.holla@....com>,
        Cristian Marussi <cristian.marussi@....com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Etienne Carriere <etienne.carriere@...aro.org>,
        Rob Herring <robh@...nel.org>, devicetree@...r.kernel.org
Subject: [PATCH 2/3] dt-bindings: arm: OP-TEE as transport channel for SCMI messages

Introduce compatible "linaro,scmi-optee" for SCMI transport channel
based on an OP-TEE service invocation.

Cc: Rob Herring <robh@...nel.org>
Cc: devicetree@...r.kernel.org
Signed-off-by: Etienne Carriere <etienne.carriere@...aro.org>
---
 Documentation/devicetree/bindings/arm/arm,scmi.txt | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/arm/arm,scmi.txt b/Documentation/devicetree/bindings/arm/arm,scmi.txt
index 667d58e0a659..7658f16b3f35 100644
--- a/Documentation/devicetree/bindings/arm/arm,scmi.txt
+++ b/Documentation/devicetree/bindings/arm/arm,scmi.txt
@@ -14,10 +14,11 @@ Required properties:
 
 The scmi node with the following properties shall be under the /firmware/ node.
 
-- compatible : shall be "arm,scmi" or "arm,scmi-smc" for smc/hvc transports
-- mboxes: List of phandle and mailbox channel specifiers. It should contain
-	  exactly one or two mailboxes, one for transmitting messages("tx")
-	  and another optional for receiving the notifications("rx") if
+- compatible : shall be "arm,scmi" or "arm,scmi-smc" for smc/hvc transports,
+	  or "linaro,scmi-optee" for OP-TEE transport.
+- mboxes: List of phandle and mailbox channel specifiers. When used, it should
+	  contain exactly one or two mailboxes, one for transmitting messages
+	  ("tx") and another optional for receiving the notifications("rx") if
 	  supported.
 - shmem : List of phandle pointing to the shared memory(SHM) area as per
 	  generic mailbox client binding.
-- 
2.17.1