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dt-bindings: arm: Add smc/hvc transport for SCMI

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SCMI could use SMC/HVC as tranports. Since there is no standardized
SMC/HVC function identifier for the same, we need to use vendor
specific id. Add the same into the devicetree binding document.

Also add arm,scmi-smc compatible string for smc/hvc transport

Link: https://lore.kernel.org/r/1583673879-20714-2-git-send-email-peng.fan@nxp.com
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
[sudeep.holla: reworded commit log and subject]
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Peng Fan 2020-03-08 21:24:38 +08:00 committed by Sudeep Holla
parent 8f3d9f3542
commit b953dceadd
1 changed files with 2 additions and 1 deletions
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Documentation/devicetree/bindings/arm/arm,scmi.txt
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@ -14,7 +14,7 @@ Required properties:
The scmi node with the following properties shall be under the /firmware/ node. 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" for smc/hvc transports
- mboxes: List of phandle and mailbox channel specifiers. It should contain - mboxes: List of phandle and mailbox channel specifiers. It should contain
exactly one or two mailboxes, one for transmitting messages("tx") exactly one or two mailboxes, one for transmitting messages("tx")
and another optional for receiving the notifications("rx") if and another optional for receiving the notifications("rx") if
@ -25,6 +25,7 @@ The scmi node with the following properties shall be under the /firmware/ node.
protocol identifier for a given sub-node. protocol identifier for a given sub-node.
- #size-cells : should be '0' as 'reg' property doesn't have any size - #size-cells : should be '0' as 'reg' property doesn't have any size
associated with it. associated with it.
- arm,smc-id : SMC id required when using smc or hvc transports
Optional properties: Optional properties: