From: Nikunj Kela Date: Sat, 6 May 2023 18:24:27 +0000 (-0700) Subject: dt-bindings: firmware: arm,scmi: support for parameter in smc/hvc call X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=8f9d530cffc1c035974a320c51c67abfdddf01ac;p=linux.git dt-bindings: firmware: arm,scmi: support for parameter in smc/hvc call Currently, smc/hvc calls are made with smc-id only. The parameters are all set to zeros. This change defines a new compatible string that can be used to pass shmem address(4KB-page, offset) as two parameters in SMC/HVC doorbell. This is useful when multiple scmi instances are used with common smc-id. Signed-off-by: Nikunj Kela Reviewed-by: Rob Herring Reviewed-by: Florian Fainelli Link: https://lore.kernel.org/r/20230506182428.25343-2-quic_nkela@quicinc.com Signed-off-by: Sudeep Holla --- diff --git a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml index 5824c43e98931..ad776911f9902 100644 --- a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml +++ b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml @@ -34,6 +34,10 @@ properties: - description: SCMI compliant firmware with ARM SMC/HVC transport items: - const: arm,scmi-smc + - description: SCMI compliant firmware with ARM SMC/HVC transport + with shmem address(4KB-page, offset) as parameters + items: + - const: arm,scmi-smc-param - description: SCMI compliant firmware with SCMI Virtio transport. The virtio transport only supports a single device. items: @@ -299,7 +303,9 @@ else: properties: compatible: contains: - const: arm,scmi-smc + enum: + - arm,scmi-smc + - arm,scmi-smc-param then: required: - arm,smc-id