Messages in this thread Patch in this message | | | From | Nikunj Kela <> | Subject | [PATCH v3 1/2] dt-bindings: firmware: arm,scmi: support for parameter in smc/hvc call | Date | Mon, 17 Apr 2023 10:44:00 -0700 |
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Currently, smc/hvc calls are made with smc-id only. The parameters are all set to zeros. This patch defines a new compatible string that can be used to pass shmem address as one parameter in SMC/HVC doorbell.
This is useful when multiple scmi instances are used with common smc-id.
Signed-off-by: Nikunj Kela <quic_nkela@quicinc.com> --- Documentation/devicetree/bindings/firmware/arm,scmi.yaml | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml index 5824c43e9893..e1f39a10d405 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 as parameter + 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 -- 2.17.1
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