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| author | Nikunj Kela <quic_nkela@quicinc.com> | 2023-05-06 11:24:27 -0700 |
|---|---|---|
| committer | Sudeep Holla <sudeep.holla@arm.com> | 2023-05-09 17:01:40 +0100 |
| commit | 8f9d530cffc1c035974a320c51c67abfdddf01ac (patch) | |
| tree | 90716d8361575b2b1ae49f204c2dded03ff75b11 /Documentation/devicetree | |
| parent | ac9a78681b921877518763ba0e89202254349d1b (diff) | |
| download | linux-stable-8f9d530cffc1c035974a320c51c67abfdddf01ac.tar.gz linux-stable-8f9d530cffc1c035974a320c51c67abfdddf01ac.tar.bz2 linux-stable-8f9d530cffc1c035974a320c51c67abfdddf01ac.zip | |
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 <quic_nkela@quicinc.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20230506182428.25343-2-quic_nkela@quicinc.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/firmware/arm,scmi.yaml | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml index 5824c43e9893..ad776911f990 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 |