| Message ID | 20230418185659.29745-2-quic_nkela@quicinc.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Allow parameter in smc/hvc calls | expand |
On Tue, 18 Apr 2023 11:56:58 -0700, Nikunj Kela wrote: > 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(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> > --- > Documentation/devicetree/bindings/firmware/arm,scmi.yaml | 8 +++++++- > 1 file changed, 7 insertions(+), 1 deletion(-) > Reviewed-by: Rob Herring <robh@kernel.org>
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
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(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> --- Documentation/devicetree/bindings/firmware/arm,scmi.yaml | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)