diff mbox series

[v3,1/2] dt-bindings: firmware: arm,scmi: support for parameter in smc/hvc call

Message ID 20230417174401.19563-2-quic_nkela@quicinc.com (mailing list archive)
State New, archived
Headers show
Series Allow parameter in smc/hvc calls | expand

Commit Message

Nikunj Kela April 17, 2023, 5:44 p.m. UTC 
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 mbox series

Patch

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