[PATCH v1 4/6] dt-bindings: firmware: arm,scmi: Introduce more transport properties

[Cristian Marussi]

Depending on hardware and firmware design choices different platforms can
end-up having different requirements around transport features.

Introduce max-msg-size and max-msg properties to describe platform specific
transport constraints.

Signed-off-by: Cristian Marussi <cristian.marussi at arm.com>
---
 .../devicetree/bindings/firmware/arm,scmi.yaml    | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
index 7c9fa07e2ff2..998fde321d82 100644
--- a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
+++ b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
@@ -128,6 +128,21 @@ properties:
       be a non-zero value if set.
     minimum: 1
 
+  max-msg-size:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      An optional value, expressed in bytes, representing the transport maximum
+      message size. The value should at least allow for the 4-bytes SCMI message
+      header to be transmitted if set.
+    minimum: 4
+
+  max-msg:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      An optional value representing the transport maximum number of concurrent
+      in-flight messages. The value should be a non-zero value if set.
+    minimum: 1
+
   arm,smc-id:
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
-- 
2.45.2