[PATCH v4 1/2] dt-bindings: microsoft: Add vmbus message-connection-id property

[Hardik Garg <hargar@linux.microsoft.com>]

Document the microsoft,message-connection-id property for VMBus DeviceTree
node. This property allows specifying the connection ID used for
communication between host and guest.

Signed-off-by: Hardik Garg <hargar@linux.microsoft.com>
---
v3: https://lore.kernel.org/all/6a92ca86-ad6b-4d49-af6e-1ed7651b8ab8@linux.microsoft.com
v2: https://lore.kernel.org/all/096edaf7-cc90-42b6-aff4-c5f088574e1e@linux.microsoft.com
v1: https://lore.kernel.org/all/6acee4bf-cb04-43b9-9476-e8d811d26dfd@linux.microsoft.com
---
 Documentation/devicetree/bindings/bus/microsoft,vmbus.yaml | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/bus/microsoft,vmbus.yaml b/Documentation/devicetree/bindings/bus/microsoft,vmbus.yaml
index 0bea4f5287ce..615b48bd6a8b 100644
--- a/Documentation/devicetree/bindings/bus/microsoft,vmbus.yaml
+++ b/Documentation/devicetree/bindings/bus/microsoft,vmbus.yaml
@@ -17,6 +17,14 @@ properties:
   compatible:
     const: microsoft,vmbus
 
+  microsoft,message-connection-id:
+    description: |
+      VMBus message connection ID to be used for communication between host and
+      guest. If not specified, defaults to VMBUS_MESSAGE_CONNECTION_ID_4 (4) for
+      protocol version VERSION_WIN10_V5 and above, or VMBUS_MESSAGE_CONNECTION_ID
+      (1) for older versions.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
   ranges: true
 
   '#address-cells':
@@ -55,6 +63,7 @@ examples:
 
             vmbus@ff0000000 {
                 compatible = "microsoft,vmbus";
+                microsoft,message-connection-id = <4>;
                 #address-cells = <2>;
                 #size-cells = <1>;
                 ranges = <0x0f 0xf0000000 0x0f 0xf0000000 0x10000000>;
-- 
2.40.4