[RFC PATCH 2/6] dt-bindings: net: wireless: ath12k: describe WSI property for QCN9274

[Raj Kumar Bhagat]

QCN9274 device has WSI support. WSI stands for WLAN Serial Interface.
It is used for the exchange of specific control information across
radios based on the doorbell mechanism. This WSI connection is
essential to exchange control information among these devices

Hence, describe WSI interface supported in QCN9274 with the following
properties:

 - qcom,wsi-group-id: It represents the identifier assigned to the WSI
   connection. All the ath12k devices connected to same WSI connection
   have the same wsi-group-id.

 - qcom,wsi-index: It represents the identifier assigned to ath12k
   device in the order of the WSI connection.

 - qcom,wsi-num-devices: Number of devices connected through WSI in
   the same group ID.

Signed-off-by: Raj Kumar Bhagat <quic_rajkbhag@xxxxxxxxxxx>
---
 .../bindings/net/wireless/qcom,ath12k.yaml    | 61 +++++++++++++++++++
 1 file changed, 61 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/wireless/qcom,ath12k.yaml b/Documentation/devicetree/bindings/net/wireless/qcom,ath12k.yaml
index ecf38af747f7..6c8f97865075 100644
--- a/Documentation/devicetree/bindings/net/wireless/qcom,ath12k.yaml
+++ b/Documentation/devicetree/bindings/net/wireless/qcom,ath12k.yaml
@@ -19,6 +19,7 @@ properties:
   compatible:
     enum:
       - pci17cb,1107  # WCN7850
+      - pci17cb,1109  # QCN9274
 
   reg:
     maxItems: 1
@@ -50,6 +51,41 @@ properties:
   vddpcie1p8-supply:
     description: VDD_PCIE_1P8 supply regulator handle
 
+  wsi:
+    type: object
+    description:
+      The ath12k devices (QCN9274) feature WSI support. WSI stands for
+      WLAN Serial Interface. It is used for the exchange of specific
+      control information across radios based on the doorbell mechanism.
+      This WSI connection is essential to exchange control information
+      among these devices.
+
+    properties:
+      qcom,wsi-group-id:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description:
+          It represents the identifier assigned to the WSI connection. All
+          the ath12k devices connected to same WSI connection have the
+          same wsi-group-id.
+
+      qcom,wsi-index:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description:
+          It represents the identifier assigned to ath12k device in the
+          order of the WSI connection.
+
+      qcom,wsi-num-devices:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description:
+          Number of devices connected through WSI in the same group ID.
+
+    required:
+      - qcom,wsi-group-id
+      - qcom,wsi-index
+      - qcom,wsi-num-devices
+
+    additionalProperties: false
+
 required:
   - compatible
   - reg
@@ -108,3 +144,28 @@ examples:
             };
         };
     };
+
+  - |
+    pcie {
+        #address-cells = <3>;
+        #size-cells = <2>;
+
+        pcie@0 {
+            device_type = "pci";
+            reg = <0x0 0x0 0x0 0x0 0x0>;
+            #address-cells = <3>;
+            #size-cells = <2>;
+            ranges;
+
+            wifi@0 {
+                compatible = "pci17cb,1109";
+                reg = <0x0 0x0 0x0 0x0 0x0>;
+
+                wsi {
+                    qcom,wsi-group-id = <0>;
+                    qcom,wsi-index = <0>;
+                    qcom,wsi-num-devices = <3>;
+                };
+            };
+        };
+    };
-- 
2.34.1