diff --git a/Documentation/devicetree/bindings/interrupt-controller/hisilicon,mbigen-v2.txt b/Documentation/devicetree/bindings/interrupt-controller/hisilicon,mbigen-v2.txt
index 720f7c92e9a1..3b2f4c43ad8d 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/hisilicon,mbigen-v2.txt
+++ b/Documentation/devicetree/bindings/interrupt-controller/hisilicon,mbigen-v2.txt
@@ -21,6 +21,8 @@ Mbigen main node required properties:
 - reg: Specifies the base physical address and size of the Mbigen
   registers.
 
+Mbigen sub node required properties:
+------------------------------------------
 - interrupt controller: Identifies the node as an interrupt controller
 
 - msi-parent: Specifies the MSI controller this mbigen use.
@@ -45,13 +47,23 @@ Mbigen main node required properties:
 
 Examples:
 
-	mbigen_device_gmac:intc {
+	mbigen_chip_dsa {
 			compatible = "hisilicon,mbigen-v2";
 			reg = <0x0 0xc0080000 0x0 0x10000>;
-			interrupt-controller;
-			msi-parent = <&its_dsa 0x40b1c>;
-			num-pins = <9>;
-			#interrupt-cells = <2>;
+
+			mbigen_gmac:intc_gmac {
+				interrupt-controller;
+				msi-parent = <&its_dsa 0x40b1c>;
+				num-pins = <9>;
+				#interrupt-cells = <2>;
+			};
+
+			mbigen_i2c:intc_i2c {
+				interrupt-controller;
+				msi-parent = <&its_dsa 0x40b0e>;
+				num-pins = <2>;
+				#interrupt-cells = <2>;
+			};
 	};
 
 Devices connect to mbigen required properties: