diff --git a/target/linux/ramips/dts/mt7621_netgear_sercomm_bzv.dtsi b/target/linux/ramips/dts/mt7621_netgear_sercomm_bzv.dtsi
index ab96b8fdd12..5c4512b508e 100644
--- a/target/linux/ramips/dts/mt7621_netgear_sercomm_bzv.dtsi
+++ b/target/linux/ramips/dts/mt7621_netgear_sercomm_bzv.dtsi
@@ -216,6 +216,7 @@
 		reg = <0x20>;
 
 		gpio-controller;
+		interrupt-controller;
 	};
 };
 
diff --git a/target/linux/ramips/dts/mt7621_sercomm_na502s.dts b/target/linux/ramips/dts/mt7621_sercomm_na502s.dts
index 50d4df81f60..d36440fd0ab 100644
--- a/target/linux/ramips/dts/mt7621_sercomm_na502s.dts
+++ b/target/linux/ramips/dts/mt7621_sercomm_na502s.dts
@@ -330,6 +330,7 @@
 		reg = <0x22>;
 
 		gpio-controller;
+		interrupt-controller;
 	};
 
 	gpio_expander0: gpio-expander0@20 {
@@ -339,6 +340,7 @@
 		reg = <0x20>;
 
 		gpio-controller;
+		interrupt-controller;
 	};
 
 	gpio_expander1: gpio-expander1@21 {
@@ -348,6 +350,7 @@
 		reg = <0x21>;
 
 		gpio-controller;
+		interrupt-controller;
 	};
 };