diff --git a/airoha/dts/en7581-base.dtsi b/airoha/dts/en7581-base.dtsi
index 88ddc71d5375e7fadfcbad75e536e36e301ade09..fe3e153444ac681e9de5b9693e297a63fcfeb236 100644
--- a/airoha/dts/en7581-base.dtsi
+++ b/airoha/dts/en7581-base.dtsi
@@ -436,7 +436,7 @@
 		//   2) Please keep in sync iomem areas used by this driver with
 		//	is_pinctrl_reg() function from the "ecnt-scu" driver.
 		// --------------------------------------------------------------------
-		reg = <0x0 0x1fa20214 0x0 0x1C>, /* IOMUX Control Registers */
+		reg = <0x0 0x1fa20214 0x0 0x20>, /* IOMUX Control Registers */
 			<0x0 0x1fa2001C 0x0 0x18>, /* IO TX Driving Control Registers */
 			<0x0 0x1fa20044 0x0 0x18>, /* IO Pull up/down Control Registers */
 			<0x0 0x1fa2027C 0x0 0x8>;  /* LED Mapping Register */