diff --git a/arch/mips/boot/dts/loongson/rs780e-pch.dtsi b/arch/mips/boot/dts/loongson/rs780e-pch.dtsi
index d0d5d60a8697f426fd466e4c00355f3f5f8b076e..d4c803d74036482ca0985c358eac2ac27d8765d4 100644
--- a/arch/mips/boot/dts/loongson/rs780e-pch.dtsi
+++ b/arch/mips/boot/dts/loongson/rs780e-pch.dtsi
@@ -17,7 +17,7 @@
 
 			reg = <0 0x1a000000 0 0x02000000>;
 
-			ranges = <0x01000000 0 0x00004000 0 0x18004000 0 0x00004000>,
+			ranges = <0x01000000 0 0x00004000 0 0x18004000 0 0x00008000>,
 				 <0x02000000 0 0x40000000 0 0x40000000 0 0x40000000>;
 		};
 
@@ -25,7 +25,7 @@
 			compatible = "isa";
 			#address-cells = <2>;
 			#size-cells = <1>;
-			ranges = <1 0 0 0 0x1000>;
+			ranges = <1 0 0 0 0x4000>;
 
 			rtc0: rtc@70 {
 				compatible = "motorola,mc146818";