diff --git a/arch/arm/boot/dts/uniphier-common32.dtsi b/arch/arm/boot/dts/uniphier-common32.dtsi
index 8c8a85176b64..d067f38fa21d 100644
--- a/arch/arm/boot/dts/uniphier-common32.dtsi
+++ b/arch/arm/boot/dts/uniphier-common32.dtsi
@@ -183,7 +183,7 @@ pinctrl: pinctrl {
 		sysctrl@61840000 {
 			compatible = "socionext,uniphier-sysctrl",
 				     "simple-mfd", "syscon";
-			reg = <0x61840000 0x4000>;
+			reg = <0x61840000 0x10000>;
 
 			sys_clk: clock {
 				#clock-cells = <1>;
diff --git a/arch/arm/boot/dts/uniphier-sld3.dtsi b/arch/arm/boot/dts/uniphier-sld3.dtsi
index 5fa96c939b5c..35c18197d94f 100644
--- a/arch/arm/boot/dts/uniphier-sld3.dtsi
+++ b/arch/arm/boot/dts/uniphier-sld3.dtsi
@@ -271,7 +271,7 @@ usb3: usb@5a830100 {
 		sysctrl@f1840000 {
 			compatible = "socionext,uniphier-sysctrl",
 				     "simple-mfd", "syscon";
-			reg = <0xf1840000 0x4000>;
+			reg = <0xf1840000 0x10000>;
 
 			sys_clk: clock {
 				compatible = "socionext,uniphier-sld3-clock";