diff --git a/arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi b/arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi
index 17bc4b359912..73e0acfd4f98 100644
--- a/arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi
+++ b/arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi
@@ -323,7 +323,7 @@
 		sysctrl@61840000 {
 			compatible = "socionext,uniphier-ld11-sysctrl",
 				     "simple-mfd", "syscon";
-			reg = <0x61840000 0x4000>;
+			reg = <0x61840000 0x10000>;
 
 			sys_clk: clock {
 				compatible = "socionext,uniphier-ld11-clock";
diff --git a/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi b/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
index c8ebe7e52809..eaf260823084 100644
--- a/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
+++ b/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
@@ -312,7 +312,7 @@
 		sysctrl@61840000 {
 			compatible = "socionext,uniphier-sysctrl",
 				     "simple-mfd", "syscon";
-			reg = <0x61840000 0x4000>;
+			reg = <0x61840000 0x10000>;
 
 			sys_clk: clock {
 				compatible = "socionext,uniphier-ld20-clock";