diff --git a/arch/arm/dts/uniphier-ph1-sld3.dtsi b/arch/arm/dts/uniphier-ph1-sld3.dtsi
index 85dde66..e01bd30 100644
--- a/arch/arm/dts/uniphier-ph1-sld3.dtsi
+++ b/arch/arm/dts/uniphier-ph1-sld3.dtsi
@@ -62,12 +62,6 @@
 		ranges;
 		interrupt-parent = <&intc>;
 
-		extbus: extbus {
-			compatible = "simple-bus";
-			#address-cells = <2>;
-			#size-cells = <1>;
-		};
-
 		timer@20000200 {
 			compatible = "arm,cortex-a9-global-timer";
 			reg = <0x20000200 0x20>;
@@ -172,10 +166,16 @@
 			clock-frequency = <400000>;
 		};
 
-		system-bus-controller-misc@59800000 {
-			compatible = "socionext,uniphier-system-bus-controller-misc",
-				     "syscon";
-			reg = <0x59800000 0x2000>;
+		system_bus: system-bus@58c00000 {
+			compatible = "socionext,uniphier-system-bus";
+			reg = <0x58c00000 0x400>;
+			#address-cells = <2>;
+			#size-cells = <1>;
+		};
+
+		smpctrl@59800000 {
+			compatible = "socionext,uniphier-smpctrl";
+			reg = <0x59801000 0x400>;
 		};
 
 		mio: mioctrl@59810000 {