diff --git a/arch/arm/dts/uniphier-ph1-ld4-ref.dts b/arch/arm/dts/uniphier-ph1-ld4-ref.dts
index bc8ead4..20b0583 100644
--- a/arch/arm/dts/uniphier-ph1-ld4-ref.dts
+++ b/arch/arm/dts/uniphier-ph1-ld4-ref.dts
@@ -21,5 +21,14 @@
 
 	chosen {
 		bootargs = "console=ttyPS0,115200 earlyprintk";
+		stdout-path = &uart0;
 	};
 };
+
+&uart0 {
+       status = "okay";
+};
+
+&uart1 {
+       status = "okay";
+};
diff --git a/arch/arm/dts/uniphier-ph1-ld4.dtsi b/arch/arm/dts/uniphier-ph1-ld4.dtsi
index ee53d9c..c1c2c62 100644
--- a/arch/arm/dts/uniphier-ph1-ld4.dtsi
+++ b/arch/arm/dts/uniphier-ph1-ld4.dtsi
@@ -28,5 +28,33 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 		ranges;
+
+		uart0: serial@54006800 {
+			compatible = "panasonic,uniphier-uart";
+			status = "disabled";
+			reg = <0x54006800 0x20>;
+			clock-frequency = <36864000>;
+		};
+
+		uart1: serial@54006900 {
+			compatible = "panasonic,uniphier-uart";
+			status = "disabled";
+			reg = <0x54006900 0x20>;
+			clock-frequency = <36864000>;
+		};
+
+		uart2: serial@54006a00 {
+			compatible = "panasonic,uniphier-uart";
+			status = "disabled";
+			reg = <0x54006a00 0x20>;
+			clock-frequency = <36864000>;
+		};
+
+		uart3: serial@54006b00 {
+			compatible = "panasonic,uniphier-uart";
+			status = "disabled";
+			reg = <0x54006b00 0x20>;
+			clock-frequency = <36864000>;
+		};
 	};
 };
diff --git a/arch/arm/dts/uniphier-ph1-pro4-ref.dts b/arch/arm/dts/uniphier-ph1-pro4-ref.dts
index 03091a8..b42c9c8 100644
--- a/arch/arm/dts/uniphier-ph1-pro4-ref.dts
+++ b/arch/arm/dts/uniphier-ph1-pro4-ref.dts
@@ -21,5 +21,14 @@
 
 	chosen {
 		bootargs = "console=ttyPS0,115200 earlyprintk";
+		stdout-path = &uart0;
 	};
 };
+
+&uart0 {
+       status = "okay";
+};
+
+&uart1 {
+       status = "okay";
+};
diff --git a/arch/arm/dts/uniphier-ph1-pro4.dtsi b/arch/arm/dts/uniphier-ph1-pro4.dtsi
index 7619c36..b53fbc5 100644
--- a/arch/arm/dts/uniphier-ph1-pro4.dtsi
+++ b/arch/arm/dts/uniphier-ph1-pro4.dtsi
@@ -34,5 +34,33 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 		ranges;
+
+		uart0: serial@54006800 {
+			compatible = "panasonic,uniphier-uart";
+			status = "disabled";
+			reg = <0x54006800 0x20>;
+			clock-frequency = <73728000>;
+		};
+
+		uart1: serial@54006900 {
+			compatible = "panasonic,uniphier-uart";
+			status = "disabled";
+			reg = <0x54006900 0x20>;
+			clock-frequency = <73728000>;
+		};
+
+		uart2: serial@54006a00 {
+			compatible = "panasonic,uniphier-uart";
+			status = "disabled";
+			reg = <0x54006a00 0x20>;
+			clock-frequency = <73728000>;
+		};
+
+		uart3: serial@54006b00 {
+			compatible = "panasonic,uniphier-uart";
+			status = "disabled";
+			reg = <0x54006b00 0x20>;
+			clock-frequency = <73728000>;
+		};
 	};
 };
diff --git a/arch/arm/dts/uniphier-ph1-sld8-ref.dts b/arch/arm/dts/uniphier-ph1-sld8-ref.dts
index e7969af..6f898a3 100644
--- a/arch/arm/dts/uniphier-ph1-sld8-ref.dts
+++ b/arch/arm/dts/uniphier-ph1-sld8-ref.dts
@@ -21,5 +21,14 @@
 
 	chosen {
 		bootargs = "console=ttyPS0,115200 earlyprintk";
+		stdout-path = &uart0;
 	};
 };
+
+&uart0 {
+       status = "okay";
+};
+
+&uart1 {
+       status = "okay";
+};
diff --git a/arch/arm/dts/uniphier-ph1-sld8.dtsi b/arch/arm/dts/uniphier-ph1-sld8.dtsi
index 2f895e9..9a8da5e 100644
--- a/arch/arm/dts/uniphier-ph1-sld8.dtsi
+++ b/arch/arm/dts/uniphier-ph1-sld8.dtsi
@@ -28,5 +28,33 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 		ranges;
+
+		uart0: serial@54006800 {
+			compatible = "panasonic,uniphier-uart";
+			status = "disabled";
+			reg = <0x54006800 0x20>;
+			clock-frequency = <80000000>;
+		};
+
+		uart1: serial@54006900 {
+			compatible = "panasonic,uniphier-uart";
+			status = "disabled";
+			reg = <0x54006900 0x20>;
+			clock-frequency = <80000000>;
+		};
+
+		uart2: serial@54006a00 {
+			compatible = "panasonic,uniphier-uart";
+			status = "disabled";
+			reg = <0x54006a00 0x20>;
+			clock-frequency = <80000000>;
+		};
+
+		uart3: serial@54006b00 {
+			compatible = "panasonic,uniphier-uart";
+			status = "disabled";
+			reg = <0x54006b00 0x20>;
+			clock-frequency = <80000000>;
+		};
 	};
 };