diff --git a/arch/arm/dts/uniphier-ph1-ld4-ref.dts b/arch/arm/dts/uniphier-ph1-ld4-ref.dts
index 9d697c1..469bd05 100644
--- a/arch/arm/dts/uniphier-ph1-ld4-ref.dts
+++ b/arch/arm/dts/uniphier-ph1-ld4-ref.dts
@@ -20,8 +20,7 @@
 	};
 
 	chosen {
-		bootargs = "console=ttyS0,115200";
-		stdout-path = &serial0;
+		stdout-path = "serial0:115200n8";
 	};
 
 	aliases {
diff --git a/arch/arm/dts/uniphier-ph1-ld6b-ref.dts b/arch/arm/dts/uniphier-ph1-ld6b-ref.dts
index ccadd81..e0a972f 100644
--- a/arch/arm/dts/uniphier-ph1-ld6b-ref.dts
+++ b/arch/arm/dts/uniphier-ph1-ld6b-ref.dts
@@ -20,8 +20,7 @@
 	};
 
 	chosen {
-		bootargs = "console=ttyS0,115200";
-		stdout-path = &serial0;
+		stdout-path = "serial0:115200n8";
 	};
 
 	aliases {
diff --git a/arch/arm/dts/uniphier-ph1-pro4-ref.dts b/arch/arm/dts/uniphier-ph1-pro4-ref.dts
index a825069..02e74a7 100644
--- a/arch/arm/dts/uniphier-ph1-pro4-ref.dts
+++ b/arch/arm/dts/uniphier-ph1-pro4-ref.dts
@@ -20,8 +20,7 @@
 	};
 
 	chosen {
-		bootargs = "console=ttyS0,115200";
-		stdout-path = &serial0;
+		stdout-path = "serial0:115200n8";
 	};
 
 	aliases {
diff --git a/arch/arm/dts/uniphier-ph1-pro5-4kbox.dts b/arch/arm/dts/uniphier-ph1-pro5-4kbox.dts
index 52dd1f9..d46e827 100644
--- a/arch/arm/dts/uniphier-ph1-pro5-4kbox.dts
+++ b/arch/arm/dts/uniphier-ph1-pro5-4kbox.dts
@@ -19,8 +19,7 @@
 	};
 
 	chosen {
-		bootargs = "console=ttyS1,115200";
-		stdout-path = &serial1;
+		stdout-path = "serial1:115200n8";
 	};
 
 	aliases {
diff --git a/arch/arm/dts/uniphier-ph1-sld3-ref.dts b/arch/arm/dts/uniphier-ph1-sld3-ref.dts
index c760b6d..1f3aee9 100644
--- a/arch/arm/dts/uniphier-ph1-sld3-ref.dts
+++ b/arch/arm/dts/uniphier-ph1-sld3-ref.dts
@@ -21,8 +21,7 @@
 	};
 
 	chosen {
-		bootargs = "console=ttyS0,115200";
-		stdout-path = &serial0;
+		stdout-path = "serial0:115200n8";
 	};
 
 	aliases {
diff --git a/arch/arm/dts/uniphier-ph1-sld8-ref.dts b/arch/arm/dts/uniphier-ph1-sld8-ref.dts
index 2cfcaff..b58bf07 100644
--- a/arch/arm/dts/uniphier-ph1-sld8-ref.dts
+++ b/arch/arm/dts/uniphier-ph1-sld8-ref.dts
@@ -20,8 +20,7 @@
 	};
 
 	chosen {
-		bootargs = "console=ttyS0,115200";
-		stdout-path = &serial0;
+		stdout-path = "serial0:115200n8";
 	};
 
 	aliases {
diff --git a/arch/arm/dts/uniphier-proxstream2-gentil.dts b/arch/arm/dts/uniphier-proxstream2-gentil.dts
index d0af8ac..a49215e 100644
--- a/arch/arm/dts/uniphier-proxstream2-gentil.dts
+++ b/arch/arm/dts/uniphier-proxstream2-gentil.dts
@@ -19,8 +19,7 @@
 	};
 
 	chosen {
-		bootargs = "console=ttyS2,115200";
-		stdout-path = &serial2;
+		stdout-path = "serial2:115200n8";
 	};
 
 	aliases {
diff --git a/arch/arm/dts/uniphier-proxstream2-vodka.dts b/arch/arm/dts/uniphier-proxstream2-vodka.dts
index 92d7404..63bd363 100644
--- a/arch/arm/dts/uniphier-proxstream2-vodka.dts
+++ b/arch/arm/dts/uniphier-proxstream2-vodka.dts
@@ -19,8 +19,7 @@
 	};
 
 	chosen {
-		bootargs = "console=ttyS2,115200";
-		stdout-path = &serial2;
+		stdout-path = "serial2:115200n8";
 	};
 
 	aliases {