diff --git a/arch/arm/boot/dts/r8a7791-koelsch-reference.dts b/arch/arm/boot/dts/r8a7791-koelsch-reference.dts
index 1a0f082b21df849ae824f5d7e3ee922aa98d1ddb..8e7e917d66b6da2c409ec1bb70d37ccb1666fde1 100644
--- a/arch/arm/boot/dts/r8a7791-koelsch-reference.dts
+++ b/arch/arm/boot/dts/r8a7791-koelsch-reference.dts
@@ -30,3 +30,18 @@ lbsc {
 		#size-cells = <1>;
 	};
 };
+
+&pfc {
+	pinctrl-0 = <&scif0_pins &scif1_pins>;
+	pinctrl-names = "default";
+
+	scif0_pins: serial0 {
+		renesas,groups = "scif0_data_d";
+		renesas,function = "scif0";
+	};
+
+	scif1_pins: serial1 {
+		renesas,groups = "scif1_data_d";
+		renesas,function = "scif1";
+	};
+};