diff --git a/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts b/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts
index 1ae0708bb49503af10b605440c9290d1a4df2d5d..96cda59c2698db3b4348a8a78968f0c4dae748cd 100644
--- a/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts
+++ b/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts
@@ -37,10 +37,18 @@
 };
 
 &pfc {
+	pinctrl-0 = <&scif_clk_pins>;
+	pinctrl-names = "default";
+
 	scif2_pins: scif2 {
 		groups = "scif2_data_a";
 		function = "scif2";
 	};
+
+	scif_clk_pins: scif_clk {
+		groups = "scif_clk_a";
+		function = "scif_clk";
+	};
 };
 
 &scif2 {
@@ -49,3 +57,8 @@
 
 	status = "okay";
 };
+
+&scif_clk {
+	clock-frequency = <14745600>;
+	status = "okay";
+};