diff --git a/arch/arm/dts/r8a779g3-sparrow-hawk-u-boot.dtsi b/arch/arm/dts/r8a779g3-sparrow-hawk-u-boot.dtsi
index dff0355150d..968cf6684c5 100644
--- a/arch/arm/dts/r8a779g3-sparrow-hawk-u-boot.dtsi
+++ b/arch/arm/dts/r8a779g3-sparrow-hawk-u-boot.dtsi
@@ -49,6 +49,24 @@
 	status = "okay";
 };
 
+&pcie0_clkref {
+	clock-frequency = <100000000>;
+	status = "okay";
+};
+
+&pciec0 {
+	clocks = <&cpg CPG_MOD 624>, <&pcie0_clkref>;
+};
+
+&pcie1_clkref {
+	clock-frequency = <100000000>;
+	status = "okay";
+};
+
+&pciec1 {
+	clocks = <&cpg CPG_MOD 625>, <&pcie1_clkref>;
+};
+
 &rpc {
 	flash@0 {
 		/*