diff --git a/drivers/staging/mt7621-dts/mt7621.dtsi b/drivers/staging/mt7621-dts/mt7621.dtsi
index 9ee11adefa79..840ba0c3ffed 100644
--- a/drivers/staging/mt7621-dts/mt7621.dtsi
+++ b/drivers/staging/mt7621-dts/mt7621.dtsi
@@ -548,12 +548,14 @@
 	pcie0_phy: pcie-phy@1e149000 {
 		compatible = "mediatek,mt7621-pci-phy";
 		reg = <0x1e149000 0x0700>;
+		clocks = <&sysc MT7621_CLK_XTAL>;
 		#phy-cells = <1>;
 	};
 
 	pcie2_phy: pcie-phy@1e14a000 {
 		compatible = "mediatek,mt7621-pci-phy";
 		reg = <0x1e14a000 0x0700>;
+		clocks = <&sysc MT7621_CLK_XTAL>;
 		#phy-cells = <1>;
 	};
 };