diff --git a/arch/arm64/boot/dts/freescale/imx91-9x9-qsb.dts b/arch/arm64/boot/dts/freescale/imx91-9x9-qsb.dts
index 1239bbf579da..9cbfe57be2d3 100644
--- a/arch/arm64/boot/dts/freescale/imx91-9x9-qsb.dts
+++ b/arch/arm64/boot/dts/freescale/imx91-9x9-qsb.dts
@@ -79,7 +79,6 @@ mdio {
 		compatible = "snps,dwmac-mdio";
 		#address-cells = <1>;
 		#size-cells = <0>;
-		clock-frequency = <5000000>;
 
 		ethphy1: ethernet-phy@1 {
 			compatible = "ethernet-phy-ieee802.3-c22";