On Thu, Mar 19, 2026 at 04:43:40PM +0100, Andrew Lunn wrote:

quoted

+&eqos {
+	phy-handle = <&ethphy1>;
+	phy-mode = "rgmii-id";
+	pinctrl-0 = <&pinctrl_eqos>;
+	pinctrl-names = "default";
+	status = "okay";
+
+	mdio {
+		compatible = "snps,dwmac-mdio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		clock-frequency = <5000000>;

Is that a valid property for "snps,dwmac-mdio"?

It is a valid property in 
Documentation/devicetree/bindings/net/mdio.yaml

Regards
Peng

~/linux/drivers/net/ethernet/stmicro/stmmac$ grep  clock-frequency *
~/linux/drivers/net/ethernet/stmicro/stmmac$ 

Andrew