+&gmac2 {
+	status = "okay";
+	phy-mode = "rgmii-id";
+	phy-handle = <&emac2_phy0>;
+
+	max-frame-size = <9000>;
+
+	mdio0 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "snps,dwmac-mdio";
+		emac2_phy0: ethernet-phy@1 {
+			reg = <0x1>;
+			adi,rx-internal-delay-ps = <2000>;
+			adi,tx-internal-delay-ps = <2000>;

You have rgmii-id and 2000ps delay? Are these two lines actually
required?

	Andrew