Enable the GMAC0 node for the Agilex5 device when using the NAND
daughter card.

Signed-off-by: Boon Khai Ng <boon.khai.ng@altera.com>
---
 .../dts/intel/socfpga_agilex5_socdk_nand.dts   | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_nand.dts b/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_nand.dts
index 38a582ef86b4..ec4541d44c9b 100644
--- a/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_nand.dts
+++ b/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_nand.dts
@@ -10,6 +10,7 @@ / {
 
 	aliases {
 		serial0 = &uart0;
+		ethernet0 = &gmac0;
 	};
 
 	chosen {
@@ -36,6 +37,23 @@ memory@80000000 {
 	};
 };
 
+&gmac0 {
+	status = "okay";
+	phy-mode = "rgmii-id";
+	phy-handle = <&emac0_phy0>;
+	max-frame-size = <9000>;
+
+	mdio0 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "snps,dwmac-mdio";
+
+		emac0_phy0: ethernet-phy@0 {
+			reg = <0>;
+		};
+	};
+};
+
 &gpio0 {
 	status = "okay";
 };
-- 
2.35.3