From: Biju Das <biju.das.jz@bp.renesas.com>

Enable the Gigabit Ethernet Interfaces (GBETH0) populated on the RZ/G3L
SMARC EVK. The eth1, pincontrol definitions and hotplug support will be
added later.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
v1->v2:
 * No change
---
 .../boot/dts/renesas/rzg3l-smarc-som.dtsi     | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/rzg3l-smarc-som.dtsi b/arch/arm64/boot/dts/renesas/rzg3l-smarc-som.dtsi
index 7c21afaee9bc..f52af01a7eff 100644
--- a/arch/arm64/boot/dts/renesas/rzg3l-smarc-som.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzg3l-smarc-som.dtsi
@@ -8,6 +8,10 @@
 / {
 	compatible = "renesas,rzg3l-smarcm", "renesas,r9a08g046l48", "renesas,r9a08g046";
 
+	aliases {
+		ethernet0 = &eth0;
+	};
+
 	memory@48000000 {
 		device_type = "memory";
 		/* First 128MB is reserved for secure area. */
@@ -15,6 +19,37 @@ memory@48000000 {
 	};
 };
 
+&eth0 {
+	phy-handle = <&phy0>;
+	phy-mode = "rgmii-id";
+
+	status = "okay";
+};
+
+&eth0_rxc_rx_clk {
+	clock-frequency = <125000000>;
+};
+
 &extal_clk {
 	clock-frequency = <24000000>;
 };
+
+&mdio0 {
+	phy0: ethernet-phy@7 {
+		compatible = "ethernet-phy-id0022.1640",
+			     "ethernet-phy-ieee802.3-c22";
+		reg = <7>;
+		rxc-skew-psec = <1400>;
+		txc-skew-psec = <1400>;
+		rxdv-skew-psec = <0>;
+		txdv-skew-psec = <0>;
+		rxd0-skew-psec = <0>;
+		rxd1-skew-psec = <0>;
+		rxd2-skew-psec = <0>;
+		rxd3-skew-psec = <0>;
+		txd0-skew-psec = <0>;
+		txd1-skew-psec = <0>;
+		txd2-skew-psec = <0>;
+		txd3-skew-psec = <0>;
+	};
+};
-- 
2.43.0