riscv: dts: sophgo: sg2044: Add ethernet control device

Add ethernet control node for sg2044.

Link: https://lore.kernel.org/r/20250608232836.784737-9-inochiama@gmail.com
Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
Signed-off-by: Chen Wang <wangchen20@iscas.ac.cn>

Author: inochisa

arch/riscv/boot/dts/sophgo/sg2044-sophgo-srd3-10.dts

@@ -36,6 +36,23 @@
 	status = "okay";
 };
 
+&gmac0 {
+	phy-handle = <&phy0>;
+	phy-mode = "rgmii-id";
+	status = "okay";
+
+	mdio {
+		phy0: phy@0 {
+			compatible = "ethernet-phy-ieee802.3-c22";
+			reg = <0>;
+			reset-gpios = <&porta 28 GPIO_ACTIVE_LOW>;
+			reset-assert-us = <10000>;
+			reset-deassert-us = <10000>;
+			rx-internal-delay-ps = <2050>;
+		};
+	};
+};
+
 &i2c1 {
 	status = "okay";
 

arch/riscv/boot/dts/sophgo/sg2044.dtsi

@@ -111,6 +111,68 @@
 			status = "disabled";
 		};
 
+		gmac0: ethernet@7030006000 {
+			compatible = "sophgo,sg2044-dwmac", "snps,dwmac-5.30a";
+			reg = <0x70 0x30006000 0x0 0x4000>;
+			clocks = <&clk CLK_GATE_AXI_ETH0>,
+				 <&clk CLK_GATE_PTP_REF_I_ETH0>,
+				 <&clk CLK_GATE_TX_ETH0>;
+			clock-names = "stmmaceth", "ptp_ref", "tx";
+			dma-noncoherent;
+			interrupt-parent = <&intc>;
+			interrupts = <296 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "macirq";
+			resets = <&rst RST_ETH0>;
+			reset-names = "stmmaceth";
+			snps,multicast-filter-bins = <0>;
+			snps,perfect-filter-entries = <1>;
+			snps,aal;
+			snps,tso;
+			snps,txpbl = <32>;
+			snps,rxpbl = <32>;
+			snps,mtl-rx-config = <&gmac0_mtl_rx_setup>;
+			snps,mtl-tx-config = <&gmac0_mtl_tx_setup>;
+			snps,axi-config = <&gmac0_stmmac_axi_setup>;
+			status = "disabled";
+
+			mdio {
+				compatible = "snps,dwmac-mdio";
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+
+			gmac0_mtl_rx_setup: rx-queues-config {
+				snps,rx-queues-to-use = <8>;
+				snps,rx-sched-wsp;
+				queue0 {};
+				queue1 {};
+				queue2 {};
+				queue3 {};
+				queue4 {};
+				queue5 {};
+				queue6 {};
+				queue7 {};
+			};
+
+			gmac0_mtl_tx_setup: tx-queues-config {
+				snps,tx-queues-to-use = <8>;
+				queue0 {};
+				queue1 {};
+				queue2 {};
+				queue3 {};
+				queue4 {};
+				queue5 {};
+				queue6 {};
+				queue7 {};
+			};
+
+			gmac0_stmmac_axi_setup: stmmac-axi-config {
+				snps,blen = <16 8 4 0 0 0 0>;
+				snps,wr_osr_lmt = <1>;
+				snps,rd_osr_lmt = <2>;
+			};
+		};
+
 		emmc: mmc@703000a000 {
 			compatible = "sophgo,sg2044-dwcmshc", "sophgo,sg2042-dwcmshc";
 			reg = <0x70 0x3000a000 0x0 0x1000>;