ARM: dts: rockchip: Add gmac node for RK3128

RK3128's gmac is based on Synopsys Ethernet GMAC IP core.
Add it to the devicetree.
Signed-off-by: Alex Bee <knaerzche@gmail.com>
Link: https://lore.kernel.org/r/20231202124158.65615-3-knaerzche@gmail.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rockchip/rk3128.dtsi

@@ -525,6 +525,34 @@ pdma: dma-controller@20078000 {
 		#dma-cells = <1>;
 	};
 
+	gmac: ethernet@2008c000 {
+		compatible = "rockchip,rk3128-gmac";
+		reg = <0x2008c000 0x4000>;
+		interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "macirq", "eth_wake_irq";
+		clocks = <&cru SCLK_MAC>,
+			 <&cru SCLK_MAC_RX>, <&cru SCLK_MAC_TX>,
+			 <&cru SCLK_MAC_REF>, <&cru SCLK_MAC_REFOUT>,
+			 <&cru ACLK_GMAC>, <&cru PCLK_GMAC>;
+		clock-names = "stmmaceth",
+			      "mac_clk_rx", "mac_clk_tx",
+			      "clk_mac_ref", "clk_mac_refout",
+			      "aclk_mac", "pclk_mac";
+		resets = <&cru SRST_GMAC>;
+		reset-names = "stmmaceth";
+		rockchip,grf = <&grf>;
+		rx-fifo-depth = <4096>;
+		tx-fifo-depth = <2048>;
+		status = "disabled";
+
+		mdio: mdio {
+			compatible = "snps,dwmac-mdio";
+			#address-cells = <0x1>;
+			#size-cells = <0x0>;
+		};
+	};
+
 	pinctrl: pinctrl {
 		compatible = "rockchip,rk3128-pinctrl";
 		rockchip,grf = <&grf>;