RK3568-ANDROID11-双以太网

RK3568\kernel\arch\arm64\boot\dts\rockchip\rk3568-evb1-ddr4-v10.dtsi
//重点是复位RESET
&gmac0 {
	phy-mode = "rgmii";
	clock_in_out = "output";

	snps,reset-gpio = <&gpio1 RK_PB0 GPIO_ACTIVE_LOW>;
	snps,reset-active-low;
	/* Reset time is 20ms, 100ms for rtl8211f */
	snps,reset-delays-us = <0 20000 100000>;

	assigned-clocks = <&cru SCLK_GMAC0_RX_TX>, <&cru SCLK_GMAC0>;
	assigned-clock-parents = <&cru SCLK_GMAC0_RGMII_SPEED>, <&cru CLK_MAC0_2TOP>;
	assigned-clock-rates = <0>, <125000000>;

	pinctrl-names = "default";
	pinctrl-0 = <&gmac0_miim
		     &gmac0_tx_bus2
		     &gmac0_rx_bus2
		     &gmac0_rgmii_clk
		     &gmac0_rgmii_bus>;

	tx_delay = <0x3c>;
	rx_delay = <0x2f>;

	phy-handle = <&rgmii_phy0>;
	status = "okay";
};


&mdio0 {
	rgmii_phy0: phy@0 {
		compatible = "ethernet-phy-ieee802.3-c22";
		reg = <0x0>;
	};
};


&gmac1 {
	phy-mode = "rgmii";
	clock_in_out = "output";

	snps,reset-gpio = <&gpio1 RK_PB1 GPIO_ACTIVE_LOW>;
	snps,reset-active-low;
	/* Reset time is 20ms, 100ms for rtl8211f */
	snps,reset-delays-us = <0 20000 100000>;

	assigned-clocks = <&cru SCLK_GMAC1_RX_TX>, <&cru SCLK_GMAC1>;
	assigned-clock-parents = <&cru SCLK_GMAC1_RGMII_SPEED>, <&cru CLK_MAC1_2TOP>;
	assigned-clock-rates = <0>, <125000000>;

	pinctrl-names = "default";
	pinctrl-0 = <&gmac1m1_miim
		     &gmac1m1_tx_bus2
		     &gmac1m1_rx_bus2
		     &gmac1m1_rgmii_clk
		     &gmac1m1_rgmii_bus>;

	tx_delay = <0x4f>;
	rx_delay = <0x26>;

	phy-handle = <&rgmii_phy1>;
	status = "okay";
};


&mdio1 {
	rgmii_phy1: phy@0 {
		compatible = "ethernet-phy-ieee802.3-c22";
		reg = <0x0>;
	};
};

 详细参考：\rk3568\RKDocs\common\GMAC\

Rockchip_Developer_Guide_Ethernet_CN.pdf

Rockchip_Developer_Guide_Linux_GMAC_CN.pdf

Rockchip_Developer_Guide_Linux_GMAC_Mode_Configuration_CN.pdf

 Rockchip_Developer_Guide_Linux_GMAC_RGMII_Delayline_CN.pdf

Rockchip_Developer_Guide_Linux_GMAC_RGMII_Delayline_EN.pdf