\EM3568_Buildroot\kernel\arch\arm64\boot\dts\rockchip\rk3568-evb2-lp4x-v10.dtsi
&gmac0 {
phy-mode = "rgmii";
clock_in_out = "input";
snps,reset-gpio = <&gpio0 RK_PA5 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<