&mdio0 { rgmii_phy0: phy@1 { compatible = "ethernet-phy-ieee802.3-c22"; reg = <0x1>; }; }; &gmac0 { // Use rgmii-rxid mode to disable rx delay inside Soc phy-mode = "rgmii-rxid"; clock_in_out = "output"; snps,reset-gpio = <&gpio4 RK_PB3 GPIO_ACTIVE_LOW>; snps,reset-active-low; // Reset time is 20ms, 100ms for rtl8211f snps,reset-delays-us = <0 20000 100000>; pinctrl-names = "default"; pinctrl-0 = <&gmac0_miim &gmac0_tx_bus2 &gmac0_rx_bus2 &gmac0_rgmii_clk &gmac0_rgmii_bus>; tx_delay = <0x44>; // rx_delay = <0x4f>; phy-handle = <&rgmii_phy0>; status = "okay"; };