1CONFIG_SPL=y 2CONFIG_SYS_EXTRA_OPTIONS="AXP209_POWER,SUNXI_GMAC,RGMII,AHCI,SATAPWR=SUNXI_GPH(2),USB_EHCI" 3CONFIG_DEFAULT_DEVICE_TREE="sun7i-a20-pcduino3-nano" 4CONFIG_GMAC_TX_DELAY=3 5CONFIG_USB1_VBUS_PIN="PH11" 6CONFIG_ARM=y 7CONFIG_ARCH_SUNXI=y 8CONFIG_MACH_SUN7I=y 9CONFIG_DRAM_CLK=408 10CONFIG_DRAM_ZQ=122 11CONFIG_DRAM_EMR1=4 12CONFIG_ETH_DESIGNWARE=y 13