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