uboot/configs/nanopi_m1_defconfig
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   1CONFIG_ARM=y
   2CONFIG_ARCH_SUNXI=y
   3CONFIG_DEFAULT_DEVICE_TREE="sun8i-h3-nanopi-m1"
   4CONFIG_SPL=y
   5CONFIG_MACH_SUN8I_H3=y
   6CONFIG_DRAM_CLK=408
   7# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
   8CONFIG_USB_EHCI_HCD=y
   9CONFIG_USB_OHCI_HCD=y
  10