diff --git a/configs/ci20_mmc_defconfig b/configs/ci20_mmc_defconfig
new file mode 100644
index 0000000..c1b1c3f
--- /dev/null
+++ b/configs/ci20_mmc_defconfig
@@ -0,0 +1,48 @@
+CONFIG_MIPS=y
+CONFIG_SPL_LDSCRIPT="arch/mips/mach-jz47xx/jz4780/u-boot-spl.lds"
+CONFIG_SYS_TEXT_BASE=0x80010000
+CONFIG_SPL_GPIO_SUPPORT=y
+CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_SYS_MALLOC_F_LEN=0x2000
+CONFIG_SPL_MMC_SUPPORT=y
+CONFIG_SPL=y
+CONFIG_ARCH_JZ47XX=y
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_FIT=y
+CONFIG_USE_BOOTARGS=y
+CONFIG_BOOTARGS="console=ttyS4,115200 rw rootwait root=/dev/mmcblk0p1"
+CONFIG_USE_BOOTCOMMAND=y
+CONFIG_BOOTCOMMAND="ext4load mmc 0:1 0x88000000 /boot/uImage; bootm 0x88000000"
+CONFIG_MISC_INIT_R=y
+CONFIG_DISPLAY_CPUINFO=y
+CONFIG_BOARD_EARLY_INIT_F=y
+# CONFIG_SPL_BANNER_PRINT is not set
+# CONFIG_TPL_BANNER_PRINT is not set
+CONFIG_HUSH_PARSER=y
+CONFIG_CMD_DM=y
+# CONFIG_CMD_FLASH is not set
+CONFIG_CMD_MMC=y
+CONFIG_CMD_DHCP=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_FAT=y
+# CONFIG_SPL_DOS_PARTITION is not set
+CONFIG_DEFAULT_DEVICE_TREE="ci20"
+CONFIG_ENV_IS_IN_MMC=y
+# CONFIG_DM_WARN is not set
+# CONFIG_DM_DEVICE_REMOVE is not set
+CONFIG_JZ4780_EFUSE=y
+CONFIG_MMC=y
+CONFIG_MMC_BROKEN_CD=y
+CONFIG_DM_MMC=y
+# CONFIG_MMC_HW_PARTITIONING is not set
+CONFIG_MMC_IO_VOLTAGE=y
+CONFIG_MMC_UHS_SUPPORT=y
+CONFIG_MMC_HS400_SUPPORT=y
+# CONFIG_MMC_VERBOSE is not set
+CONFIG_SPL_MMC_TINY=y
+CONFIG_JZ47XX_MMC=y
+CONFIG_DM_SERIAL=y
+CONFIG_SYS_NS16550=y
+CONFIG_USE_TINY_PRINTF=y
+CONFIG_SPL_TINY_MEMSET=y
+CONFIG_LZO=y