diff --git a/configs/tanix_tx1_defconfig b/configs/tanix_tx1_defconfig
index 28cf9513c30..00e34dc5ad9 100644
--- a/configs/tanix_tx1_defconfig
+++ b/configs/tanix_tx1_defconfig
@@ -14,11 +14,13 @@ CONFIG_MACH_SUN50I_H616=y
 CONFIG_SUNXI_DRAM_H616_LPDDR3=y
 CONFIG_R_I2C_ENABLE=y
 # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+CONFIG_MMC_SUNXI_SLOT_EXTRA=2
 CONFIG_SPL_I2C=y
 CONFIG_SPL_SYS_I2C_LEGACY=y
 CONFIG_SYS_I2C_MVTWSI=y
 CONFIG_SYS_I2C_SLAVE=0x7f
 CONFIG_SYS_I2C_SPEED=400000
+CONFIG_SUPPORT_EMMC_BOOT=y
 CONFIG_AXP313_POWER=y
 CONFIG_AXP_DCDC3_VOLT=1200
 CONFIG_USB_EHCI_HCD=y
diff --git a/configs/x96_mate_defconfig b/configs/x96_mate_defconfig
index bd9b611d6f5..c0628370df9 100644
--- a/configs/x96_mate_defconfig
+++ b/configs/x96_mate_defconfig
@@ -11,6 +11,7 @@ CONFIG_DRAM_SUNXI_TPR11=0xffffdddd
 CONFIG_DRAM_SUNXI_TPR12=0xfedf7557
 CONFIG_MACH_SUN50I_H616=y
 CONFIG_SUNXI_DRAM_H616_DDR3_1333=y
+CONFIG_MMC_SUNXI_SLOT_EXTRA=2
 CONFIG_R_I2C_ENABLE=y
 # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
 CONFIG_SPL_I2C=y