diff --git a/configs/Bananapi_defconfig b/configs/Bananapi_defconfig
index 074f747..7f59fc9 100644
--- a/configs/Bananapi_defconfig
+++ b/configs/Bananapi_defconfig
@@ -13,6 +13,8 @@
 CONFIG_NETCONSOLE=y
 CONFIG_SCSI_AHCI=y
 CONFIG_SYS_I2C_MVTWSI=y
+CONFIG_SYS_I2C_SLAVE=0x7f
+CONFIG_SYS_I2C_SPEED=400000
 CONFIG_PHY_REALTEK=y
 CONFIG_ETH_DESIGNWARE=y
 CONFIG_RGMII=y