diff --git a/configs/A20-OLinuXino-Lime2_defconfig b/configs/A20-OLinuXino-Lime2_defconfig
index 11171d3..903e3fd 100644
--- a/configs/A20-OLinuXino-Lime2_defconfig
+++ b/configs/A20-OLinuXino-Lime2_defconfig
@@ -18,6 +18,8 @@
 CONFIG_DFU_RAM=y
 CONFIG_FASTBOOT_CMD_OEM_FORMAT=y
 CONFIG_SYS_I2C_MVTWSI=y
+CONFIG_SYS_I2C_SLAVE=0x7f
+CONFIG_SYS_I2C_SPEED=400000
 CONFIG_PHY_REALTEK=y
 CONFIG_RTL8211X_PHY_FORCE_MASTER=y
 CONFIG_ETH_DESIGNWARE=y