diff --git a/configs/q8_a13_tablet_defconfig b/configs/q8_a13_tablet_defconfig
index 39ac90b..f269b8a 100644
--- a/configs/q8_a13_tablet_defconfig
+++ b/configs/q8_a13_tablet_defconfig
@@ -17,5 +17,7 @@
 # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
 CONFIG_SPL_I2C=y
 CONFIG_SYS_I2C_MVTWSI=y
+CONFIG_SYS_I2C_SLAVE=0x7f
+CONFIG_SYS_I2C_SPEED=400000
 CONFIG_CONS_INDEX=2
 CONFIG_USB_MUSB_HOST=y