diff --git a/br-ext-chip-goke/board/gk7205v200/kernel/gk7205v200.generic.config b/br-ext-chip-goke/board/gk7205v200/kernel/gk7205v200.generic.config
index df34d80d..e1f809d6 100644
--- a/br-ext-chip-goke/board/gk7205v200/kernel/gk7205v200.generic.config
+++ b/br-ext-chip-goke/board/gk7205v200/kernel/gk7205v200.generic.config
@@ -1042,7 +1042,7 @@ CONFIG_NET_CORE=y
 # CONFIG_NETCONSOLE is not set
 # CONFIG_NETPOLL is not set
 # CONFIG_NET_POLL_CONTROLLER is not set
-# CONFIG_TUN is not set
+CONFIG_TUN=y
 # CONFIG_TUN_VNET_CROSS_LE is not set
 # CONFIG_VETH is not set
 # CONFIG_NLMON is not set
diff --git a/br-ext-chip-xiongmai/board/xm510/kernel/xm510.generic.config b/br-ext-chip-xiongmai/board/xm510/kernel/xm510.generic.config
index bf0da095..c01362d7 100644
--- a/br-ext-chip-xiongmai/board/xm510/kernel/xm510.generic.config
+++ b/br-ext-chip-xiongmai/board/xm510/kernel/xm510.generic.config
@@ -695,7 +695,6 @@ CONFIG_SERIO_LIBPS2=y
 #
 # Character devices
 #
-CONFIG_TTY=y
 # CONFIG_VT is not set
 CONFIG_UNIX98_PTYS=y
 # CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
@@ -721,7 +720,7 @@ CONFIG_SERIAL_CORE_CONSOLE=y
 # CONFIG_SERIAL_ALTERA_JTAGUART is not set
 # CONFIG_SERIAL_ALTERA_UART is not set
 # CONFIG_SERIAL_XILINX_PS_UART is not set
-# CONFIG_TTY_PRINTK is not set
+CONFIG_TTY_PRINTK=y
 # CONFIG_HVC_DCC is not set
 # CONFIG_IPMI_HANDLER is not set
 # CONFIG_HW_RANDOM is not set