diff --git a/meta-ast2400/recipes-kernel/linux/linux-obmc/defconfig b/meta-ast2400/recipes-kernel/linux/linux-obmc/defconfig
index f966919..771200c 100644
--- a/meta-ast2400/recipes-kernel/linux/linux-obmc/defconfig
+++ b/meta-ast2400/recipes-kernel/linux/linux-obmc/defconfig
@@ -75,6 +75,7 @@
 CONFIG_BLK_DEV_RAM=y
 CONFIG_BLK_DEV_RAM_COUNT=4
 CONFIG_BLK_DEV_RAM_SIZE=8192
+CONFIG_ASPEED_LPC_CTRL=y
 CONFIG_EEPROM_AT24=y
 CONFIG_NETDEVICES=y
 # CONFIG_NET_VENDOR_ARC is not set
@@ -143,6 +144,8 @@
 CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_DS1307=y
 CONFIG_RTC_DRV_ASPEED=y
+CONFIG_MAILBOX=y
+CONFIG_ASPEED_MBOX=y
 # CONFIG_IOMMU_SUPPORT is not set
 CONFIG_FSI=y
 CONFIG_FSI_MASTER_GPIO=y
diff --git a/meta-ast2500/recipes-kernel/linux/linux-obmc/defconfig b/meta-ast2500/recipes-kernel/linux/linux-obmc/defconfig
index 73a5397..2523ef5 100644
--- a/meta-ast2500/recipes-kernel/linux/linux-obmc/defconfig
+++ b/meta-ast2500/recipes-kernel/linux/linux-obmc/defconfig
@@ -78,6 +78,7 @@
 CONFIG_BLK_DEV_RAM=y
 CONFIG_BLK_DEV_RAM_COUNT=4
 CONFIG_BLK_DEV_RAM_SIZE=8192
+CONFIG_ASPEED_LPC_CTRL=y
 CONFIG_EEPROM_AT24=y
 CONFIG_NETDEVICES=y
 # CONFIG_NET_VENDOR_ARC is not set
@@ -147,6 +148,8 @@
 CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_DS1307=y
 CONFIG_RTC_DRV_ASPEED=y
+CONFIG_MAILBOX=y
+CONFIG_ASPEED_MBOX=y
 # CONFIG_IOMMU_SUPPORT is not set
 CONFIG_FSI=y
 CONFIG_FSI_MASTER_GPIO=y