diff --git a/target/linux/cns3xxx/config-default b/target/linux/cns3xxx/config-default
index 02a88ced0..a0660f2d8 100644
--- a/target/linux/cns3xxx/config-default
+++ b/target/linux/cns3xxx/config-default
@@ -40,6 +40,7 @@ CONFIG_CPU_V6=y
 CONFIG_DEBUG_BUGVERBOSE=y
 # CONFIG_DEBUG_USER is not set
 CONFIG_DECOMPRESS_GZIP=y
+CONFIG_DMA_CACHE_RWFO=y
 # CONFIG_DWC_DEBUG is not set
 # CONFIG_DWC_DEVICE_ONLY is not set
 # CONFIG_DWC_HOST_ONLY is not set
@@ -97,6 +98,7 @@ CONFIG_KERNEL_GZIP=y
 CONFIG_KTIME_SCALAR=y
 CONFIG_LEDS_GPIO=y
 # CONFIG_LEDS_TRIGGER_NETDEV is not set
+CONFIG_LOCAL_TIMERS=y
 CONFIG_M25PXX_USE_FAST_READ=y
 CONFIG_MACH_CNS3420VB=y
 CONFIG_MACH_GW2388=y
@@ -114,6 +116,7 @@ CONFIG_MTD_PHYSMAP=y
 CONFIG_NEED_DMA_MAP_STATE=y
 CONFIG_NEED_PER_CPU_KM=y
 CONFIG_NLS=y
+CONFIG_NR_CPUS=2
 CONFIG_OUTER_CACHE=y
 CONFIG_OUTER_CACHE_SYNC=y
 CONFIG_PAGEFLAGS_EXTENDED=y
@@ -141,6 +144,8 @@ CONFIG_SENSORS_AD7418=y
 CONFIG_SENSORS_GSP=y
 CONFIG_SERIAL_8250_NR_UARTS=3
 CONFIG_SERIAL_8250_RUNTIME_UARTS=3
+CONFIG_SMP=y
+CONFIG_SMP_ON_UP=y
 CONFIG_SPI=y
 CONFIG_SPI_BITBANG=y
 CONFIG_SPI_CNS3XXX=y