diff --git a/configs/sam4e-ek/usbnsh/defconfig b/configs/sam4e-ek/usbnsh/defconfig
index af76f90700..ed8824bf3c 100644
--- a/configs/sam4e-ek/usbnsh/defconfig
+++ b/configs/sam4e-ek/usbnsh/defconfig
@@ -293,6 +293,7 @@ CONFIG_SAM34_EMAC_PHYSR_100HD=0x2
 CONFIG_SAM34_EMAC_PHYSR_10FD=0x5
 CONFIG_SAM34_EMAC_PHYSR_100FD=0x6
 CONFIG_SAM34_EMAC_ISETH0=y
+CONFIG_SAM34_EMAC_HPWORK=y
 
 #
 # AT91SAM3/4 USB Full Speed Device Controller driver (DCD) options
@@ -464,6 +465,7 @@ CONFIG_NAME_MAX=32
 # CONFIG_SCHED_STARTHOOK is not set
 # CONFIG_SCHED_ATEXIT is not set
 # CONFIG_SCHED_ONEXIT is not set
+# CONFIG_SIG_EVTHREAD is not set
 
 #
 # Signal Numbers
@@ -472,6 +474,7 @@ CONFIG_SIG_SIGUSR1=1
 CONFIG_SIG_SIGUSR2=2
 CONFIG_SIG_SIGALARM=3
 CONFIG_SIG_SIGCONDTIMEDOUT=16
+CONFIG_SIG_SIGWORK=17
 
 #
 # POSIX Message Queue Options
@@ -483,8 +486,11 @@ CONFIG_MQ_MAXMSGSIZE=32
 #
 # Work queue support
 #
-# CONFIG_SCHED_WORKQUEUE is not set
-# CONFIG_SCHED_HPWORK is not set
+CONFIG_SCHED_WORKQUEUE=y
+CONFIG_SCHED_HPWORK=y
+CONFIG_SCHED_HPWORKPRIORITY=224
+CONFIG_SCHED_HPWORKPERIOD=50000
+CONFIG_SCHED_HPWORKSTACKSIZE=2048
 # CONFIG_SCHED_LPWORK is not set
 
 #
@@ -619,7 +625,6 @@ CONFIG_TELNET_TXBUFFER_SIZE=256
 # CONFIG_NET_DM90x0 is not set
 # CONFIG_ENC28J60 is not set
 # CONFIG_ENCX24J600 is not set
-
 # CONFIG_NET_SLIP is not set
 # CONFIG_NET_FTMAC100 is not set
 
diff --git a/configs/sama5d4-ek/bridge/defconfig b/configs/sama5d4-ek/bridge/defconfig
index 134be3f686..a02e653903 100644
--- a/configs/sama5d4-ek/bridge/defconfig
+++ b/configs/sama5d4-ek/bridge/defconfig
@@ -318,6 +318,7 @@ CONFIG_SAMA5_EMAC1_PHYSR_10FD=0x5
 CONFIG_SAMA5_EMAC1_PHYSR_100FD=0x6
 # CONFIG_SAMA5_EMACB_PREALLOCATE is not set
 # CONFIG_SAMA5_EMACB_NBC is not set
+CONFIG_SAMA5_EMACB_HPWORK=y
 CONFIG_SAMA5_EMAC0_ISETH0=y
 # CONFIG_SAMA5_EMAC1_ISETH0 is not set
 
@@ -500,6 +501,7 @@ CONFIG_NAME_MAX=32
 # CONFIG_SCHED_STARTHOOK is not set
 # CONFIG_SCHED_ATEXIT is not set
 # CONFIG_SCHED_ONEXIT is not set
+# CONFIG_SIG_EVTHREAD is not set
 
 #
 # Signal Numbers
@@ -508,6 +510,7 @@ CONFIG_SIG_SIGUSR1=1
 CONFIG_SIG_SIGUSR2=2
 CONFIG_SIG_SIGALARM=3
 CONFIG_SIG_SIGCONDTIMEDOUT=16
+CONFIG_SIG_SIGWORK=17
 
 #
 # POSIX Message Queue Options
@@ -519,8 +522,11 @@ CONFIG_MQ_MAXMSGSIZE=32
 #
 # Work queue support
 #
-# CONFIG_SCHED_WORKQUEUE is not set
-# CONFIG_SCHED_HPWORK is not set
+CONFIG_SCHED_WORKQUEUE=y
+CONFIG_SCHED_HPWORK=y
+CONFIG_SCHED_HPWORKPRIORITY=224
+CONFIG_SCHED_HPWORKPERIOD=50000
+CONFIG_SCHED_HPWORKSTACKSIZE=2048
 # CONFIG_SCHED_LPWORK is not set
 
 #
@@ -611,7 +617,6 @@ CONFIG_NETDEV_MULTINIC=y
 # CONFIG_NET_DM90x0 is not set
 # CONFIG_ENC28J60 is not set
 # CONFIG_ENCX24J600 is not set
-
 # CONFIG_NET_SLIP is not set
 # CONFIG_NET_FTMAC100 is not set