diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 74a8770..585c310 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -628,9 +628,10 @@
 #define ATH9K_PCI_CUS198     0x0001
 #define ATH9K_PCI_CUS230     0x0002
 #define ATH9K_PCI_CUS217     0x0004
-#define ATH9K_PCI_WOW        0x0008
-#define ATH9K_PCI_BT_ANT_DIV 0x0010
-#define ATH9K_PCI_D3_L1_WAR  0x0020
+#define ATH9K_PCI_CUS252     0x0008
+#define ATH9K_PCI_WOW        0x0010
+#define ATH9K_PCI_BT_ANT_DIV 0x0020
+#define ATH9K_PCI_D3_L1_WAR  0x0040
 
 /*
  * Default cache line size, in bytes.
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index 9a1f349..4fe05358 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -547,6 +547,9 @@
 	if (sc->driver_data & ATH9K_PCI_CUS217)
 		ath_info(common, "CUS217 card detected\n");
 
+	if (sc->driver_data & ATH9K_PCI_CUS252)
+		ath_info(common, "CUS252 card detected\n");
+
 	if (sc->driver_data & ATH9K_PCI_BT_ANT_DIV) {
 		pCap->hw_caps |= ATH9K_HW_CAP_BT_ANT_DIV;
 		ath_info(common, "Set BT/WLAN RX diversity capability\n");
diff --git a/drivers/net/wireless/ath/ath9k/pci.c b/drivers/net/wireless/ath/ath9k/pci.c
index b43a2ec..465574b 100644
--- a/drivers/net/wireless/ath/ath9k/pci.c
+++ b/drivers/net/wireless/ath/ath9k/pci.c
@@ -270,6 +270,18 @@
 	{ PCI_VDEVICE(ATHEROS, 0x0034) }, /* PCI-E  AR9462 */
 	{ PCI_VDEVICE(ATHEROS, 0x0037) }, /* PCI-E  AR1111/AR9485 */
 
+	/* CUS252 */
+	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
+			 0x0036,
+			 PCI_VENDOR_ID_ATHEROS,
+			 0x3028),
+	  .driver_data = ATH9K_PCI_CUS252 | ATH9K_PCI_BT_ANT_DIV },
+	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_ATHEROS,
+			 0x0036,
+			 PCI_VENDOR_ID_AZWAVE,
+			 0x2176),
+	  .driver_data = ATH9K_PCI_CUS252 | ATH9K_PCI_BT_ANT_DIV },
+
 	/* PCI-E AR9565 (WB335) */
 	{ PCI_VDEVICE(ATHEROS, 0x0036),
 	  .driver_data = ATH9K_PCI_BT_ANT_DIV },