diff --git a/tools/hciattach_xradio.c b/tools/hciattach_xradio.c
index a0ae7e3..d87185c 100644
--- a/tools/hciattach_xradio.c
+++ b/tools/hciattach_xradio.c
@@ -288,6 +288,20 @@ enum {
 
 #define BT_WAKE_VIA_PROC	1
 
+/* BT_WAKE Polarity - 0=Active Low, 1= Active High */
+#ifndef LPM_BT_WAKE_POLARITY
+#define LPM_BT_WAKE_POLARITY            1    /* maguro */
+#endif
+
+/* BT_WAKE Lock - 2=LOCK, 3= UNLOCK */
+#ifndef LPM_BT_WAKE_LOCK
+#define LPM_BT_WAKE_LOCK            2
+#endif
+
+#ifndef LPM_BT_WAKE_UNLOCK
+#define LPM_BT_WAKE_UNLOCK          3
+#endif
+
 /* proc fs node for enable/disable lpm mode */
 #ifndef VENDOR_LPM_PROC_NODE
 #define VENDOR_LPM_PROC_NODE	"/proc/bluetooth/sleep/lpm"
@@ -298,6 +312,10 @@ enum {
 #define VENDOR_BTWAKE_PROC_NODE	"/proc/bluetooth/sleep/btwrite"
 #endif
 
+#ifndef VENDOR_BTWAKE_PROC_NODE
+#define VENDOR_BTWAKE_PROC_NODE "/proc/bluetooth/sleep/btwake"
+#endif
+
 /*
  * Maximum btwrite assertion holding time without consecutive btwrite kicking.
  * This value is correlative(shorter) to the in-activity timeout period set in
@@ -818,6 +836,44 @@ static int upio_set_bluetooth_power(int on)
 	return ret;
 }
 
+static int upio_set_btwake(int action)
+{
+	int fd = -1;
+	int ret = -1;
+	char buffer = '0';
+
+	if (action == 0) {
+		buffer = '0';
+	} else if (action == LPM_BT_WAKE_POLARITY) {
+		buffer = '1';
+	} else if (action == LPM_BT_WAKE_LOCK) {
+		buffer = '2';
+	} else if (action == LPM_BT_WAKE_UNLOCK) {
+		buffer = '3';
+	} else {
+		printf("Invalid btwake action\n");
+		return -1;
+	}
+
+	fd = open(VENDOR_BTWAKE_PROC_NODE, O_WRONLY);
+	if (fd < 0) {
+		printf("upio_set : open(%s) for write failed: %s (%d)",
+				VENDOR_BTWAKE_PROC_NODE, strerror(errno), errno);
+		return fd;
+	}
+
+	if (write(fd, &buffer, 1) < 0) {
+		printf("upio_set : write(%s) failed: %s (%d)",
+				VENDOR_BTWAKE_PROC_NODE, strerror(errno),errno);
+		return -1;
+	}
+
+	if (fd >= 0)
+		close(fd);
+
+	return 0;
+}
+
 static void upio_init(void)
 {
 	memset(upio_state, UPIO_UNKNOWN, UPIO_MAX_COUNT);
@@ -1340,6 +1396,7 @@ int xradio_init(int fd, int def_speed, int speed, struct termios *ti,
 	usleep(20000);
 
 	upio_init();
+	upio_set_btwake(LPM_BT_WAKE_POLARITY);
 	upio_set(UPIO_LPM_MODE, UPIO_DEASSERT, 0);
 	usleep(50000);