diff --git a/src/platforms/libftdi/platform.c b/src/platforms/libftdi/platform.c
index 83683c7..3c52de9 100644
--- a/src/platforms/libftdi/platform.c
+++ b/src/platforms/libftdi/platform.c
@@ -83,6 +83,7 @@ cable_desc_t cable_desc[] = {
 		.cbus_ddr  = 0x02,
 		.bitbang_tms_in_port_cmd = GET_BITS_LOW,
 		.bitbang_tms_in_pin = MPSSE_TDO, /* keep bit 5 low*/
+		.bitbang_swd_dbus_read_data = 0x02,
 		.name = "ftdiswd"
 	},
 	{
diff --git a/src/platforms/libftdi/platform.h b/src/platforms/libftdi/platform.h
index b3fae42..b669ad0 100644
--- a/src/platforms/libftdi/platform.h
+++ b/src/platforms/libftdi/platform.h
@@ -58,6 +58,9 @@ typedef struct cable_desc_s {
 	uint8_t cbus_ddr;
 	uint8_t bitbang_tms_in_port_cmd;
 	uint8_t bitbang_tms_in_pin;
+	uint8_t bitbang_swd_dbus_read_data;
+	/* bitbang_swd_dbus_read_data is same as dbus_data,
+	 * as long as CBUS is not involved.*/
 	char *description;
 	char * name;
 }cable_desc_t;
diff --git a/src/platforms/libftdi/swdptap.c b/src/platforms/libftdi/swdptap.c
index 5d6279c..150083b 100644
--- a/src/platforms/libftdi/swdptap.c
+++ b/src/platforms/libftdi/swdptap.c
@@ -84,8 +84,12 @@ static void swdptap_turnaround(uint8_t dir)
 
 	if(dir)	  { /* SWDIO goes to input */
 		cmd[index++] = SET_BITS_LOW;
-		cmd[index++] = active_cable->dbus_data |  MPSSE_MASK;
-		cmd[index++] = active_cable->dbus_ddr  & ~MPSSE_MASK;
+		if (active_cable->bitbang_swd_dbus_read_data)
+			cmd[index] = active_cable->bitbang_swd_dbus_read_data;
+		else
+			cmd[index] = active_cable->dbus_data;
+		index++;
+		cmd[index++] = active_cable->dbus_ddr & ~MPSSE_MASK;
 	}
 	/* One clock cycle */
 	cmd[index++] = MPSSE_TMS_SHIFT;