X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Fjtag%2Fdrivers%2Fmpsse.c;h=92f9331a543c39385eaa538eaa64889bab62e879;hp=d6cbc8404c6e93330f3f38d6ed87317776b0e617;hb=452248af1d06cb1140b85f53ef4fdee1c746d807;hpb=d9a02fda075c466dd4a37785d886a4b1ee382242

diff --git a/src/jtag/drivers/mpsse.c b/src/jtag/drivers/mpsse.c
index d6cbc8404c..92f9331a54 100644
--- a/src/jtag/drivers/mpsse.c
+++ b/src/jtag/drivers/mpsse.c
@@ -55,6 +55,7 @@
 #define FTDI_DEVICE_OUT_REQTYPE (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE)
 #define FTDI_DEVICE_IN_REQTYPE (0x80 | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE)
 
+#define BITMODE_RESET 0x00
 #define BITMODE_MPSSE 0x02
 
 #define SIO_RESET_REQUEST             0x00
@@ -312,6 +313,19 @@ struct mpsse_ctx *mpsse_open(const uint16_t *vid, const uint16_t *pid, const cha
 		goto error;
 	}
 
+	err = libusb_control_transfer(ctx->usb_dev,
+			FTDI_DEVICE_OUT_REQTYPE,
+			SIO_SET_BITMODE_REQUEST,
+			0x0b | (BITMODE_RESET << 8),
+			ctx->index,
+			NULL,
+			0,
+			ctx->usb_write_timeout);
+	if (err < 0) {
+		LOG_ERROR("unable to reset bitmode: %d", err);
+		goto error;
+	}
+
 	err = libusb_control_transfer(ctx->usb_dev,
 			FTDI_DEVICE_OUT_REQTYPE,
 			SIO_SET_BITMODE_REQUEST,