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authorPeter Henn <Peter.Henn@web.de>2012-10-28 22:08:37 +0100
committerAndreas Fritiofson <andreas.fritiofson@gmail.com>2013-03-06 19:03:37 +0000
commitef83a9ee9371f330075a5cb57b0dd515d75df8c2 (patch)
tree07d55e242654447f20a6f4b94e6659e29706b931 /src/target/armv7a.c
parent0f1d00bda65975ede19fc20df3b490b08a7c1afd (diff)
speed up ftdi by reorder to out-in
When the ftdi driver calls finally the mpsse_flush function, it first initiate the USB in and finally the corresponding USB out transaction. Because data in is requested too early the USB device will always answer the first USB in by a NAK. That can prevented by a simple reordering of the out and then the in transfer and can improve the Jtag performance for high JTAG clock rates. Change-Id: I17abf1487c914c92e2e447ee6d30562ef629f327 Signed-off-by: Peter Henn <Peter.Henn@web.de> Reviewed-on: http://openocd.zylin.com/942 Tested-by: jenkins Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com> Reviewed-by: Xiaofan <xiaofanc@gmail.com>
Diffstat (limited to 'src/target/armv7a.c')
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