[flashrom] Problem with flashrom and FT2232 Port B

[Nico Huber]

Hi Zak,

On 21.03.2017 17:28, Zak wrote:
> Hello,
> 
> I got flashrom compiled for windows and it works like a charm (has to
> tweet the code a little, add data for the chips i want to work with, add
> 4BA and fast rading for FT2232), it works perfectly fine but only for
> the port A (flashrom -p ft2232_spi:type=2232H,port=A)
> 
> Using default programmer "ft2232_spi" with arguments "type=2232H,port=A".
> Calibrating delay loop... OK.
> Found Macronix flash chip "flashrom -p
> ft2232_spi:type=2232H,port=AMX25L25665E" (32768 kB, SPI)
> on ft2232_spi.
> Reading flash... (0% to done.)
> 
> If i use the port B (flashrom -p ft2232_spi:type=2232H,port=B), i get
> this error
> 
> Calibrating delay loop... OK.
> Unable to reset FTDI device (USB device unavailable).
> Unable to set latency timer (USB device unavailable).
> Unable to set bitmode to SPI (USB device unavailable).
> ftdi_write_data: -666, USB device unavailable
> Error: Programmer initialization failed.
> 
> I get this error also if i try to compile with make
> CONFIG_DEFAULT_PROGRAMMER=PROGRAMMER_FT2232_SPI
> CONFIG_DEFAULT_PROGRAMMER_ARGS="type=2232H,port=B" to force port B
> 
> I looked around i didn't find any solution to fix this, anyone could
> give me a hand?

the problem probably lies within your (windows) version of libftdi. I'd
try another OS / libftdi to rule that out.

Nico