[U-Boot-Users] BDI2000 with pxa255

[Matej Kupljen]

Hi

> Can somebody point me to the possible causes for this behaviour?

Reset line.

> PS. Is it mandatory to supply ~RESET pin to BDI? 

Yes.
BDI2000 uses ~RESET to upload the debug handler into the mini IC.
See figure 10-11 in the Intel Xscale Microarchitecture User's Manual.

> Can I just keep it in reset with a jumper closed? 

Well, if you can match the timing and probably you should have a 
pull-up on the ~RESET line of the JTAG connector to the BDI2000,
but I doubt it.

Matej