I asked a question about this a few weeks ago and didn't get any response,
so maybe it was too specific of a question.
I have a Connext + BreakoutGS board and want to use the NSSP (SPI) + LCD
signals. When I initialize PXAFB, I see a square wave on the LCD's PCLock.
As soon as I run the Direct Register Access SPI example
(http://docwiki.gumstix.org/index.php/Sample_code/C/SPI ), the LCD PCLOCK
signal goes dead (noise w/ about 200mV P-P). Can anyone suggest what the
problem could be or what I should check? Are there conflicts with the
registers when I do this? I don't see why it could be, because the register
values for SPI is was not set to that of the LCD (0x41400000 for NSSP and
0x44000000 for LCD).
Any help would be greatly appreciated.