Oh right! I assumed (dangerous I know) that you had both working. The buttons on the top are really a bit pointless for the purposes of Linux use (though I guess they're easy to read ;-)
Sadly the way PS/2 works is that the keyboard controller itself, not the main ARM is the clock master and it does comms at something like 70K so the interrupt handler needs to be fairly responsive to not risk missing a pulse when it is "talking". In the end we had to apply FIQ patches to the kernel and do the PS/2 on a FIQ handler to get it reliable enough so it would interwork with the modem interrupts which also need fairly fast response as well.
Cliff
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