[U-Boot-Users] disable serial console?

[Holger Schurig]

> By the way it is a PXA based board.

The UART in the PXA is coded in a way that you virtually can't make any 
errors. E.g. on UART driver for one driver works on all brands of PXA 
boards. You even can't forget to solder some IRQ pin.

So, if on ONE board the UART doesn't work, then I'd say it's a hardware 
issue. Look at the serial line driver, look at the crystal oszillator 
that is responsible for the UART timings.