Re: [U-Boot-Users] disable serial console?

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.