OMAPL-138 UART Problem

Hi,

I am using OMAPL-138 LCDK.I want to use UART1 for my application.I made needed hardware modifications to enable UART1:

Remove R205,R208

Short R206,R209.

I am programming with Linux OS.I still cannot communicate over UART1 while I am communication with UART2.There are lots of posts about this to change pin mux etc. So, should I make further changes pin mux or etc? Because I am already using Linux OS. Can you help me on this, what can the problem be?

Thanks,

Serhat Ağırbaş