Pin Mux Utility also warn the user if there's a conflict in mux usage (e.g. the same pin configured for two function) and does not allow to export the source code when this kind of problems arise. Please take a look, for example, at [[Additional UART on Linux (Naon)]] article for a step-by-step guide in how to change pin mux configuration and how to fix conflicts.

=== Pin Mux Configuration in u-boot ===