Changes

With the default configuration, UARTs 3/4/5 are driven by the SYSCLK8 clock, which runs at 192 MHz; UARTs 0/1/2 are driven by SYSCLK10, which runs at 48 MHz. In this situation, setting the port speed (using the '''stty''' command, for example) gives the following resultsat X baud means that UARTs 0/1/2 actually works at X baud, while UARTs 3/4/5 get a 4x multiplying factor on speed value, working at 4*X baud: