[UART] Increasing baud rate of the UART on the armbian

[MikitaValatovich]

Hello!

I met next problem: I need configure UART communication with baud rate 1 Mb/s (or 2 or 3). But internal clock of the bus is 1.5 MHz, and if i try to communicate with 1 Mb/s, error is too big. Is it possible somehow change internal clock of the uart? Or maybe any other possibilities how to configure such communication ? 
Or maybe you know any models with higher internal clock of the bus (Like on 6.5 MHz on raspberry pi 4, for example) ?

Now one section is equal to 1.333 microseconds, but it should be 1.0 mcs. 
 I found same topic at this forum, but it's no solution there:

 

 

Thank you and have a good day