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Linux/AM5728: Enabling RS-485 port

Part Number: AM5728
Other Parts Discussed in Thread: AM5718

Tool/software: Linux

Hello we are  using AM571x IDK board to test some communication apps in RS485 port. however the serial port seems disabled.

 

In one of the forum posts theres one answer to modify the am57xx-beagle-x15-revc.dts file.

http://e2e.ti.com/support/processors/f/791/t/762768?Linux-AM5728-Enable-UART

But no definition of serial or uart in this file. There are some other related files online, but no guide on how to modify them.

 

Could you advice?

 

Thanks.