I want to enable UART1, UART4, UART5 on NanoPi R6C board for comunication purposes.
I follow https://wiki.friendlyelec.com/wiki/index.php/NanoPi_R6C#Build_Other_Linux to access kernel menuconfig.
I have searched in kernel menuconfig but these is no option to enable UART1, UART4, UART5. I contact to friendlyelec support and they said i have to enable in device tree, but i have never work with device tree before, and i can not find any guide to enable UART (except the debugger UART was enable in default)
Does anyone do this before? Can you please guide me step to do it or give me some guide to do this or any other ways to enable other UART on NanoPi R6C?