how easy is it to change the UART 4 (M7 Debug) for user Appliktion on MIMX8MN6

[Sal2020]

Hi,

Is it possible to use UART4 for other application (Not for M7 debug) without hardware changes on i.MX8M Nano?

Can I change the UART 4 for other device communication only via Software like (u-boot, Linux and systemd)?

I don't want to change UART4 as A53 debug like here I would like to stay UART 2 for A53 debug.

regards

[BiyongSUN]

The document tells you everything. Your case is just the subset in the document. 

[igorpadykov · Accepted solution]

Hi Saleem 

one can look at dts example with uart4

https://github.com/digi-embedded/linux/blob/v5.4/dey-3.0/maint/arch/arm64/boot/dts/digi/ccimx8mn-dvk...

Best regards
igor