I’m guessing it will work, but will suggest this experiment for you…
Install gtkterm on your Jetson (“sudo apt-get install gtkterm”). Take the UART you are going to use (I am using J17’s “/dev/ttyTHS2”, a.k.a., “/dev/ttyS2” as an example), and set up for loopback: Wire the TX and RX together…optionally, if flow control is to be used, also wire CTS to RTS. Then run this command and see if the text you type in to the terminal echos back or not (use “sudo” if not a member of group “dialout”):
gtkterm -b 8 -t 1 -s 256000 -p /dev/ttyTHS2
Note: “ttyTHS2” and “ttyS2” refer to the same hardware, but the “S2” refers to the more common generic Linux driver, and the “THS2” corresponds to the “Tegra High Speed” DMA-enabled driver. Use only one at a time.