Support for console on a Tegra TCU serial port

configname: CONFIG_SERIAL_TEGRA_TCU_CONSOLE

Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Serial drivers
└─>Support for console on a Tegra TCU serial port
In linux kernel since version 5.1 (release Date: 2019-05-05)  
If you say Y here, it will be possible to use a the Tegra TCU as the
system console (the system console is the device which receives all
kernel messages and warnings and which allows logins in single user
mode).

If unsure, say Y.