Console on Sunplus UART

configname: CONFIG_SERIAL_SUNPLUS_CONSOLE

Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Serial drivers
└─>Console on Sunplus UART
In linux kernel since version 5.2 (release Date: 2019-07-07)  
Select this option if you would like to use a Sunplus UART as the
system console.
Even if you say Y here, the currently visible virtual console
(/dev/tty0) will still be used as the system console by default, but
you can alter that using a kernel command line option such as
"console=ttySUPx".