I inserted a line to the target / linux / rockchip / patches-5.4 / 001-rockchip-rk3328-Add-support-for-FriendlyARM-NanoPi-R.patch file that reads: soccer random
"Okay" is the state of the UART1; +;
UART1 is operational at the moment.
Moderators: chensy, FATechsupport