NanoPi NEO uart1(ttyS1) enable

[qqq558877]

Hello!
I'm using NanoPi NEO and FRIENDLYWRT. I found that is not possible to send data via ttyS1, I think that UART1 is disabled in the kernel. How do I create an OpenWRT with UART1 enabled ?

[padwelfare]

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.