Recently I've been trying to build Armbian for Firefly RK3399, since I've purchased this board last year, and it has been lacking proper software support for a long time.
Here is my fork https://github.com/hjc4869/build/tree/development
Basically, It is a copy & paste of what's already done to support Odroid N1, by replacing the Hardkernel's kernel to what Firefly provides (an older 4.4.77 kernel), and replacing the Hardkernel u-boot with rockchip u-boot.
I created a n
Yes, with some patches, in the same repo. Only succeeded to boot the 4.4 legacy kernel, though.
Copy the device tree from FriendlyELEC's kernel, and it boots with Rockchip u-boot and kernel. Their kernel modifications are mostly for their accessories, like several LCD screens, touch screens, etc.
It's a rough port, especially for u-boot. Since T4 does not have upstream u-boot support, and I only spent a few minutes creating the dts file from the Linux one. (Still a lot of