This is something hopefully suitable to become a 'Board Bring up' thread.
The NanoPC T4 was the smallest RK3399 board around featuring full set of interfaces (Rock960 was smaller but there you can't use GbE without a proprietary expander) but in the meantime he got two smaller siblings: NanoPi M4 and the cute NEO4.
Pros:
Another RK3399 board so software support is already pretty mature
Rich set of interfaces (2 x USB2 without shared bandwidth, 2 x USB3, tripl
I'm Kever Yang from Rockchip BSP team, and I'm in charge of open source for Rockchip SoCs, you should able to see my patches to upstream U-Boot and kernel. Thanks very much to @tkaiser for share this thread to me, and I hope I can do some explanation here so that help developers understand what we are doing.
The github(https://github.com/rockchip-linux/) is owned by Rockchip, and repos on github consider to be a 'Linux SDK' of some of Rockchip SoCs(mainly for RK3328, RK3288, RK3399