igorp wrote:
You can build your own kernel https://github.com/armbian/build
- adjusted stock
- experimental mainline 4.19.y

Right, I already have a built kernel. I'm not quite sure where I should flash the image. Please see my original post.

Right now, I managed to flash an Arch Linux rootfs to an eMMC card and it loads perfectly, although I've tried replacing the existing uboot and kernel with no success. While most guides for the rockchip say to directly add these images to the mmcblk1 disk, the NEO4 shows separate mmcblk1boot0 and mm...

I'd also be interested in this-- it'd be nice if somehow there were a way to hook up the pin headers to a standard PCI-e x2 card. I would love a way to be able to hook up a SATA x2 RAID controller to the pins.