“fun” fact: most of these embedded boards (Rockchip RK3399, NXP i.MX) have such half-assed PCIe host controllers that their BAR space is too tiny for GPUs.
Would be hilarious if the Broadcom thing on the Pi 4 turns out to be the one that’s GPU-capable!
There’s some discussion with the author of the linked post on possible GPU support: https://news.ycombinator.com/item?id=20399652
Yeah, I posted there a lot. (floatboth is me on the orange website :D)