As long as they have power enough for Linux, then VA would work. We support both, ARM 32 and 64 bits and our dependencies on Linux are very little. You can see more here:
We have used ourselves in Raspberry Pi Zero, 3 and soon will be testing on 4. It works on Rock64. See this:
It also worked with NVIDIA JetsonTX2 which is a monster of 256 cores GPU:
and we will testing soon on a Jetson Nano too.
Finally, we tested a lot of different OSes... Raspbian, Ubuntu, Armbian, Tegra, etc...
If you have more questions, let us know.
Best,