The Pi Zero is a full SoC which naturally runs Linux. Any Linux SoC with USB (so basically all of them) could use used in the same way.

This article is about the RP2350's microcontroller cores. It doesn't even have an MMU, so running Linux on it is much more interesting. It's not as capable as the normal Linux we run on bigger boards, but it's still interesting.

Could Linux on RP2350 cores work with iPad via Pi Zero form factor, with microSD storage to supplement iPad?

https://www.cnx-software.com/2025/07/08/rp2350-pizero-rp2350...