Automatically choose focal plane
This applies to the main camera only.
It needs an "IPU" module.
The modules are not compiled in, so they probably don't need to have a strong upstream push.
Focus is exposed as a control on a separate subdevice.
Can choose between contrast-detection and phase-detection autofocus. The latter warrants additional work on post-processing that would remove focus pixels. Contrast detection is the only thing that works in tiny preview mode.