Many people have been asking about support of magnetic encoders. I surveyed the magnetic encoder offering from ams, RLS (Renishaw), MagAlpha, US Digital, and Posital.
My finding was that the ams AS5047P is likely to be the best candidate.
From what I understand from the datasheet, without any SPI configuration, the ABI incremental interface will be active with a resolution of 4000 CPR. Therefore we can add the drivers and config later, and try it out immediately.
I encourage someone to have a go!