Greetings @vix,
Currently the state of RPMSG in Torizon and our 5.X BSP in general is “undefined” at best. There are aspects that do work, but many others that do not, or haven’t been tested thoroughly to know their state at the time. I also can’t give any definite timelines on when full RPMSG support will be available at this time.
Could you describe your full use-case/requirement that you want to use RPMSG for?
One thing I can recommend is trying the solution described in this post: RPMSG does not work on IMX8M-Plus
It’s for the Verdin i.MX8M Plus, which is similar to the Verdin i.MX8M Mini, so the same/similar instructions may also apply here.
Best Regards,
Jeremias