@tokabe
Hi,
On i.MX8m Platform, our roadmap is based on SOM board. For now, we have finished MYIR i.MX8m board and AVNET Maaxboard(mini) board.

http://wiki.veye.cc/index.php/NXP_i.MX_Application_Note_Index

The coral.ai board from google is in progress.

So the linux version we use now depends on the system version that comes with the SOM board.
We have a V5.y version driver on raspiberry PI, maybe this will help you.
http://wiki.veye.cc/index.php/V4L2_mode_for_Raspberry_Pi

Of course, we will transplant all product drivers, including CS-MIP-IMX307, to i.MX8m. This work is also in progress.