No native CAN bus Interface on CM5 and CM3 modules

I bought a few CM5 modules based on the brochures saying they support CAN interfaces. But after checking the schematics and hardware docs, there’s no clear way to access these CAN ports. It seems the feature isn’t actually usable.

This was a key reason for my purchase, so I’d really appreciate some technical clarification from your side.

can interface is not available in linux 6.1 for the driver issue, but available in linux 5.10.