Arnd,

If the feature set depends on the port number, we should think about
the way it gets handled again, as this is probably better not described
as something that depends (just) on the SoC, but on the way it gets
integrated. Maybe we can introduce an additional property for the
checksums on jumbo frames and use that if present but fall back to
identifying by compatible string otherwise.

I think adding a property, taking also compatible strings will be the
best solution.

Best regards,
Marcin