(In reply to Flavio Castelli from comment #2) > I would be glad to help, but I've never done such a thing... Is there > anything that could help me to understand how to build this KMP? I sent last week a first version of the driver upstream: https://lkml.kernel.org/lkml/c171c837a31dea34c845478b7c7d4bdef865b5e0.camel@suse.de/T/ If you're impatient, this can be packaged into a KMP, and the device-tree patch turned into a DT overlay (this is not compatible, for now, with the ones the RPi guys provide). I'll soon send v2 of the series with a way cleaner driver.