On Thu, Jul 02, 2020 at 04:46:09PM +0200, Frieder Schrempf wrote: > My intention is to use the spidev driver in the default board DT for an > interface that is routed to an extension connector and has no dedicated > slave device attached onboard. So users can attach sensors, etc. with > userspace drivers without touching the kernel or DT.
The expected way of doing this is to describe whatever was attached via DT when it's attached - the device is what has the compatible, not some connector in the middle of the connection. The way you've got things set up if the device has a driver then they won't be able to instantiate the driver.
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