On Mon, Apr 18, 2022 at 08:35:57PM -0300, Luiz Angelo Daros de Luca wrote: > Compatible strings are used to help the driver find the chip ID/version > register for each chip family. After that, the driver can setup the > switch accordingly. Keep only the first supported model for each family > as a compatible string and reference other chip models in the > description. The power supplies needing power before you can actually read the ID registers are the same for all the variations? The RTL8366s has a serdes power supply while the RTL8370 does not. Maybe that doesn't matter as the PHYs probably don't need power to access registers, but I didn't look at more than 2 datasheets. If there's *any* differences in power sequencing then you need specific compatibles. Rob