On Sat, Jul 10, 2021 at 10:01:45PM +0200, Alexandre Belloni wrote: > On 10/07/2021 12:25:54-0700, Colin Foster wrote: > > Add support for configuration and control of the VSC7511, VSC7512, VSC7513, and > > VSC7514 chips over a SPI interface. The intent is to control these chips from an > > external CPU. The expectation is to have most of the features of the > > net/ethernet/mscc/ocelot_vsc7514 driver. > > > > I have tried to heed all the advice from my first patch RFC. Thanks to everyone > > for all the feedback. > > > > The current status is that there are two functional "bugs" that need > > investigation: > > 1. The first probe of the internal MDIO bus fails. I suspect this is related to > > power supplies / grounding issues that would not appear on standard hardware. > > Did you properly reset the internal phys? mdio-mscc-miim.c does that. That code looks familiar to what I wrote, but the mdio-mscc-miim.c implementation has the 500ms delay. That might be all I need...