Re: [RFC PATCH v2 net-next 0/8] Add support for VSC7511-7514 chips over SPI

On Sat, Jul 10, 2021 at 10:01:45PM +0200, Alexandre Belloni wrote:

On 10/07/2021 12:25:54-0700, Colin Foster wrote:

quoted

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...