Re: [PATCH net-next v3] net: phy: broadcom: add 1000Base-X support for BCM54616S

From: Andrew Lunn
Date: Sun Aug 04 2019 - 12:22:26 EST

> > Even if that were the case (patching phy_attach_direct to apply a
> > logical-or to dev_flags), it sounds fishy to me that the genphy code
> > is unable to determine that this PHY is running in 1000Base-X mode.
> >
> > In my opinion it all boils down to this warning:
> >
> > "PHY advertising (0,00000200,000062c0) more modes than genphy
> > supports, some modes not advertised".
> >
> The genphy code deals with Clause 22 + Gigabit BaseT only.
> Question is whether you want aneg at all in 1000Base-X mode and
> what you want the config_aneg callback to do.
> There may be some inspiration in the Marvel PHY drivers.

As far as i know, you cannot actually advertise 1000Base-X. So we
probably should not be setting the bit in advertise, only having it in