Re: [Intel-wired-lan] [PATCH] e1000e: fix link fluctuations problem

[Sasha Neftin]

On 07/05/2024 15:10, Andrew Lunn wrote:
> On Tue, May 07, 2024 at 11:24:05AM +0200, En-Wei WU wrote:
> > > Why PHY is this?
> > It's the Intel I219-LM, and I haven't found any other device having
> > the same issue.
>
> There is no Linux PHY driver for this device, only the code buried in
> the e1000e MAC driver. Sometimes Intel use Marvell PHYs, and there are
> a couple of work arounds in the Marvell PHY driver, which might of
> given you a clue. But not in this case...

In I219-* parts used LSI PHY. This PHY is compliant with the 802.3 IEEE 
standard if I recall correctly. Auto-negotiation and link establishment 
are processed following the IEEE standard and could vary from platform 
to platform but are not violent to the IEEE standard.

En-Wei, My recommendation is not to accept these patches. If you think 
there is a HW/PHY problem - open a ticket on Intel PAE.

Sasha

>        Andrew