> -----Original Message-----
> From: Neftin, Sasha <[email protected]>
> Sent: Monday, October 9, 2023 10:20 PM
> To: Keller, Jacob E <[email protected]>; [email protected];
> Ruinskiy, Dima <[email protected]>; Efrati, Nir <[email protected]>;
> Lifshits, Vitaly <[email protected]>
> Cc: Neftin, Sasha <[email protected]>
> Subject: Re: [Intel-wired-lan] [PATCH iwl-net v2 1/1] e1000e: Workaround for
> sporadic MDI error on Meteor Lake systems
>
> On 10/10/2023 0:28, Jacob Keller wrote:
> >
> >
> > On 10/4/2023 10:44 PM, Vitaly Lifshits wrote:
> >> On some Meteor Lake systems accessing the PHY via the MDIO interface may
> >> result in an MDI error. This issue happens sporadically and in most cases
> >> a second access to the PHY via the MDIO interface results in success.
> >>
> >> As a workaround, introduce a retry counter which is set to 3 on Meteor
> >> Lake systems. The driver will only return an error if 3 consecutive PHY
> >> access attempts fail. The retry mechanism is disabled in specific flows,
> >> where MDI errors are expected.
> >>
> >
> > A bit ugly. I assume we don't have any idea of the root cause of MDI issues?
>
> Agree.
> We haven't a root cause yet. This problem is under debugging. We prefer
> to keep it in the net-queue for widespread testing meanwhile.
>
Makes sense, thanks for the explanation.
> >
> > Especially having cases where we disable re-try which is a bit awkward.
> > I don't have any alternative suggestion tho...
> >
> > Thanks,
> > Jake
> > _______________________________________________
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> > [email protected]
> > https://lists.osuosl.org/mailman/listinfo/intel-wired-lan
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