From: "Neftin, Sasha" <sasha.neftin@intel.com>
To: Jacob Keller <jacob.e.keller@intel.com>,
<intel-wired-lan@osuosl.org>,
"Ruinskiy, Dima" <dima.ruinskiy@intel.com>,
"Efrati, Nir" <nir.efrati@intel.com>,
"Lifshits, Vitaly" <vitaly.lifshits@intel.com>
Cc: "Neftin, Sasha" <sasha.neftin@intel.com>
Subject: Re: [Intel-wired-lan] [PATCH iwl-net v2 1/1] e1000e: Workaround for sporadic MDI error on Meteor Lake systems
Date: Tue, 10 Oct 2023 08:20:05 +0300 [thread overview]
Message-ID: <3736b168-b736-4355-bed3-6bc4ff99aca3@intel.com> (raw)
In-Reply-To: <36fec88d-3083-a2df-b0f5-7e2262157a68@intel.com>
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.
>
> Especially having cases where we disable re-try which is a bit awkward.
> I don't have any alternative suggestion tho...
>
> Thanks,
> Jake
> _______________________________________________
> Intel-wired-lan mailing list
> Intel-wired-lan@osuosl.org
> https://lists.osuosl.org/mailman/listinfo/intel-wired-lan
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next prev parent reply other threads:[~2023-10-10 5:20 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-05 5:44 [Intel-wired-lan] [PATCH iwl-net v2 1/1] e1000e: Workaround for sporadic MDI error on Meteor Lake systems Vitaly Lifshits
2023-10-09 21:28 ` Jacob Keller
2023-10-10 5:20 ` Neftin, Sasha [this message]
2023-10-10 20:16 ` Keller, Jacob E
2023-10-10 20:50 ` Jacob Keller
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