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SubjectRE: [PATCH] e1000e: fix timing for 82579 Gigabit Ethernet controller
Date
> From: netdev-owner@vger.kernel.org [mailto:netdev-
> owner@vger.kernel.org] On Behalf Of Bernd Faust
> Sent: Thursday, February 16, 2017 10:42 AM
> To: Kirsher, Jeffrey T <jeffrey.t.kirsher@intel.com>; Lubetkin, YanirX
> <yanirx.lubetkin@intel.com>; intel-wired-lan@lists.osuosl.org;
> netdev@vger.kernel.org; linux-kernel@vger.kernel.org
> Cc: Bernd Faust <berndfaust@gmail.com>
> Subject: [PATCH] e1000e: fix timing for 82579 Gigabit Ethernet controller
>
> After an upgrade to Linux kernel v4.x the hardware timestamps of the
> 82579 Gigabit Ethernet Controller are different than expected.
> The values that are being read are almost four times as big as before
> the kernel upgrade.
>
> The difference is that after the upgrade the driver sets the clock
> frequency to 25MHz, where before the upgrade it was set to 96MHz. Intel
> confirmed that the correct frequency for this network adapter is 96MHz.
>
> Signed-off-by: Bernd Faust <berndfaust@gmail.com>
> ---
> drivers/net/ethernet/intel/e1000e/netdev.c | 6 ++++++
> 1 file changed, 6 insertions(+)

Tested-by: Aaron Brown <aaron.f.brown@intel.com>

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