[PATCH net] net: sparx5: Fix invalid timestamps

[Aakash Menon]

> > Bit 270-271 are occasionally unexpectedly set by the hardware. This issue
> > was observed with 10G SFPs causing huge time errors (> 30ms) in PTP. Only
> > 30 bits are needed for the nanosecond part of the timestamp, clear 2 most
> > significant bits before extracting timestamp from the internal frame
> > header.
> >
> > Fixes: 70dfe25cd866 ("net: sparx5: Update extraction/injection for
> > timestamping")
> > Signed-off-by: Aakash Menon <aakash.menon at protempis.com>
>
> There are some small issues/comments with this patch:
> 1. The Fixes tag should still be on one line even if it is longer than
> 75 columns, so the robots can find it.
> 2. Please use GENMASK(5, 0) instead of 0x3f.

Hi Horatiu,
Thanks for your feedback. I will make the suggested changes and send a
v2 patch in a new email thread.

- Aakash