RE: [PATCH net-next 1/2] ptp: add control over HW timestamp latch point

From: Kubalewski, Arkadiusz
Date: Wed Oct 23 2024 - 03:37:18 EST


>From: Richard Cochran <richardcochran@xxxxxxxxx>
>Sent: Wednesday, October 23, 2024 4:13 AM
>
>On Mon, Oct 21, 2024 at 04:19:54PM +0200, Arkadiusz Kubalewski wrote:
>> Currently HW support of PTP/timesync solutions in network PHY chips
>> can be implemented with two different approaches, the timestamp maybe
>> latched either at the beginning or after the Start of Frame Delimiter
>(SFD) [1].
>
>Why did 802.3-2012 change the definition of the time stamp position?
>
>Thanks,
>Richard

Good question!
Although, I don't feel like I a right person to answer this, I believe
This was the other way around and they just tried to react on the PHY
chip vendors inconsistencies.

Thank you!
Arkadiusz