Subject: Re: [PATCH net-next v3 1/2] ptp: add control over HW timestamp latch point

From: Jakub Kicinski <[email-masked]>
Date: Tue, 5 Nov 2024 18:04:57 -0800

On Wed,  6 Nov 2024 02:07:55 +0100 Arkadiusz Kubalewski wrote:
> +What:		/sys/class/ptp/ptp<N>/ts_point
> +Date:		October 2024
> +Contact:	Arkadiusz Kubalewski <[email-masked]>
> +Description:
> +		This file provides control over the point in time in
> +		which the HW timestamp is latched. As specified in IEEE
> +		802.3cx, the latch point can be either at the beginning
> +		or after the end of Start of Frame Delimiter (SFD).
> +		Value "1" means the timestamp is latched at the
> +		beginning of the SFD. Value "2" means that timestamp is
> +		latched after the end of SFD.

Richard has the final say but IMO packet timestamping config does not
belong to the PHC, rather ndo_hwtstamp_set.