Re: [Linuxptp-devel] [PATCH v7 1/2] pmc_agent: Add option to run callback for signaling messages

[Maciek M. <ma...@ma...>]

On 04/12/2023 17:46, Richard Cochran wrote:
> On Mon, Dec 04, 2023 at 08:39:47AM +0100, Maciek Machnikowski wrote:
>> Hey, please take a look at these patches and merge them if there are no
>> bugs in this code.
> 
> I don't understand the need for this series.
> What problem does it solve?
> 
> Thanks,
> Richard

If you have a remote node that is connected to a PPS signal and have no
trusted NTP or NMEA data you can use an incoming PTP traffic for
recovering the ToD for a given PPS.

It solves this problem for Assisted Partial Timing Support (APTS)
deployment where a node is connected to the PPS signal from a GNSS
receiver, but doesn't have the serial port (e.x. shared GNSS receiver).

Thanks,
Maciek