Subject: Re: [PATCH net-next] net: fec: Add support for periodic output signal of PPS

From: Jakub Kicinski <[email-masked]>
Date: Wed, 19 Oct 2022 19:13:27 -0700

On Wed, 19 Oct 2022 13:08:08 +0800 [email-masked] wrote:
> From: Wei Fang <[email-masked]>
> 
> This patch adds the support for configuring periodic output
> signal of PPS. So the PPS can be output at a specified time
> and period.
> For developers or testers, they can use the command "echo
> <channel> <start.sec> <start.nsec> <period.sec> <period.
> nsec> > /sys/class/ptp/ptp0/period" to specify time and  
> period to output PPS signal.
> Notice that, the channel can only be set to 0. In addtion,
> the start time must larger than the current PTP clock time.
> So users can use the command "phc_ctl /dev/ptp0 -- get" to
> get the current PTP clock time before.

You need to CC Richard C the PTP maintainer on PTP-related
patches, please repost.