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

From: Richard Cochran
Date: Thu Oct 20 2022 - 08:57:35 EST


On Thu, Oct 20, 2022 at 12:35:56PM +0800, wei.fang@xxxxxxx wrote:
> From: Wei Fang <wei.fang@xxxxxxx>
>
> 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.
>
> Signed-off-by: Wei Fang <wei.fang@xxxxxxx>

Acked-by: Richard Cochran <richardcochran@xxxxxxxxx>