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

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Date:   Thu, 20 Oct 2022 04:38:51 +0000
From:   Wei Fang <wei.fang@....com>
To:     Jakub Kicinski <kuba@...nel.org>
CC:     "davem@...emloft.net" <davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Frank Li <frank.li@....com>
Subject: RE: [PATCH net-next] net: fec: Add support for periodic output signal
 of PPS


> -----Original Message-----
> From: Jakub Kicinski <kuba@...nel.org>
> Sent: 2022年10月20日 10:13
> To: Wei Fang <wei.fang@....com>
> Cc: davem@...emloft.net; edumazet@...gle.com; pabeni@...hat.com;
> netdev@...r.kernel.org; linux-kernel@...r.kernel.org; Frank Li
> <frank.li@....com>
> Subject: Re: [PATCH net-next] net: fec: Add support for periodic output signal
> of PPS
> 
> On Wed, 19 Oct 2022 13:08:08 +0800 wei.fang@....com wrote:
> > From: Wei Fang <wei.fang@....com>
> >
> > 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.

Okay, thanks!