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From: Richard Cochran <richardcochran@gmail.com>
To: Vladimir Oltean <olteanv@gmail.com>
Cc: kuba@kernel.org, davem@davemloft.net, netdev@vger.kernel.org,
	jacob.e.keller@intel.com, yangbo.lu@nxp.com,
	xiaoliang.yang_1@nxp.com, po.liu@nxp.com,
	UNGLinuxDriver@microchip.com
Subject: Re: [PATCH net-next 2/2] testptp: add new options for perout phase and pulse width
Date: Mon, 20 Jul 2020 17:29:22 -0700	[thread overview]
Message-ID: <20200721002922.GD21585@hoboy> (raw)
In-Reply-To: <20200720175559.1234818-3-olteanv@gmail.com>

On Mon, Jul 20, 2020 at 08:55:59PM +0300, Vladimir Oltean wrote:
> Extend the example program for PTP ancillary functionality with the
> ability to configure not only the periodic output's period (frequency),
> but also the phase and duty cycle (pulse width) which were newly
> introduced.
> 
> The ioctl level also needs to be updated to the new PTP_PEROUT_REQUEST2,
> since the original PTP_PEROUT_REQUEST doesn't support this
> functionality. For an in-tree testing program, not having explicit
> backwards compatibility is fine, as it should always be tested with the
> current kernel headers and sources.
> 
> Tested with an oscilloscope on the felix switch PHC:
> 
> echo '2 0' > /sys/class/ptp/ptp1/pins/switch_1588_dat0
> ./testptp -d /dev/ptp1 -p 1000000000 -w 100000000 -H 1000 -i 0
> 
> Signed-off-by: Vladimir Oltean <olteanv@gmail.com>

Thanks for following up with this!

Acked-by: Richard Cochran <richardcochran@gmail.com>

  reply	other threads:[~2020-07-21  0:29 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-20 17:55 [PATCH net-next 0/2] Extend testptp with PTP perout waveform Vladimir Oltean
2020-07-20 17:55 ` [PATCH net-next 1/2] testptp: promote 'perout' variable to int64_t Vladimir Oltean
2020-07-21  0:27   ` Richard Cochran
2020-07-20 17:55 ` [PATCH net-next 2/2] testptp: add new options for perout phase and pulse width Vladimir Oltean
2020-07-21  0:29   ` Richard Cochran [this message]
2020-07-21  1:05 ` [PATCH net-next 0/2] Extend testptp with PTP perout waveform David Miller

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