Re: [PATCH net-next 1/3] ptp: add ability to configure duty cycle for periodic output

2020-07-16 Thread Jacob Keller
On 7/16/2020 3:09 PM, Vladimir Oltean wrote: > On Fri, Jul 17, 2020 at 12:49:27AM +0300, Vladimir Oltean wrote: >> On Thu, Jul 16, 2020 at 02:36:45PM -0700, Jacob Keller wrote: >>> >>> >>> On 7/16/2020 2:20 PM, Vladimir Oltean wrote: There are external event timestampers (PHCs with support

Re: [PATCH net-next 1/3] ptp: add ability to configure duty cycle for periodic output

2020-07-16 Thread Vladimir Oltean
On Fri, Jul 17, 2020 at 12:49:27AM +0300, Vladimir Oltean wrote: > On Thu, Jul 16, 2020 at 02:36:45PM -0700, Jacob Keller wrote: > > > > > > On 7/16/2020 2:20 PM, Vladimir Oltean wrote: > > > There are external event timestampers (PHCs with support for > > > PTP_EXTTS_REQUEST) that timestamp both

Re: [PATCH net-next 1/3] ptp: add ability to configure duty cycle for periodic output

2020-07-16 Thread Vladimir Oltean
On Thu, Jul 16, 2020 at 02:36:45PM -0700, Jacob Keller wrote: > > > On 7/16/2020 2:20 PM, Vladimir Oltean wrote: > > There are external event timestampers (PHCs with support for > > PTP_EXTTS_REQUEST) that timestamp both event edges. > > > > When those edges are very close (such as in the case o

Re: [PATCH net-next 1/3] ptp: add ability to configure duty cycle for periodic output

2020-07-16 Thread Jacob Keller
On 7/16/2020 2:20 PM, Vladimir Oltean wrote: > There are external event timestampers (PHCs with support for > PTP_EXTTS_REQUEST) that timestamp both event edges. > > When those edges are very close (such as in the case of a short pulse), > there is a chance that the collected timestamp might be

[PATCH net-next 1/3] ptp: add ability to configure duty cycle for periodic output

2020-07-16 Thread Vladimir Oltean
There are external event timestampers (PHCs with support for PTP_EXTTS_REQUEST) that timestamp both event edges. When those edges are very close (such as in the case of a short pulse), there is a chance that the collected timestamp might be of the rising, or of the falling edge, we never know. Th