...@redhat.com; sassm...@redhat.com; Bowers,
> AndrewX
> Subject: Re: [net-next 06/15] ixgbe: fix PTP SDP pin setup on X540 hardware
>
> On Thu, Jun 06, 2019 at 08:37:59PM +, Keller, Jacob E wrote:
> > No. We use the timecounter to track the time offset, not the
> > fre
On Thu, Jun 06, 2019 at 08:37:59PM +, Keller, Jacob E wrote:
> No. We use the timecounter to track the time offset, not the
> frequency. That is, our hardware can't represent 64bits of time, but
> it can adjust frequency. The time counter is used to track the
> adjustments from adjtime and set
...@redhat.com; sassm...@redhat.com; Bowers,
> AndrewX
> Subject: Re: [net-next 06/15] ixgbe: fix PTP SDP pin setup on X540 hardware
>
> On Wed, Jun 05, 2019 at 01:23:49PM -0700, Jeff Kirsher wrote:
> > + * It calculates when the system time will be on an exact second, and t
On Wed, Jun 05, 2019 at 01:23:49PM -0700, Jeff Kirsher wrote:
> + * It calculates when the system time will be on an exact second, and then
> + * aligns the start of the PPS signal to that value.
> + *
> + * This works by using the cycle counter shift and mult values in reverse,
> and
> + * assume
