On Mon, 2016-02-22 at 03:15 -0800, Christopher S. Hall wrote:
> Modern Intel systems supports cross timestamping of the network
> device
> clock and Always Running Timer (ART) in hardware.? This allows the
> device time and system time to be precisely correlated. The timestamp
> pair is returned through e1000e_phc_get_syncdevicetime() used by
> get_system_device_crosststamp().? The hardware cross-timestamp result
> is made available to applications through the PTP_SYS_OFFSET_PRECISE
> ioctl which calls e1000e_phc_getcrosststamp().
> 
> Signed-off-by: Christopher S. Hall <christopher.s.hall@intel.com>
> [jstultz: Reworked to use new interface, commit message tweaks]
> Signed-off-by: John Stultz <john.stultz@linaro.org>
> ---
> ?drivers/net/ethernet/intel/Kconfig????????? |? 9 +++
> ?drivers/net/ethernet/intel/e1000e/defines.h |? 5 ++
> ?drivers/net/ethernet/intel/e1000e/ptp.c???? | 85
> +++++++++++++++++++++++++++++
> ?drivers/net/ethernet/intel/e1000e/regs.h??? |? 4 ++
> ?4 files changed, 103 insertions(+)

Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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