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.h...@intel.com> > [jstultz: Reworked to use new interface, commit message tweaks] > Signed-off-by: John Stultz <john.stu...@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.kirs...@intel.com>
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