[Intel-wired-lan] [PATCH v3] i40e: add support for PTP external synchronization clock

[Bowers, AndrewX]

> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces at osuosl.org> On Behalf Of
> Piotr Kwapulinski
> Sent: Tuesday, July 28, 2020 6:48 AM
> To: intel-wired-lan at lists.osuosl.org
> Cc: Kwapulinski, Piotr <piotr.kwapulinski at intel.com>
> Subject: [Intel-wired-lan] [PATCH v3] i40e: add support for PTP external
> synchronization clock
> 
> Add support for external synchronization clock via GPIOs.
> 1PPS signals are handled via the dedicated 3 GPIOs: SDP3_2,
> SDP3_3 and GPIO_4.
> Previously it was not possible to use the external PTP synchronization clock.
> 
> Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov at intel.com>
> Reviewed-by: Arkadiusz Kubalewski <arkadiusz.kubalewski at intel.com>
> Signed-off-by: Piotr Kwapulinski <piotr.kwapulinski at intel.com>
> ---
>  drivers/net/ethernet/intel/i40e/i40e.h        |  76 +-
>  drivers/net/ethernet/intel/i40e/i40e_main.c   |  18 +-
>  drivers/net/ethernet/intel/i40e/i40e_ptp.c    | 747 +++++++++++++++++-
>  .../net/ethernet/intel/i40e/i40e_register.h   |  31 +-
>  4 files changed, 845 insertions(+), 27 deletions(-)

Tested-by: Andrew Bowers <andrewx.bowers at intel.com>