[Intel-wired-lan] [PATCH iwl-next v2 0/3] ice: implement cross timestamping for E823

[Jacob Keller <jacob.e.keller@intel.com>]

This series fixes and enables cross timestamping for the E823 line of
products. This product line is very similar to E822 devices, but has a new
requirement for cross timestamping to function.

First, Sergey has a patch to cleanup the timer commands to include ICE_PTP_
prefix.

Second, Karol has a fix to ensure that we retry acquiring the hardware
semaphore a few times before giving up when requesting a cross timestamp.

Finally, I implement the E823 cross timestamping, fixing an issue where the
timer command register was not programmed as expected. Without the READ_TIME
bits being set, E823 hardware will not capture the device time.

Changes since v2:
* use ice_ptp_src_cmd() instead of ice_ptp_clean_cmd() in the cross
  timestamping function.
* drop the patch introducing ice_ptp_clean_cmd() as this is superseded by
  the correct fix that resolves the stale commands issue for both the main
  timer and the PHY port timers.

Jacob Keller (1):
  ice: Support cross-timestamping for E823 devices

Karol Kolacinski (1):
  ice: retry acquiring hardware semaphore during cross-timestamp request

Sergey Temerkhanov (1):
  ice: prefix clock timer command enumeration values with ICE_PTP

 drivers/net/ethernet/intel/ice/ice_ptp.c    | 51 ++++++++----
 drivers/net/ethernet/intel/ice/ice_ptp_hw.c | 92 ++++++++++-----------
 drivers/net/ethernet/intel/ice/ice_ptp_hw.h | 12 +--
 3 files changed, 87 insertions(+), 68 deletions(-)


base-commit: 627821f47a1511824efe734a786cbf1454685c81
-- 
2.41.0.1.g9857a21e0017.dirty

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