linux-kernel - [PATCH net-next v3 0/2] ptp: add control over HW timestamp latch point

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Message-Id: <20241106010756.1588973-1-arkadiusz.kubalewski@intel.com>
Date: Wed,  6 Nov 2024 02:07:54 +0100
From: Arkadiusz Kubalewski <arkadiusz.kubalewski@...el.com>
To: netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	intel-wired-lan@...ts.osuosl.org
Cc: anthony.l.nguyen@...el.com,
	przemyslaw.kitszel@...el.com,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	richardcochran@...il.com,
	Arkadiusz Kubalewski <arkadiusz.kubalewski@...el.com>
Subject: [PATCH net-next v3 0/2] ptp: add control over HW timestamp latch point

HW support of ptp/timesync solutions in network PHY chips can be
achieved with two different approaches, the timestamp maybe latched
either in the beginning or after the Start of Frame Delimiter (SFD) [1].

Allow ptp device drivers to provide user with control over the timestamp
latch point.

[1] https://www.ieee802.org/3/cx/public/april20/tse_3cx_01_0420.pdf

v3:
- move new enum ptp_ts_point to uapi ptp_clock.h and add NONE value to
  indicate that the timestamp latch point was not provided by the HW,
  allow further changes to ethtool netlink interface exstensions.

Arkadiusz Kubalewski (2):
  ptp: add control over HW timestamp latch point
  ice: ptp: add control over HW timestamp latch point

 Documentation/ABI/testing/sysfs-ptp         | 12 +++++
 drivers/net/ethernet/intel/ice/ice_ptp.c    | 44 +++++++++++++++
 drivers/net/ethernet/intel/ice/ice_ptp_hw.c | 60 +++++++++++++++++++++
 drivers/net/ethernet/intel/ice/ice_ptp_hw.h |  2 +
 drivers/ptp/ptp_sysfs.c                     | 44 +++++++++++++++
 include/linux/ptp_clock_kernel.h            | 12 +++++
 include/uapi/linux/ptp_clock.h              | 18 +++++++
 7 files changed, 192 insertions(+)

base-commit: 0452a2d8b8b98a5b1a9139c1a9ed98bccee356cc
-- 
2.38.1