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Date:   Thu, 15 Sep 2022 01:12:46 +0200
From:   Matej Vasilevski <>
To:     Pavel Pisa <>,
        Ondrej Ille <>,
        Wolfgang Grandegger <>,
        Marc Kleine-Budde <>,
        "David S. Miller" <>,
        Eric Dumazet <>,
        Jakub Kicinski <>,
        Paolo Abeni <>,
        Rob Herring <>,
        Krzysztof Kozlowski <>
        Matej Vasilevski <>
Subject: [PATCH v3 0/3] can: ctucanfd: hardware rx timestamps reporting


this is the v3 patch for CTU CAN FD hardware timestamps reporting.

Changes since v2:
- proper timestamping clock handling
	- clocks manually enabled using clk_prepare_enable, then managed
	  by runtime PM (if runtime PM is enabled)
	- driver should work even without CONFIG_PM
- access to the timecounter is now protected by a spinlock
- harmonized with Vincent's patch - TX timestamping capability is now
  correctly reported
- work_delay_jiffies stored as unsigned long instead of u32
- max work delay limited to 3600 seconds (instead of 86k seconds)
- adressed the rest of the comments from the patch V2 review

Changes since v1:
- Removed kconfig option to enable/disable timestamps.
- Removed dt parameters ts-frequency and ts-used-bits. Now the user
  only needs to add the timestamping clock phandle to clocks, and even
  that is optional.
- Added SIOCSHWTSTAMP ioctl to enable/disable timestamps.
- Adressed comments from the RFC review.

Matej Vasilevski (3):
  dt-bindings: can: ctucanfd: add another clock for HW timestamping
  can: ctucanfd: add HW timestamps to RX and error CAN frames
  doc: ctucanfd: RX frames timestamping for platform devices

 .../bindings/net/can/ctu,ctucanfd.yaml        |  19 +-
 .../can/ctu/ctucanfd-driver.rst               |  13 +-
 drivers/net/can/ctucanfd/Makefile             |   2 +-
 drivers/net/can/ctucanfd/ctucanfd.h           |  20 ++
 drivers/net/can/ctucanfd/ctucanfd_base.c      | 235 ++++++++++++++++--
 drivers/net/can/ctucanfd/ctucanfd_pci.c       |   5 +-
 drivers/net/can/ctucanfd/ctucanfd_platform.c  |   5 +-
 drivers/net/can/ctucanfd/ctucanfd_timestamp.c |  70 ++++++
 8 files changed, 342 insertions(+), 27 deletions(-)
 create mode 100644 drivers/net/can/ctucanfd/ctucanfd_timestamp.c

base-commit: c9ae520ac3faf2f272b5705b085b3778c7997ec8

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