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| author | Jimmy Assarsson <extja@kvaser.com> | 2024-07-01 17:49:33 +0200 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2024-08-05 17:39:02 +0200 |
| commit | 0aa639d3b3b9a90fd7ee198de58f368bf4add580 (patch) | |
| tree | 1a5c5be23955fe33cb293703cc3863e1c53531ef /tools/testing/selftests/bpf/prog_tests/tracing_struct.c | |
| parent | c644c9698d8dcd1a09934976d1d0720925f7bd78 (diff) | |
can: kvaser_usb: leaf: Add hardware timestamp support to usbcan devices
Add hardware timestamp support for all usbcan based devices (M16C).
The usbcan firmware is slightly different compared to the other Kvaser USB
interfaces:
- The timestamp is provided by a 32-bit counter, with 10us resolution.
Hence, the hardware timestamp will wrap after less than 12 hours.
- Each Rx CAN or Tx ACK command only contains the 16-bits LSB of the
timestamp counter.
- The 16-bits MSB are sent in an asynchronous event (command), if any
change occurred in the MSB since the last event.
Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20240701154936.92633-13-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/tracing_struct.c')
0 files changed, 0 insertions, 0 deletions