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| author | Jonathan Lemon <jonathan.lemon@gmail.com> | 2022-03-03 00:34:59 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-03-03 17:42:46 +0300 |
| commit | 4db073174f95653c5436615fc3a9a8dbae659b65 (patch) | |
| tree | c0bb335d9596b820951fc0dcc1ecedbc2dcdba9e /Documentation/ABI | |
| parent | e68462a0d99dff5879ca10d4d1da978e6142c9ec (diff) | |
| download | linux-4db073174f95653c5436615fc3a9a8dbae659b65.tar.xz | |
docs: ABI: Document new timecard sysfs nodes.
Add documentation for the tod_correction, clock_status_drift,
and clock_status_offset nodes.
Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-timecard | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-timecard b/Documentation/ABI/testing/sysfs-timecard index 97f6773794a5..5bf78486a469 100644 --- a/Documentation/ABI/testing/sysfs-timecard +++ b/Documentation/ABI/testing/sysfs-timecard @@ -63,6 +63,18 @@ Description: (RW) Contains the current synchronization source used by the PHC. May be changed by writing one of the listed values from the available_clock_sources attribute set. +What: /sys/class/timecard/ocpN/clock_status_drift +Date: March 2022 +Contact: Jonathan Lemon <jonathan.lemon@gmail.com> +Description: (RO) Contains the current drift value used by the firmware + for internal disciplining of the atomic clock. + +What: /sys/class/timecard/ocpN/clock_status_offset +Date: March 2022 +Contact: Jonathan Lemon <jonathan.lemon@gmail.com> +Description: (RO) Contains the current offset value used by the firmware + for internal disciplining of the atomic clock. + What: /sys/class/timecard/ocpN/gnss_sync Date: September 2021 Contact: Jonathan Lemon <jonathan.lemon@gmail.com> @@ -126,6 +138,16 @@ Description: (RW) These attributes specify the direction of the signal The 10Mhz reference clock input is currently only valid on SMA1 and may not be combined with other destination sinks. +What: /sys/class/timecard/ocpN/tod_correction +Date: March 2022 +Contact: Jonathan Lemon <jonathan.lemon@gmail.com> +Description: (RW) The incoming GNSS signal is in UTC time, and the NMEA + format messages do not provide a TAI offset. This sets the + correction value for the incoming time. + + If UBX_LS is enabled, this should be 0, and the offset is + taken from the UBX-NAV-TIMELS message. + What: /sys/class/timecard/ocpN/ts_window_adjust Date: September 2021 Contact: Jonathan Lemon <jonathan.lemon@gmail.com> |