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authorJonathan Lemon <jonathan.lemon@gmail.com>2022-03-03 00:34:59 +0300
committerDavid S. Miller <davem@davemloft.net>2022-03-03 17:42:46 +0300
commit4db073174f95653c5436615fc3a9a8dbae659b65 (patch)
treec0bb335d9596b820951fc0dcc1ecedbc2dcdba9e /Documentation/ABI
parente68462a0d99dff5879ca10d4d1da978e6142c9ec (diff)
downloadlinux-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-timecard22
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>