Merge v5.14-rc3 into usb-next

[linux-2.6-microblaze.git] / Documentation / ABI / testing / sysfs-ptp

diff --git a/Documentation/ABI/testing/sysfs-ptp b/Documentation/ABI/testing/sysfs-ptp
index 2363ad8..d378f57 100644 (file)
--- a/Documentation/ABI/testing/sysfs-ptp
+++ b/Documentation/ABI/testing/sysfs-ptp
@@ -33,6 +33,13 @@ Description:
                frequency adjustment value (a positive integer) in
                parts per billion.
 
+What:          /sys/class/ptp/ptpN/max_vclocks
+Date:          May 2021
+Contact:       Yangbo Lu <yangbo.lu@nxp.com>
+Description:
+               This file contains the maximum number of ptp vclocks.
+               Write integer to re-configure it.
+
 What:          /sys/class/ptp/ptpN/n_alarms
 Date:          September 2010
 Contact:       Richard Cochran <richardcochran@gmail.com>
@@ -61,6 +68,19 @@ Description:
                This file contains the number of programmable pins
                offered by the PTP hardware clock.
 
+What:          /sys/class/ptp/ptpN/n_vclocks
+Date:          May 2021
+Contact:       Yangbo Lu <yangbo.lu@nxp.com>
+Description:
+               This file contains the number of virtual PTP clocks in
+               use.  By default, the value is 0 meaning that only the
+               physical clock is in use.  Setting the value creates
+               the corresponding number of virtual clocks and causes
+               the physical clock to become free running.  Setting the
+               value back to 0 deletes the virtual clocks and
+               switches the physical clock back to normal, adjustable
+               operation.
+
 What:          /sys/class/ptp/ptpN/pins
 Date:          March 2014
 Contact:       Richard Cochran <richardcochran@gmail.com>