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Diffstat (limited to 'include/linux/ptp_clock_kernel.h')
-rw-r--r--include/linux/ptp_clock_kernel.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/ptp_clock_kernel.h b/include/linux/ptp_clock_kernel.h
index fdffa6a98d79..f8e8443a8b35 100644
--- a/include/linux/ptp_clock_kernel.h
+++ b/include/linux/ptp_clock_kernel.h
@@ -77,8 +77,10 @@ struct ptp_system_timestamp {
* nominal frequency in parts per million, but with a
* 16 bit binary fractional field.
*
- * @adjphase: Adjusts the phase offset of the hardware clock.
- * parameter delta: Desired change in nanoseconds.
+ * @adjphase: Indicates that the PHC should use an internal servo
+ * algorithm to correct the provided phase offset.
+ * parameter delta: PHC servo phase adjustment target
+ * in nanoseconds.
*
* @adjtime: Shifts the time of the hardware clock.
* parameter delta: Desired change in nanoseconds.