Signed-off-by: Richard Cochran <richardcoch...@gmail.com>
---
phc2sys.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/phc2sys.c b/phc2sys.c
index aafff6c..70155f9 100644
--- a/phc2sys.c
+++ b/phc2sys.c
@@ -1024,10 +1024,10 @@ static void usage(char *progname)
" -r synchronize system (realtime) clock\n"
" repeat -r to consider it also as a time
source\n"
" manual configuration:\n"
- " -c [dev|name] slave clock (CLOCK_REALTIME)\n"
- " -d [dev] master PPS device\n"
- " -s [dev|name] master clock\n"
- " -O [offset] slave-master time offset (0)\n"
+ " -c [dev|name] time sink device (CLOCK_REALTIME)\n"
+ " -d [dev] time source PPS device\n"
+ " -s [dev|name] time source device\n"
+ " -O [offset] sink-source time offset in seconds (0)\n"
" -w wait for ptp4l\n"
" common options:\n"
" -f [file] configuration file\n"
@@ -1036,8 +1036,8 @@ static void usage(char *progname)
" -I [ki] integration constant (0.3)\n"
" -S [step] step threshold (disabled)\n"
" -F [step] step threshold only on start (0.00002)\n"
- " -R [rate] slave clock update rate in HZ (1.0)\n"
- " -N [num] number of master clock readings per update
(5)\n"
+ " -R [rate] update rate for the time sink devices in HZ
(1.0)\n"
+ " -N [num] number of source clock readings per update
(5)\n"
" -L [limit] sanity frequency limit in ppb (200000000)\n"
" -M [num] NTP SHM segment number (0)\n"
" -u [num] number of clock updates in summary stats (0)\n"
--
2.20.1
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