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phc2sys: update help message. 

Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
master
Miroslav Lichvar 2012-11-01 15:15:36 +01:00 committed by Richard Cochran
parent d0714a9fac
commit 3d599e2d5d
1 changed files with 9 additions and 9 deletions
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16
phc2sys.c
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@ -233,15 +233,15 @@ static void usage(char *progname)
fprintf(stderr,
"\n"
"usage: %s [options]\n\n"
" -c [device] slave clock device, default CLOCK_REALTIME\n"
" -d [device] master device, source of PPS events\n"
" -c [dev|name] slave clock (CLOCK_REALTIME)\n"
" -d [dev] master PPS device\n"
" -s [dev|name] master clock\n"
" -i [iface] master clock by network interface\n"
" -P [kp] proportional constant (0.7)\n"
" -I [ki] integration constant (0.3)\n"
" -R [rate] slave clock update rate in HZ (1)\n"
" -N [num] number of master clock readings per update (5)\n"
" -h prints this message and exits\n"
" -s [device] set the time from this PHC device\n"
" -i [device] set the time from PHC connected to this eth device\n"
" -P [val] set proportional constant to 'val'\n"
" -I [val] set integration constant to 'val'\n"
" -R [val] set PHC update rate to 'val' Hz\n"
" -N [val] set number of PHC readings per update\n"
"\n",
progname);
}