AM335X System time jump change

AM3358

Linux

System Time jump change，when using "date" to get it.

Hardware Time is OK(several seconds change, I think it is ok), when using"hwclock" to get it.

I write a program to monitor system time change, when the system time doesn't go orderly, the program  record it.

some record is below:

2015-04-03 18:33:51 1428086031 1428086031
2015-04-05 07:19:15 1428218355 131072
2015-04-06 20:03:18 1428350598 131072
2015-04-05 07:38:46 1428219526 -131072
2015-04-06 21:47:16 1428356836 131072
2015-04-08 10:35:32 1428489332 131072
2015-04-06 22:11:00 1428358260 -131072
2015-04-08 10:48:44 1428490124 131072
2015-04-10 00:21:02 1428625262 131072
2015-04-11 13:36:52 1428759412 131072
2015-04-13 02:07:13 1428890833 131072
2015-04-14 14:58:11 1429023491 131072
2015-04-13 02:33:39 1428892419 -131072
2015-04-14 15:10:39 1429024239 131072
2015-04-13 02:46:07 1428893167 -131072
2015-04-14 16:38:26 1429029506 131072
2015-04-16 05:06:49 1429160809 131072
2015-04-14 16:42:17 1429029737 -131072
2015-04-14 16:43:22 1429029802 -1
2015-04-16 05:34:02 1429162442 131072
2015-04-17 18:15:23 1429294523 131072
2015-04-19 06:41:50 1429425710 131072
2015-04-17 18:17:18 1429294638 -131072
2015-04-19 07:12:19 1429427539 131072
2015-04-20 19:47:56 1429559276 131072
2015-04-22 10:06:25 1429697185 131072
2015-04-23 22:49:17 1429829357 131072
2015-04-25 11:27:15 1429961235 131072
2015-04-26 23:52:48 1430092368 131072
2015-04-28 12:19:27 1430223567 131071
2015-04-30 01:06:46 1430356006 131072
2015-05-01 13:36:18 1430487378 131072
2015-05-03 02:20:38 1430619638 131072
2015-05-01 13:56:06 1430488566 -131072
2015-05-03 02:52:15 1430621535 131072
2015-05-01 14:27:43 1430490463 -131072
2015-05-03 03:08:48 1430622528 131072
2015-05-01 14:44:16 1430491456 -131072
2015-05-03 04:13:54 1430626434 131072
2015-05-04 17:33:03 1430760783 131072
2015-05-06 06:35:19 1430894119 131072
2015-05-07 19:34:21 1431027261 131071
2015-05-09 09:29:09 1431163749 131072
2015-05-10 21:58:14 1431295094 131072
2015-05-12 11:29:45 1431430185 131072
2015-05-14 00:45:53 1431564353 131072
2015-05-12 12:21:21 1431433281 -131072
2015-05-14 00:59:07 1431565147 131072
2015-05-12 12:34:35 1431434075 -131072
2015-05-14 01:01:31 1431565291 131072
2015-05-15 13:56:53 1431698213 131072
2015-05-17 02:24:37 1431829477 131072
2015-05-18 15:16:53 1431962213 131072
2015-05-20 04:03:34 1432094614 131072
2015-05-18 15:39:02 1431963542 -131072
2015-05-20 04:03:53 1432094633 131072
2015-05-21 17:14:37 1432228477 131072
2015-05-23 05:43:32 1432359812 131072
2015-05-24 18:47:55 1432493275 131072
2015-05-26 08:14:15 1432628055 131072
2015-05-27 21:31:59 1432762319 131072
2015-05-26 09:07:27 1432631247 -131072
2015-05-27 22:26:37 1432765597 131072
2015-05-29 11:00:11 1432897211 131072
2015-05-30 23:42:58 1433029378 131072
2015-06-01 12:14:53 1433160893 131072
2015-06-03 00:56:07 1433292967 131072
2015-06-01 12:31:35 1433161895 -131072
2015-06-01 12:32:16 1433161936 -1
2015-06-03 01:27:58 1433294878 131072
2015-06-04 14:27:46 1433428066 131071
2015-06-06 03:29:56 1433561396 131072
2015-06-07 16:04:56 1433693096 131072
2015-06-09 04:40:02 1433824802 131071
2015-06-10 17:26:14 1433957174 131072
2015-06-09 05:01:42 1433826102 -131072
2015-06-10 17:44:10 1433958250 131072
2015-06-09 05:19:38 1433827178 -131072
2015-06-10 18:28:33 1433960913 131072
2015-06-12 07:01:39 1434092499 131072
2015-06-10 18:37:07 1433961427 -131072
2015-06-12 07:16:39 1434093399 131072