clock source switch reason:
1, CLOCKSOURCE_SWITCH_ABMNORMAL,
2, CLOCKSOURCE_SWITCH_S1CHANGE,
3, CLOCKSOURCE_SWITCH_ALMCHANGE,
4, CLOCKSOURCE_SWITCH_PRICHANGE,
5, CLOCKSOURCE_SWITCH_OUTOFLOCK,
6, CLOCKSOURCE_SWITCH_DEGRADE,
7, LOCKSOURCE_SWITCH_PLLFAIL,
8, CLOCKSOURCE_SWITCH_PRELOCKFAIL,
9, CLOCKSOURCE_SWITCH_HOLDOVESTOP,
10, CLOCKSOURCE_SWITCH_LOADCFG,
11, CLOCKSOURCE_SWITCH_ALMRESTORE,
12, CLOCKSOURCE_SWITCH_PROTECT,
13, CLOCKSOURCE_SWITCH_PROTECT_CANCEL,
14, CLOCKSOURCE_SWITCH_BACKUP_PLLFAIL, |