1<<RTC_FEATURE_ALARM
1<<RTC_FEATURE_ALARM_RES_MINUTE
1<<RTC_FEATURE_NEED_WEEK_DAY
1<<RTC_FEATURE_ALARM_RES_2S
1<<RTC_FEATURE_UPDATE_INTERRUPT
1<<RTC_FEATURE_CORRECTION
1<<RTC_FEATURE_BACKUP_SWITCH_MODE
1<<RTC_FEATURE_ALARM_WAKEUP_ONLY
/* RTC_FEATURE_CNT - non-UAPI */