RTC_ALRM
rtc_time64_to_tm(readl(xrtcdev->reg_base + RTC_ALRM), &alrm->time);
writel((u32)alarm_time, (xrtcdev->reg_base + RTC_ALRM));
alarm_time = readl(xrtcdev->reg_base + RTC_ALRM);