RTCS_OFFSET
rtcs = readl(priv->rtc_base + RTCS_OFFSET);
0, RTC_SYNCH_TIMEOUT, false, priv->rtc_base + RTCS_OFFSET);
0, RTC_SYNCH_TIMEOUT, false, priv->rtc_base + RTCS_OFFSET);
status = readl(priv->rtc_base + RTCS_OFFSET);
writel(status | RTCS_APIF, priv->rtc_base + RTCS_OFFSET);