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-rw-r--r--src/soc/rockchip/common/rk808.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/soc/rockchip/common/rk808.c b/src/soc/rockchip/common/rk808.c
index dc6b2ea23f..a68b838f48 100644
--- a/src/soc/rockchip/common/rk808.c
+++ b/src/soc/rockchip/common/rk808.c
@@ -181,6 +181,12 @@ int rtc_get(struct rtc_time *time)
rk808_clrsetbits(RTC_CTRL, RTC_CTRL_GET_TIME, 0);
rk808_clrsetbits(RTC_CTRL, 0, RTC_CTRL_GET_TIME | RTC_CTRL_RTC_READSEL);
+ /*
+ * After we set the GET_TIME bit, the rtc time can't be read
+ * immediately. So we should wait up to 31.25 us.
+ */
+ udelay(32);
+
ret |= rk808_read(RTC_SECOND, &value);
time->sec = bcd2bin(value & 0x7f);