diff options
| -rw-r--r-- | src/soc/rockchip/common/rk808.c | 6 |
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); |