Currently setting an alarm clears the SQWE bit which means that the clock output is disabled no matter its previous state.
Signed-off-by: Gary Bisson <gary.bis...@boundarydevices.com> --- drivers/rtc/rtc-m41t80.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c index 58698d21c2c3..93684ab293f2 100644 --- a/drivers/rtc/rtc-m41t80.c +++ b/drivers/rtc/rtc-m41t80.c @@ -273,6 +273,9 @@ static int m41t80_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) return err; } + /* Keep SQWE bit value */ + alarmvals[0] |= (ret & M41T80_ALMON_SQWE); + ret = i2c_smbus_read_byte_data(client, M41T80_REG_FLAGS); if (ret < 0) return ret; -- 2.11.0