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rtc: pcf2127: set RTC_FEATURE_ALARM_RES_2S

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The PCF2127 doesn't support UIE because setting an alarm to fire every
second confuses the chip and the fastest we can go is an alarm every 2
seconds.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20220309162301.61679-11-alexandre.belloni@bootlin.com
This commit is contained in:
Alexandre Belloni 2022-03-09 17:22:42 +01:00
parent 689fafd5b5
commit bda1027358
1 changed files with 1 additions and 0 deletions
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drivers/rtc/rtc-pcf2127.c
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@ -656,6 +656,7 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap,
pcf2127->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; pcf2127->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
pcf2127->rtc->range_max = RTC_TIMESTAMP_END_2099; pcf2127->rtc->range_max = RTC_TIMESTAMP_END_2099;
pcf2127->rtc->set_start_time = true; /* Sets actual start to 1970 */ pcf2127->rtc->set_start_time = true; /* Sets actual start to 1970 */
set_bit(RTC_FEATURE_ALARM_RES_2S, pcf2127->rtc->features);
clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, pcf2127->rtc->features); clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, pcf2127->rtc->features);
clear_bit(RTC_FEATURE_ALARM, pcf2127->rtc->features); clear_bit(RTC_FEATURE_ALARM, pcf2127->rtc->features);