The DA9063AD doesn't support alarms on any seconds and its granularity is
the minute. Set uie_unsupported in that case.

Reported-by: Wolfram Sang <[email protected]>
Reported-by: Geert Uytterhoeven <[email protected]>
Reviewed-by: Wolfram Sang <[email protected]>
Tested-by: Wolfram Sang <[email protected]>
Acked-by: Steve Twiss <[email protected]>
Signed-off-by: Alexandre Belloni <[email protected]>
---
 drivers/rtc/rtc-da9063.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/rtc/rtc-da9063.c b/drivers/rtc/rtc-da9063.c
index 1b792bcea3c7..15908d51b1cb 100644
--- a/drivers/rtc/rtc-da9063.c
+++ b/drivers/rtc/rtc-da9063.c
@@ -475,6 +475,13 @@ static int da9063_rtc_probe(struct platform_device *pdev)
        da9063_data_to_tm(data, &rtc->alarm_time, rtc);
        rtc->rtc_sync = false;
 
+       /*
+        * TODO: some models have alarms on a minute boundary but still support
+        * real hardware interrupts. Add this once the core supports it.
+        */
+       if (config->rtc_data_start != RTC_SEC)
+               rtc->rtc_dev->uie_unsupported = 1;
+
        irq_alarm = platform_get_irq_byname(pdev, "ALARM");
        ret = devm_request_threaded_irq(&pdev->dev, irq_alarm, NULL,
                                        da9063_alarm_event,
-- 
2.20.1

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