According to datasheet, the S2MPS13X and S2MPS14X should update write
buffer via setting WUDR bit to high after ctrl register is updated.
If not, ALARM interrupt of rtc-s5m doesn't happen first time when i use
tools/testing/selftests/timers/rtctest.c test program and hour format is
used to 12 hour mode in Odroid-XU3 board.
Signed-off-by: Joonyoung Shim <jy0922.s...@samsung.com>
Cc: <sta...@vger.kernel.org>
---
drivers/rtc/rtc-s5m.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c
index 8c70d78..03828bb 100644
--- a/drivers/rtc/rtc-s5m.c
+++ b/drivers/rtc/rtc-s5m.c
@@ -635,6 +635,18 @@ static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info)
case S2MPS13X:
data[0] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT);
ret = regmap_write(info->regmap, info->regs->ctrl, data[0]);
+ if (ret < 0)
+ break;
+
+ ret = regmap_update_bits(info->regmap,
+ info->regs->rtc_udr_update,
+ info->regs->rtc_udr_mask,
+ info->regs->rtc_udr_mask);
+ if (ret < 0)
+ break;
+
+ ret = s5m8767_wait_for_udr_update(info);
+
break;
default:
--
1.9.1
--
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