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rtc: m41t62: fix wrong register use for set/reset ST bit

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Fix wrong register use when set/reset ST bit.
ST bit is in register M41T62_REG_SEC not in M41T62_REG_ALARM_HOUR.

I have not actually tested this. But this seemed buggy from inspection.

Fixes: 9bbe210512 ("rtc: m41t62: add oscillator fail bit reset support")
Signed-off-by: Max Yang <max.yang@deltaww.com>
This commit is contained in:
Max Yang 2021-05-10 05:23:37 +00:00 committed by Tom Rini
parent bc599042d4
commit 92cf458f8a
1 changed files with 2 additions and 2 deletions
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4
drivers/rtc/m41t62.c
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@ -213,13 +213,13 @@ static int m41t62_rtc_restart_osc(struct udevice *dev)
/* 1. Set stop bit */
val |= M41T62_SEC_ST;
ret = dm_i2c_write(dev, M41T62_REG_ALARM_HOUR, &val, sizeof(val));
ret = dm_i2c_write(dev, M41T62_REG_SEC, &val, sizeof(val));
if (ret)
return ret;
/* 2. Clear stop bit */
val &= ~M41T62_SEC_ST;
ret = dm_i2c_write(dev, M41T62_REG_ALARM_HOUR, &val, sizeof(val));
ret = dm_i2c_write(dev, M41T62_REG_SEC, &val, sizeof(val));
if (ret)
return ret;