diff options
Diffstat (limited to 'drivers/rtc/m41t62.c')
| -rw-r--r-- | drivers/rtc/m41t62.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/rtc/m41t62.c b/drivers/rtc/m41t62.c index 2ee7e00b02..6161b76712 100644 --- a/drivers/rtc/m41t62.c +++ b/drivers/rtc/m41t62.c @@ -155,6 +155,15 @@ static int m41t62_rtc_reset(struct udevice *dev) return ret; } +/* + * Make sure HT bit is cleared. This bit is set on entering battery backup + * mode, so do this before the first read access. + */ +static int m41t62_rtc_probe(struct udevice *dev) +{ + return m41t62_rtc_reset(dev); +} + static const struct rtc_ops m41t62_rtc_ops = { .get = m41t62_rtc_get, .set = m41t62_rtc_set, @@ -163,6 +172,7 @@ static const struct rtc_ops m41t62_rtc_ops = { static const struct udevice_id m41t62_rtc_ids[] = { { .compatible = "st,m41t62" }, + { .compatible = "st,m41t82" }, { .compatible = "microcrystal,rv4162" }, { } }; @@ -172,6 +182,7 @@ U_BOOT_DRIVER(rtc_m41t62) = { .id = UCLASS_RTC, .of_match = m41t62_rtc_ids, .ops = &m41t62_rtc_ops, + .probe = &m41t62_rtc_probe, }; #else /* NON DM RTC code - will be removed */ |