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rtc: k3: wait until the unlock field is not zero

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After writing the magic words to the KICK0 and KICK1 registers, we must
wait for a 1 in the unlock field of the general control register to
signify when the rtc device is in an unlocked state.

Signed-off-by: Bryan Brattlof <bb@ti.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20220816173312.23243-1-bb@ti.com
This commit is contained in:
Bryan Brattlof 2022-08-16 12:33:11 -05:00 committed by Alexandre Belloni
parent 07ae9278b4
commit f2c5671a64
1 changed files with 1 additions and 1 deletions
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drivers/rtc/rtc-ti-k3.c
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@ -190,7 +190,7 @@ static int k3rtc_unlock_rtc(struct ti_k3_rtc *priv)
/* Skip fence since we are going to check the unlock bit as fence */ /* Skip fence since we are going to check the unlock bit as fence */
ret = regmap_field_read_poll_timeout(priv->r_fields[K3RTC_UNLOCK], ret, ret = regmap_field_read_poll_timeout(priv->r_fields[K3RTC_UNLOCK], ret,
!ret, 2, priv->sync_timeout_us); ret, 2, priv->sync_timeout_us);
return ret; return ret;
} }