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rtc: k3: wait until the unlock field is not zero
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
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@ -190,7 +190,7 @@ static int k3rtc_unlock_rtc(struct ti_k3_rtc *priv)
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/* Skip fence since we are going to check the unlock bit as fence */
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ret = regmap_field_read_poll_timeout(priv->r_fields[K3RTC_UNLOCK], ret,
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!ret, 2, priv->sync_timeout_us);
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ret, 2, priv->sync_timeout_us);
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return ret;
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}
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