This is a note to let you know that I've just added the patch titled
regulator: ltc3589: fix broken voltage transitions
to the 3.17-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
regulator-ltc3589-fix-broken-voltage-transitions.patch
and it can be found in the queue-3.17 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c5bb725ac2d1a13e9e766bf9a16bac986ade17cd Mon Sep 17 00:00:00 2001
From: Steffen Trumtrar <s.trumtrar@xxxxxxxxxxxxxx>
Date: Thu, 25 Sep 2014 16:39:11 +0200
Subject: regulator: ltc3589: fix broken voltage transitions
From: Steffen Trumtrar <s.trumtrar@xxxxxxxxxxxxxx>
commit c5bb725ac2d1a13e9e766bf9a16bac986ade17cd upstream.
VCCR is used as a trigger to start voltage transitions, so
we need to mark it volatile in order to make sure it gets
written to hardware every time we set a new voltage.
Fixes regulator voltage being stuck at the first voltage
set after driver load.
[lst: reworded commit message]
Signed-off-by: Steffen Trumtrar <s.trumtrar@xxxxxxxxxxxxxx>
Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/regulator/ltc3589.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/regulator/ltc3589.c
+++ b/drivers/regulator/ltc3589.c
@@ -372,6 +372,7 @@ static bool ltc3589_volatile_reg(struct
switch (reg) {
case LTC3589_IRQSTAT:
case LTC3589_PGSTAT:
+ case LTC3589_VCCR:
return true;
}
return false;
Patches currently in stable-queue which might be from s.trumtrar@xxxxxxxxxxxxxx are
queue-3.17/regulator-ltc3589-fix-broken-voltage-transitions.patch
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