| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.17 035/146] regulator: ltc3589: fix broken voltage transitions | Date | Tue, 28 Oct 2014 11:32:57 +0800 |
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3.17-stable review patch. If anyone has any objections, please let me know.
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From: Steffen Trumtrar <s.trumtrar@pengutronix.de>
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@pengutronix.de> Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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;
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