diff options
| author | Markus Pargmann <mpa@pengutronix.de> | 2014-10-06 21:33:36 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-01-08 10:27:45 -0800 |
| commit | 41fe43101ff9263551c252207927a81f10ea4679 (patch) | |
| tree | 50b2c44bc886d260676f587a73163c98e8498655 | |
| parent | 6baaba8f47e34451f7859eab4814e1498e75f3bf (diff) | |
| download | linux-41fe43101ff9263551c252207927a81f10ea4679.tar.gz | |
regulator: anatop: Set default voltage selector for vddpu
commit fe08be3ec8672ed92b3ed1b85810df9fa0f98931 upstream.
The code reads the default voltage selector from its register. If the
bootloader disables the regulator, the default voltage selector will be
0 which results in faulty behaviour of this regulator driver.
This patch sets a default voltage selector for vddpu if it is not set in
the register.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/regulator/anatop-regulator.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/regulator/anatop-regulator.c b/drivers/regulator/anatop-regulator.c index 4f730af70e7c8b..30e8d7ad581343 100644 --- a/drivers/regulator/anatop-regulator.c +++ b/drivers/regulator/anatop-regulator.c @@ -283,6 +283,14 @@ static int anatop_regulator_probe(struct platform_device *pdev) sreg->sel = 0; sreg->bypass = true; } + + /* + * In case vddpu was disabled by the bootloader, we need to set + * a sane default until imx6-cpufreq was probed and changes the + * voltage to the correct value. In this case we set 1.25V. + */ + if (!sreg->sel && !strcmp(sreg->name, "vddpu")) + sreg->sel = 22; } else { rdesc->ops = &anatop_rops; } |