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authorMarkus Pargmann <mpa@pengutronix.de>2014-10-06 21:33:36 +0200
committerMark Brown <broonie@kernel.org>2014-10-20 12:23:41 +0100
commitfe08be3ec8672ed92b3ed1b85810df9fa0f98931 (patch)
tree314c09236a44837ec0561ec73456e653c72611fd /drivers/regulator/anatop-regulator.c
parentf114040e3ea6e07372334ade75d1ee0775c355e1 (diff)
downloadop-kernel-dev-fe08be3ec8672ed92b3ed1b85810df9fa0f98931.zip
op-kernel-dev-fe08be3ec8672ed92b3ed1b85810df9fa0f98931.tar.gz
regulator: anatop: Set default voltage selector for vddpu
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> Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/regulator/anatop-regulator.c')
-rw-r--r--drivers/regulator/anatop-regulator.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/regulator/anatop-regulator.c b/drivers/regulator/anatop-regulator.c
index 4f730af..30e8d7a 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;
}
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