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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
hifive-unleashed-5.1
Markus Pargmann 2014-10-06 21:33:36 +02:00 committed by Mark Brown
parent f114040e3e
commit fe08be3ec8
1 changed files with 8 additions and 0 deletions
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8
drivers/regulator/anatop-regulator.c
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@ -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;
}