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Message-ID: <20110914232706.GB2953@opensource.wolfsonmicro.com> Date: Thu, 15 Sep 2011 00:27:07 +0100 From: Mark Brown <broonie@...nsource.wolfsonmicro.com> To: Marcus Folkesson <marcus.folkesson@...il.com> Cc: linux-kernel@...r.kernel.org Subject: Re: Regulator constraints and userspace consumer On Wed, Sep 14, 2011 at 08:54:47PM +0200, Marcus Folkesson wrote: > What is the most accurate way to set the voltage for these > limitations when the system starts up? There is apparently no check if > the default configuration is within limits as the regulator stays on > 1125mV. > When I'm looking in the userspace consumer (/sys/class/regulator/), > the "max_microvolts" and "min_microvolts" is set to 1000000 but the > "microvolts" is set to 1125000. Set apply_uV in hte constraints. The regulator framework won't touch the hardware unless explicitly told to. > * I want to change the output voltage from userspace on demand. What > is the most proper way to do this? If I have understand correctly, the > userspace consumer just exports interface for switching on/off the > regulator, is that correct? Why do you wish to do this? In general this is not a good sign. There is the virtual consumer but that is explicitly intended for test, it's not really supposed to be used in production. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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