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Message-ID: <1304956895.3192.16.camel@odin> Date: Mon, 09 May 2011 17:01:35 +0100 From: Liam Girdwood <lrg@...nel.org> To: Mark Brown <broonie@...nsource.wolfsonmicro.com> Cc: linux-kernel@...r.kernel.org, patches@...nsource.wolfsonmicro.com Subject: Re: [PATCH] regulator: Support voltage offsets to compensate for drops in system On Sun, 2011-05-08 at 22:13 +0100, Mark Brown wrote: > Some systems, particularly physically large systems used for early > prototyping, may experience substantial voltage drops between the regulator > and the consumers as a result of long traces in the system. With these > systems voltages may need to be set higher than requested in order to > ensure reliable system operation. > > Allow systems to work around such hardware issues by allowing constraints > to supply an offset to be applied to any requested and reported voltages. > This is not ideal, especially since the voltage drop may be load dependant, > but is sufficient for most affected systems, it is not expected to be used > in production hardware. The offset is applied after all constraint > processing so constraints should be specified in terms of consumer values > not physically configured values. > > Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com> > --- Applied. Thanks Liam -- 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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