linux-kernel - Re: [PATCH 2/2] regulator: Propagate uA

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Message-ID: <20110329082848.GA10447@n2100.arm.linux.org.uk>
Date:	Tue, 29 Mar 2011 09:28:48 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	David Collins <collinsd@...eaurora.org>,
	linux-arm-msm@...r.kernel.org, linux-arm-msm-owner@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Liam Girdwood <lrg@...mlogic.co.uk>
Subject: Re: [PATCH 2/2] regulator: Propagate uA_load requirements up
	supply chain

On Tue, Mar 29, 2011 at 08:53:11AM +0100, Mark Brown wrote:
> On Mon, Mar 28, 2011 at 07:14:15PM +0100, Russell King - ARM Linux wrote:
> 
> > That's not true.  Firstly, *all* regulators are not 100% efficient.  They
> > lose *power* in the form of heat.  So power into the regulator will always
> > be more than power out.
> 
> That's pretty much what I said, yes.

No, you said the power will map through but the current will not.  I'm
saying that the power will *not* map through either.
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