linux-kernel - Re: [PATCH v7 1/4] gadget: Introduce the usb charger framework

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Message-ID: <20160418111342.GA30694@amd>
Date:	Mon, 18 Apr 2016 13:13:42 +0200
From:	Pavel Machek <pavel@....cz>
To:	Felipe Balbi <balbi@...nel.org>
Cc:	Baolin Wang <baolin.wang@...aro.org>,
	Greg KH <gregkh@...uxfoundation.org>,
	Sebastian Reichel <sre@...nel.org>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Peter Chen <peter.chen@...escale.com>,
	Alan Stern <stern@...land.harvard.edu>,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
	Lee Jones <lee.jones@...aro.org>,
	Mark Brown <broonie@...nel.org>,
	Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>,
	patches@...nsource.wolfsonmicro.com,
	Linux PM list <linux-pm@...r.kernel.org>,
	USB <linux-usb@...r.kernel.org>,
	device-mainlining@...ts.linuxfoundation.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v7 1/4] gadget: Introduce the usb charger framework

On Mon 2016-04-18 13:55:17, Felipe Balbi wrote:
> 
> Hi,
> 
> Felipe Balbi <balbi@...nel.org> writes:
> >> But cellphone user knows what he connected his charger to, and that's
> >> why it is useful to be able to lower the current. Even when you said
> >> "less is just stupid" I demonstrated it is not, at least in case when
> 
> and btw, you haven't demonstrated anything. You merely stated that it
> isn't without references or numbers, or any source of trustworthy
> information. I'm not really into 'believing'.

You are not really into reading, either, it seems. Or into the
electronics. Or into physics.

You seem to understand that charging li-ion from li-ion produces too
much heat. (And yes, it does, DC-DC convertors are not 100%
effective). Converting energy into heat is not a good idea.

If you need numbers or references to understand basic physics, you'll
need to google it yourself, I'm afraid. 

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html