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

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Message-ID: <87ega3f3cl.fsf@intel.com>
Date:	Mon, 18 Apr 2016 16:34:02 +0300
From:	Felipe Balbi <balbi@...nel.org>
To:	Pavel Machek <pavel@....cz>
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


Hi,

Pavel Machek <pavel@....cz> writes:
>> Pavel Machek <pavel@....cz> writes:
>> > 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. 
>> 
>> still doesn't change the fact that you haven't demonstrated anything. If
>> you can't be helpful and/or constructive, you may also go away and use
>> whatever unsafe setup you want to use.
>
> So you still claim that it is "stupid" to charge at anything lower
> than maximum allowed current?
>
> Even after I described the example with device running off power bank
> on a train? Would you explain your reasoning?

you still haven't produced evidence of your claim. Claiming without
evidence has virtually no meaning. Anyway, I'll just google a bit later
seen as if you're just unwilling to produce evidence of your claims.

-- 
balbi

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