Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753568AbcDRLNs (ORCPT ); Mon, 18 Apr 2016 07:13:48 -0400 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:36177 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753254AbcDRLNo (ORCPT ); Mon, 18 Apr 2016 07:13:44 -0400 Date: Mon, 18 Apr 2016 13:13:42 +0200 From: Pavel Machek To: Felipe Balbi Cc: Baolin Wang , Greg KH , Sebastian Reichel , Dmitry Eremin-Solenikov , David Woodhouse , Peter Chen , Alan Stern , Yoshihiro Shimoda , Lee Jones , Mark Brown , Charles Keepax , patches@opensource.wolfsonmicro.com, Linux PM list , USB , device-mainlining@lists.linuxfoundation.org, LKML Subject: Re: [PATCH v7 1/4] gadget: Introduce the usb charger framework Message-ID: <20160418111342.GA30694@amd> References: <87h9foqnur.fsf@intel.com> <87poubgnbh.fsf@intel.com> <20160322113012.GC26924@xo-6d-61-c0.localdomain> <87fuujgwsm.fsf@intel.com> <20160418102316.GA27936@amd> <877ffvgqe9.fsf@intel.com> <20160418103945.GA29123@amd> <87y48bfaye.fsf@intel.com> <87vb3ffap6.fsf@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87vb3ffap6.fsf@intel.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1065 Lines: 27 On Mon 2016-04-18 13:55:17, Felipe Balbi wrote: > > Hi, > > Felipe Balbi 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