linux-kernel - Re: [PATCH v2 0/3] Introduce usb charger framework to deal with the usb gadget power negotation

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Date:	Fri, 14 Aug 2015 19:04:56 +0800
From:	Baolin Wang <baolin.wang@...aro.org>
To:	Li Jun <b47624@...escale.com>
Cc:	Felipe Balbi <balbi@...com>, Mark Brown <broonie@...nel.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Greg KH <gregkh@...uxfoundation.org>,
	Peter Chen <peter.chen@...escale.com>, sojka@...ica.cz,
	Alan Stern <stern@...land.harvard.edu>, r.baldyga@...sung.com,
	yoshihiro.shimoda.uh@...esas.com, linux-usb@...r.kernel.org,
	device-mainlining@...ts.linuxfoundation.org, sre@...nel.org,
	dbaryshkov@...il.com, dwmw2@...radead.org, sameo@...ux.intel.com,
	lee.jones@...aro.org, patches@...nsource.wolfsonmicro.com,
	linux-pm@...r.kernel.org
Subject: Re: [PATCH v2 0/3] Introduce usb charger framework to deal with the
 usb gadget power negotation

On 14 August 2015 at 16:55, Li Jun <b47624@...escale.com> wrote:
> Hi Baolin,
>
> On Fri, Aug 14, 2015 at 05:47:43PM +0800, Baolin Wang wrote:
>> Currently the Linux kernel does not provide any standard integration of this
>> feature that integrates the USB subsystem with the system power regulation
>> provided by PMICs meaning that either vendors must add this in their kernels
>> or USB gadget devices based on Linux (such as mobile phones) may not behave
>> as they should.
>>
>> Providing a standard framework for doing this in the kernel.
>>
>
> Why not add power supply class support into this?
>

Hi Jun,

We don't need the power supply class support into the usb charger,
just introduce the notify mechanism for power to set the current limit
when notifying some events from usb charger. Maybe I misunderstand
your meanings, please describe it detailedly. Thanks for your
comments.

> Li Jun
>



-- 
Baolin.wang
Best Regards
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