linux-kernel - Re: [PATCH v7 4/5] usb: dwc3: omap: Pass VBUS and ID events transparently

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Date:	Tue, 10 May 2016 13:13:10 +0300
From:	Roger Quadros <rogerq@...com>
To:	Felipe Balbi <balbi@...nel.org>
CC:	<tony@...mide.com>, <Joao.Pinto@...opsys.com>,
	<sergei.shtylyov@...entembedded.com>, <peter.chen@...escale.com>,
	<jun.li@...escale.com>, <grygorii.strashko@...com>,
	<yoshihiro.shimoda.uh@...esas.com>, <nsekhar@...com>,
	<b-liu@...com>, <linux-usb@...r.kernel.org>,
	<linux-omap@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v7 4/5] usb: dwc3: omap: Pass VBUS and ID events
 transparently

On 10/05/16 13:05, Felipe Balbi wrote:
> 
> Hi,
> 
> Roger Quadros <rogerq@...com> writes:
>> On 10/05/16 12:55, Felipe Balbi wrote:
>>>
>>> Hi,
>>>
>>> Roger Quadros <rogerq@...com> writes:
>>>> Don't make any decisions regarding VBUS session based on ID
>>>> status. That is best left to the OTG core.
>>>>
>>>> Pass ID and VBUS events independent of each other so that OTG
>>>> core knows exactly what to do.
>>>>
>>>> This makes dual-role with extcon work with OTG irq on OMAP platforms.
>>>>
>>>> Signed-off-by: Roger Quadros <rogerq@...com>
>>>
>>> I have a feeling this will regress OMAP5432 uEVM. Did you test with that
>>> board ?
>>>
>>
>> Yes. Any specific test case you would like me to test?
>> For now I'm just doing enumeration with g_zero.
> 
> IIRC OMAP5 uEVM didn't have separate VBUS and ID GPIOs. How are you
> handling that case ?
> 
It comes from the PMIC, extcon-palmas.c.

cheers,
-roger