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From: Dmitry Lifshitz <lifshitz@compulab.co.il>
To: Felipe Balbi <balbi@ti.com>, Roger Quadros <rogerq@ti.com>
Cc: Kishon Vijay Abraham I <kishon@ti.com>,
	bcousson@baylibre.com, tony@atomide.com, rob.herring@calxeda.com,
	pawel.moll@arm.com, mark.rutland@arm.com, swarren@wwwdotorg.org,
	ijc+devicetree@hellion.org.uk, linux@arm.linux.org.uk,
	linux-omap@vger.kernel.org, devicetree@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	George Cherian <george.cherian@ti.com>
Subject: Re: [PATCH 2/2] ARM: dts: omap5: Add dr_mode for dwc3
Date: Mon, 08 Sep 2014 14:34:33 +0300	[thread overview]
Message-ID: <540D9449.3090008@compulab.co.il> (raw)
In-Reply-To: <20140416161619.GH28035@saruman.home>

Hi Felipe, Roger

On 04/16/2014 07:16 PM, Felipe Balbi wrote:
> On Fri, Oct 11, 2013 at 05:46:12PM +0300, Roger Quadros wrote:
>> Hi,
>>
>> On 10/10/2013 01:49 PM, Kishon Vijay Abraham I wrote:
>>> From: George Cherian <george.cherian@ti.com>
>>>
>>> Added dr_mode property in dwc3 and set its default mode to device.
>>
>> If there is a specific reason why this is not set to "otg", we need
>> to explain it here.
>>
>> AFAIK the port is meant to be used as OTG port.
>
> we still don't have the workaround for dual role ports, I've been
> working on it but still need to retest and make sure it's working fine
> before merging upstream.
>


Does the OTG port suppose to work with OMAP5? I mean role switching 
mechanism?

I'm testing kernel v3.16 with OMAP5 based board (CM-T54).

If I set CONFIG_USB_DWC3_DUAL_ROLE, than nothing is going on when I plug 
some device/host cable into micro USB3.0 port (VBUS/ID detection with 
extcon events works fine).

CONFIG_USB_DWC3_HOST/CONFIG_USB_DWC3_GADGET bring port to appropriate 
mode and it works.

What is the purpose of setting dr_mode = "peripheral" in omap5.dtsi, 
since it is overridden by config options in dwc3_probe()?

Thank you in advance for the assistance,

Dmitry


  parent reply	other threads:[~2014-09-08 11:35 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-10 10:49 [PATCH 1/2] ARM: dts: omap5-uevm: remove always_on, boot_on from smps10_out1 Kishon Vijay Abraham I
2013-10-10 10:49 ` [PATCH 2/2] ARM: dts: omap5: Add dr_mode for dwc3 Kishon Vijay Abraham I
2013-10-11 14:46   ` Roger Quadros
2013-10-15  5:49     ` [PATCH v2 " Kishon Vijay Abraham I
2013-10-16 13:17       ` Kishon Vijay Abraham I
2013-10-17 20:08         ` Benoit Cousson
2013-10-21 10:03           ` Kishon Vijay Abraham I
2014-04-16 16:16     ` [PATCH " Felipe Balbi
2014-04-16 16:22       ` Felipe Balbi
2014-09-08 11:34       ` Dmitry Lifshitz [this message]
2014-09-08 11:39         ` Roger Quadros
2014-09-08 12:32           ` Dmitry Lifshitz
2014-09-08 13:25             ` Felipe Balbi
2014-09-08 13:24         ` Felipe Balbi
2014-09-10 12:03           ` Dmitry Lifshitz
2014-09-11 17:14             ` Felipe Balbi
2013-10-10 14:19 ` [PATCH 1/2] ARM: dts: omap5-uevm: remove always_on, boot_on from smps10_out1 Nishanth Menon
2013-10-11  6:13   ` Kishon Vijay Abraham I
2013-10-11  6:30     ` Nishanth Menon
2013-10-11  6:53       ` Kishon Vijay Abraham I
2013-10-11  6:54         ` Kishon Vijay Abraham I
2013-10-11  7:27           ` Nishanth Menon
2013-10-16 13:17 ` Kishon Vijay Abraham I
2013-10-16 13:27   ` Nishanth Menon
2013-10-17 20:09     ` Benoit Cousson
2013-10-21 10:03       ` Kishon Vijay Abraham I

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