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Date: Wed, 25 Apr 2012 11:05:27 +0300
From: Felipe Balbi <balbi@ti.com>
To: NeilBrown <neilb@suse.de>
Cc: Samuel Ortiz <sameo@linux.intel.com>, Felipe Balbi <balbi@ti.com>,
        Grazvydas Ignotas <notasas@gmail.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
        linux-omap@vger.kernel.org
Subject: Re: [PATCH 6/6] twl4030-usb: Don't report EVENT_ID when there is
 VBUS.
Message-ID: <20120425080526.GA3777@arwen.pp.htv.fi>
Reply-To: balbi@ti.com
References: <20120425072931.20124.56635.stgit@notabene.brown>
 <20120425073311.20124.58619.stgit@notabene.brown>
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Hi,

On Wed, Apr 25, 2012 at 05:33:11PM +1000, NeilBrown wrote:
> Some USB chargers tie the ID pin low via various resistors.
> So they can cause VBUS to be high and ID to be low.
>=20
> The 'A' end of an OTG cable never receives VBUS, it only ever generates i=
t.

this isn't entirely true. Have you considered Accessory Charger
Adapters ?

> So if we see VBUS and are not generating it, this must be a charger,
> not the A end of an OTG cable, so in that case, ignore the fact that
> ID is low.

wrong.

--=20
balbi

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