From: Felipe Balbi <me@felipebalbi.com>
To: Ashwin Bihari <abihari@gmail.com>
Cc: "linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>
Subject: Re: MUSB OTG Interrupts
Date: Fri, 26 Sep 2008 20:54:28 +0300 [thread overview]
Message-ID: <20080926175427.GE9890@frodo> (raw)
In-Reply-To: <1f11a5490809260900q43d1524fn8811e9516663bc12@mail.gmail.com>
On Fri, Sep 26, 2008 at 12:00:17PM -0400, Ashwin Bihari wrote:
> Greetings,
>
> I've got a very curious problem with my OMAP3 based board. I'm using
> the OMAPZOOM kernel v2.6.27-rc3 and have enabled MUSB in OTG mode
> (both host and perihperhal). I've got the file-backed-storage gadget.
> If I plug the mini-B connector to the board, it gets the appropriate
> interrupt and recognizes that it needs to be operate in peripheral
> mode and goes about it's business. However, when I plug in the mini-A
> connector to the board, there is no interrupt and no activity. I can
> then unplug the mini-A connector, and plug in the mini-B connector to
> get the interrupts and activity again.
>
> If I boot the board up with the mini-A connector plugged in, it is
> properly found/recognized during driver installation and any devices
> attached are properly found and can be used. The IRQs at this time
> fire properly. I have a thumb drive connected to a high speed hub
> connected to the OMAP board, and the drive is found, I can mount it
> and do everything. Now, in this particular case, if I unplug the
> mini-A connector and plug either the mini-A or mini-B connector,
> nothing happens at all.
>
> Why am I only getting interrupts with the mini-B connector and not the
> mini-A connector? Additionally, why does everything fail after my
> second scenario above?
Id pin interrupt handling is not done yet on twl4030-usb, I'm planning
to finish that part when we finish fixing twl children registration.
If you have to do that and send a patch, that's ok. Just be sure to make
it on top of latest twl4030-usb.c which I moved to platform_driver.
--
balbi
prev parent reply other threads:[~2008-09-26 17:54 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-26 16:00 MUSB OTG Interrupts Ashwin Bihari
2008-09-26 17:54 ` Felipe Balbi [this message]
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