From: "Ming Lei" <tom.leiming-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Fredrik Johansson <frejo242-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: linux-embedded-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: USB, Host and Device on the same machine
Date: Fri, 24 Oct 2008 16:01:38 +0800 [thread overview]
Message-ID: <d82e647a0810240101l49a4fe39la5e7976f3df743e0@mail.gmail.com> (raw)
In-Reply-To: <53e45cc30810240018w1c3c73c2nf9a9b606e0e7dea4-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008/10/24 Fredrik Johansson <frejo242-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:
> Hello
>
> I am working on an embedded machine that has two USB controllers, one
> is a OTG and the other is a pure host.
>
> I have succesfully used g_serial driver on the OTG controller in
> device mode and talked to my pc using the cdc-acm driver.
> With the g_serial unloaded I have also enabled the ehci-hcd and
> cdc-acm drivers and connected the host port to another serial device.
>
> The problem I have now is that I want to be able to have my embedded
> machine work as a device on the OTG port and a host on the host port,
> but if I load the ehci-hcd driver with g_serial already loaded it
> screws everything up since ehci-hcd driver attaches to both the OTG
> and the host controller, how can i prevent it from using the OTG
> controller?
It is a platform dependent problem. what is your platform ?( musb? )
which buses do the otg controller and ehci controller attache to?
>
> Best regards
> Fredrik Johansson
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--
Lei Ming
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next prev parent reply other threads:[~2008-10-24 8:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-24 7:18 USB, Host and Device on the same machine Fredrik Johansson
[not found] ` <53e45cc30810240018w1c3c73c2nf9a9b606e0e7dea4-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-10-24 8:01 ` Ming Lei [this message]
2008-10-27 16:44 ` David Brownell
2008-10-28 7:42 ` Fredrik Johansson
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