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From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Subject: Re: WL1273 FM Radio driver...
Date: Thu, 10 Feb 2011 12:28:42 +0000
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On Thu, Feb 10, 2011 at 02:10:40PM +0200, Matti J. Aaltonen wrote:

> But I got the following quick comment from a local BT expert: "No you
> cannot change line discipline if bt is already in use. And it's not uart
> interface but hci interface. uart can be replaced with sdio for example
> and you still have the same hci interface."

Yes, it only works when the device is idle - if your device needs to be
shared with other bits of the system while doing this you'd need to
present a virtual interface up the way.