Date: Mon, 15 Dec 2014 11:39:54 +0000
From: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
To: NeilBrown <neilb@suse.de>
Cc: Grant Likely <grant.likely@linaro.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Mark Rutland <mark.rutland@arm.com>, Jiri Slaby <jslaby@suse.cz>,
        NeilBrown <neil@brown.name>, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/3] TTY/slave: add driver for w2sg0004 GPS
Message-ID: <20141215113954.21e2ea61@lxorguk.ukuu.org.uk>
In-Reply-To: <20141212160607.361d20db@notabene.brown>
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	<20141211215944.4127.57146.stgit@notabene.brown>
	<20141211231100.05782a30@lxorguk.ukuu.org.uk>
	<20141212160607.361d20db@notabene.brown>
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Sender: linux-kernel-owner@vger.kernel.org

> > Am I missing some w2sg004 specific bits here ?
> 
> There is particular behaviour that the device is both turned on and turned
> off by toggling a GPIO, and the only way to detect which state it is in is
> to watch the RX uart line (by reconfiguring it as a GPIO).

Ok so it is somewhat different to things like the Broadcom and the more
usual 'wait for idle, drop power' setup.


Alan
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