From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Brownell <david-b@pacbell.net>
Subject: Re: touchscreen on omap5912
Date: Fri, 22 Dec 2006 10:29:40 -0800
Message-ID: <200612221029.41005.david-b@pacbell.net>
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> I've no idea how I can connect the touchscreen signals(they are x+, x-, y+
> and y-) to omap5912.
> Is ADS7846 needed?
> Or should I connect them directly to CPU?

If you look at schematics for a board that uses a touchscreen, you'll
notice that x+/x- and y+/y- are differential signals, so you'll need
digital-to-analog conversion.  OMAP doesn't integrate such stuff.

You don't need an ads7846, but you'll need _some_ chip.  TSC2101 is
another option (from TI, and there are dozens of others.