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From: Sebastian Andrzej Siewior <bigeasy-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
Subject: Re: [PATCH v4 3/6] mfd: ti_am335x_tscadc: Remove unwanted reg_se_cache
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Date: Mon, 24 Nov 2014 09:57:46 +0100
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To: Richard Cochran <richardcochran-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Sekhar Nori <nsekhar-l0cyMroinI0@public.gmane.org>
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List-Id: linux-input@vger.kernel.org

On 11/21/2014 02:10 PM, Richard Cochran wrote:

> On the BB white using the LCD4 cape and the shipped debian kernel, the
> cursor *does* jump away, but not as often or as far as on the custom
> design I was working with.

This sounds like the ADC is still sampling while the input data becomes
invalid. Usually there is a resistor on the wiper line and the
touchscreen manual says how much it should be at least. Could you
please check if this is properly installed?

> 
> Thanks,
> Richard

Sebastian