Re: [PATCH v4 3/6] mfd: ti_am335x_tscadc: Remove unwanted reg_se_cache save

From: Richard Cochran
Date: Mon Nov 24 2014 - 05:02:09 EST


On Mon, Nov 24, 2014 at 09:57:46AM +0100, Sebastian Andrzej Siewior wrote:
> 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?

Wiper line? This is a four wire device.

Thanks,
Richard
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