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

From: Johannes Pointner
Date: Fri Nov 21 2014 - 10:11:15 EST


I tested version 4 of the patch series on a custom design and I saw
also the jumps as described by Richard. I played a little with the
sample delay and it got better but I couldn't completely remove the
jumps.
The other issue I had with version 3, the pen_ups during the busy
loop, is solved. I experienced some pen_up misses during the busy loop
if I used a too high sample delay, without the sample delay it was ok.

Thanks,
Hannes

2014-11-21 14:10 GMT+01:00 Richard Cochran <richardcochran@xxxxxxxxx>:
> On Fri, Nov 21, 2014 at 05:40:12PM +0530, Sekhar Nori wrote:
>> Not sure how to reproduce the jumping on pen-up.
>
> Does the cursor stay in exactly the same spot when you lift up the
> stylus? Then you don't have the issue.
>
> 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.
>
> Thanks,
> Richard
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