Re: AM335x touchscreen issues

Felipe Balbi
2015-05-26T18:37:13Z

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Hi,

On Tue, May 26, 2015 at 01:11:57PM -0500, Michael Welling wrote:
> Greetings,
>
> I have been porting Linux to a new AM3554 based SoM and have found issues
> with the touchscreen reporting touch releases repeatedly to userspace
> without actually touching the screen when running ts_calibrate, ts_test
> or other graphical touchscreen applications.
>
> This started happening after updating pulling recent changes.

Can you bisect and find the offending commit ? Which recent changes are
you talking about ?

> It has also been confirmed to be happening on the beagle bone black:
> http://www.spinics.net/lists/linux-iio/msg18580.html
>
> If you look further into this thread you will see a workaround patch that
> I came up with:
> http://www.spinics.net/lists/linux-iio/msg18583.html
>
> Though this fix stops the reported events in userspace, interrupts are
> still occuring repeatedly.
>
> Does anyone have any suggestions beyond what I have done to remedy this
> issue?

yeah, it sounds similar to what Franklin has been working on.

Franklin, any comments ?

--
balbi

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