From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Welling Subject: AM335x touchscreen issues Date: Tue, 26 May 2015 13:11:57 -0500 Message-ID: <20150526181157.GA8009@deathray> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Sender: linux-iio-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: dmitry.torokhov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, vigneshr-l0cyMroinI0@public.gmane.org, bgriffis-l0cyMroinI0@public.gmane.org, jic23-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org, balbi-l0cyMroinI0@public.gmane.org, linux-input-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: GWilson-+8BKOH/0X5NWk0Htik3J/w@public.gmane.org, linux-iio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-input@vger.kernel.org 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. 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? Regards, Michael