Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753241AbaKDMhc (ORCPT ); Tue, 4 Nov 2014 07:37:32 -0500 Received: from www.linutronix.de ([62.245.132.108]:59534 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750866AbaKDMh3 (ORCPT ); Tue, 4 Nov 2014 07:37:29 -0500 Message-ID: <5458C87F.80409@linutronix.de> Date: Tue, 04 Nov 2014 13:37:19 +0100 From: Sebastian Andrzej Siewior User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.2.0 MIME-Version: 1.0 To: Vignesh R , "Griffis, Brad" , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Benoit Cousson , Tony Lindgren , Russell King , Jonathan Cameron , Dmitry Torokhov CC: Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald , Samuel Ortiz , Lee Jones , "Balbi, Felipe" , Jan Kardell , Paul Gortmaker , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-omap@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-iio@vger.kernel.org" , "linux-input@vger.kernel.org" Subject: Re: [PATCH 0/4] Touchscreen performance related fixes References: <1414408111-2631-1-git-send-email-vigneshr@ti.com> <544E821D.5040004@linutronix.de> <912A29987EAE174BA6CF187D7CDFA9CE26F46B2B@DLEE08.ent.ti.com> <54577258.9080508@linutronix.de> <5458BC0B.1040803@ti.com> In-Reply-To: <5458BC0B.1040803@ti.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/04/2014 12:44 PM, Vignesh R wrote: > I ran following commands > $ evtest /dev/input/touchscreen0 & > (with heavy item on touchscreen) > and > $ cat /sys/bus/iio/devices/iio\:device0/scan_elements/in_voltage4_en > (in a busy loop) > I tried above experiment on my board but I didn't hit any problem even > after running for close to 30 minutes. I was unable to reproduce failure Just to make sure: You had the touchscreen and iio command running in parallel and you saw evtest output while there was iio operation? > The problem may be in configuring correct charge-delay value. Please run: > $ ts_test > /dev/null > and let me know if pen events are being detected properly. Well I get the touch events but not while busy loop on iio interface is running (I get maybe one event every 5 seconds or so). After all, it is the same HW you have. Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/