From patchwork Fri Jan 17 12:28:38 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Lothar_Wa=C3=9Fmann?= X-Patchwork-Id: 3503831 Return-Path: X-Original-To: patchwork-linux-input@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 78E089F169 for ; Fri, 17 Jan 2014 12:30:53 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 73F8D2015D for ; Fri, 17 Jan 2014 12:30:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7F7D720158 for ; Fri, 17 Jan 2014 12:30:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752697AbaAQMaa (ORCPT ); Fri, 17 Jan 2014 07:30:30 -0500 Received: from mail.karo-electronics.de ([81.173.242.67]:52739 "EHLO mail.karo-electronics.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752251AbaAQM3X (ORCPT ); Fri, 17 Jan 2014 07:29:23 -0500 From: =?UTF-8?q?Lothar=20Wa=C3=9Fmann?= To: Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Rob Landley , Dmitry Torokhov , Thierry Reding , Grant Likely , Jonathan Cameron , Shawn Guo , Silvio F , Guennadi Liakhovetski , Jingoo Han , Fugang Duan , Sachin Kamat , devicetree@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org Cc: =?UTF-8?q?Lothar=20Wa=C3=9Fmann?= Subject: [PATCHv3 4/4] Input: edt-ft5x06 adjust reset delays according to datasheet Date: Fri, 17 Jan 2014 13:28:38 +0100 Message-Id: <1389961718-8130-5-git-send-email-LW@KARO-electronics.de> X-Mailer: git-send-email 1.7.2.5 In-Reply-To: <1389961718-8130-1-git-send-email-LW@KARO-electronics.de> References: <1389961718-8130-1-git-send-email-LW@KARO-electronics.de> MIME-Version: 1.0 Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Spam-Status: No, score=-7.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The FT5x06 datasheet specifies a minimum reset width of 5ms and a delay between deassertion of reset and start of reporting of 300ms. Adjust the delays to conform to the datasheet. With the original delays I sometimes experienced communication timeouts when initializing the controller. Signed-off-by: Lothar Waßmann --- drivers/input/touchscreen/edt-ft5x06.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c index ec6b3e5..bd42845 100644 --- a/drivers/input/touchscreen/edt-ft5x06.c +++ b/drivers/input/touchscreen/edt-ft5x06.c @@ -653,9 +653,9 @@ static int edt_ft5x06_ts_reset(struct i2c_client *client, return error; } - mdelay(50); + mdelay(5); gpio_set_value(tsdata->reset_pin, 1); - mdelay(100); + msleep(300); } return 0;