From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752258Ab2DBT7D (ORCPT ); Mon, 2 Apr 2012 15:59:03 -0400 Received: from avon.wwwdotorg.org ([70.85.31.133]:36556 "EHLO avon.wwwdotorg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751804Ab2DBT7A (ORCPT ); Mon, 2 Apr 2012 15:59:00 -0400 Message-ID: <4F7A0500.3060305@wwwdotorg.org> Date: Mon, 02 Apr 2012 13:58:56 -0600 From: Stephen Warren User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.23) Gecko/20110921 Thunderbird/3.1.15 MIME-Version: 1.0 To: Alok Chauhan CC: khali@linux-fr.org, ben-linux@fluff.org, w.sang@pengutronix.de, olof@lixom.net, bones@secretlab.ca, omaplinuxkernel@gmail.com, ccross@android.com, ldewangan@nvidia.com, linux-tegra@vger.kernel.org, linux-i2c@vger.kernel.org, dgreid@chromium.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] i2c: tegra: Add delay before reset the controller References: <1333345982-16595-1-git-send-email-alokc@nvidia.com> In-Reply-To: <1333345982-16595-1-git-send-email-alokc@nvidia.com> X-Enigmail-Version: 1.1.2 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 04/01/2012 11:53 PM, Alok Chauhan wrote: > NACK interrupt generated before I2C controller generates > the STOP condition on bus. In Software, because of this > reset of controller is happening before I2C controller could > complete STOP condition. So wait for some time before resetting > the controller so that STOP condition has delivered properly on bus. > > Added delay of 2 clock period before reset the > controller in case of NACK error. > > Signed-off-by: Alok Chauhan Acked-by: Stephen Warren