From patchwork Thu Apr 21 11:47:00 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Weitzel X-Patchwork-Id: 1138 Return-Path: Delivered-To: unknown Received: from imap.gmail.com (74.125.159.109) by localhost6.localdomain6 with IMAP4-SSL; 08 Jun 2011 14:49:35 -0000 Delivered-To: patches@linaro.org Received: by 10.224.67.148 with SMTP id r20cs161312qai; Thu, 21 Apr 2011 04:47:14 -0700 (PDT) Received: by 10.223.57.5 with SMTP id a5mr3239767fah.90.1303386433854; Thu, 21 Apr 2011 04:47:13 -0700 (PDT) Received: from root.phytec.de (mail.microcatalog.org.uk [217.6.246.34]) by mx.google.com with ESMTP id g19si2175458faa.100.2011.04.21.04.47.11; Thu, 21 Apr 2011 04:47:12 -0700 (PDT) Received-SPF: neutral (google.com: 217.6.246.34 is neither permitted nor denied by best guess record for domain of weitzel@phytec.de) client-ip=217.6.246.34; Authentication-Results: mx.google.com; spf=neutral (google.com: 217.6.246.34 is neither permitted nor denied by best guess record for domain of weitzel@phytec.de) smtp.mail=weitzel@phytec.de Received: from idefix.phytec.de (idefix.phytec.de [172.16.0.10]) by root.phytec.de (Postfix) with ESMTP id 340AFBF092; Thu, 21 Apr 2011 13:49:21 +0200 (CEST) Received: from numalfix.phytec.de ([127.0.0.1]) by idefix.phytec.de (Lotus Domino Release 8.5.2 HF194) with ESMTP id 2011042113470972-199439 ; Thu, 21 Apr 2011 13:47:09 +0200 Received: by numalfix.phytec.de (Postfix, from userid 1002) id 955581A1A4B; Thu, 21 Apr 2011 13:47:09 +0200 (CEST) From: Jan Weitzel To: linux-omap@vger.kernel.org, andy.green@linaro.org, patches@linaro.org Cc: andy@warmcat.com, tony@atomide.com, peter.maydell@linaro.org, ben-linux@fluff.org, Jan Weitzel Subject: [PATCH] ARM: omap4: i2c reset regs postidle Date: Thu, 21 Apr 2011 13:47:00 +0200 Message-Id: <1303386420-12997-1-git-send-email-j.weitzel@phytec.de> X-Mailer: git-send-email 1.7.0.4 X-MIMETrack: Itemize by SMTP Server on Idefix/Phytec(Release 8.5.2 HF194|November 09, 2010) at 21.04.2011 13:47:09, Serialize by Router on Idefix/Phytec(Release 8.5.2 HF194|November 09, 2010) at 21.04.2011 13:47:10, Serialize complete at 21.04.2011 13:47:10 Without OMAP_I2C_FLAG_RESET_REGS_POSTIDLE I got i2c controller timeouts on each accsess after an NACK message. Taking this flag fix it. This patch is on top of the i2c feature implementation flags patches Signed-off-by: Jan Weitzel Tested-by: Andy Green Acked-by: Andy Green --- arch/arm/mach-omap2/omap_hwmod_44xx_data.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c index 5f4a1b2..3d3b4f4 100644 --- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c @@ -2130,7 +2130,8 @@ static struct omap_hwmod_class omap44xx_i2c_hwmod_class = { }; static struct omap_i2c_dev_attr i2c_dev_attr = { - .flags = OMAP_I2C_FLAG_BUS_SHIFT_NONE, + .flags = OMAP_I2C_FLAG_BUS_SHIFT_NONE | + OMAP_I2C_FLAG_RESET_REGS_POSTIDLE, }; /* i2c1 */