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: 724531 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p3LBlDvA031315 for ; Thu, 21 Apr 2011 11:47:13 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752177Ab1DULrM (ORCPT ); Thu, 21 Apr 2011 07:47:12 -0400 Received: from mail.phytec.co.uk ([217.6.246.34]:52330 "EHLO root.phytec.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751493Ab1DULrM (ORCPT ); Thu, 21 Apr 2011 07:47:12 -0400 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 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Thu, 21 Apr 2011 11:47:13 +0000 (UTC) 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 */