From patchwork Mon May 16 09:18:44 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Weitzel X-Patchwork-Id: 1500 Return-Path: Delivered-To: unknown Received: from imap.gmail.com (74.125.159.109) by localhost6.localdomain6 with IMAP4-SSL; 08 Jun 2011 14:52:30 -0000 Delivered-To: patches@linaro.org Received: by 10.224.61.3 with SMTP id r3cs78109qah; Mon, 16 May 2011 02:18:52 -0700 (PDT) Received: by 10.204.14.144 with SMTP id g16mr2576324bka.34.1305537531548; Mon, 16 May 2011 02:18:51 -0700 (PDT) Received: from root.phytec.de (mail.x-arc.de [217.6.246.34]) by mx.google.com with ESMTP id r13si15922581bkw.32.2011.05.16.02.18.49; Mon, 16 May 2011 02:18:50 -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 BAFC2A30A1; Mon, 16 May 2011 11:21:19 +0200 (CEST) Received: from numalfix.phytec.de ([127.0.0.1]) by idefix.phytec.de (Lotus Domino Release 8.5.2FP2) with ESMTP id 2011051611184862-3409 ; Mon, 16 May 2011 11:18:48 +0200 Received: by numalfix.phytec.de (Postfix, from userid 1002) id A01D61A10EB; Mon, 16 May 2011 11:18:48 +0200 (CEST) From: Jan Weitzel To: linux-omap@vger.kernel.org, b-cousson@ti.com, 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 v2] ARM: omap4: i2c reset regs postidle Date: Mon, 16 May 2011 11:18:44 +0200 Message-Id: <1305537524-24753-1-git-send-email-j.weitzel@phytec.de> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <4DD0DC9C.5020300@linaro.org> References: <4DD0DC9C.5020300@linaro.org> X-MIMETrack: Itemize by SMTP Server on Idefix/Phytec(Release 8.5.2FP2|March 22, 2011) at 16.05.2011 11:18:48, Serialize by Router on Idefix/Phytec(Release 8.5.2FP2|March 22, 2011) at 16.05.2011 11:18:48, Serialize complete at 16.05.2011 11:18:48 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 --- v2: add Tested-by / Acked-by 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 */