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[209.132.180.67]) by mx.google.com with ESMTP id d19si1629577pgv.522.2019.03.06.07.56.21; Wed, 06 Mar 2019 07:56:36 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729582AbfCFPMo convert rfc822-to-8bit (ORCPT + 99 others); Wed, 6 Mar 2019 10:12:44 -0500 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:11713 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727760AbfCFPMn (ORCPT ); Wed, 6 Mar 2019 10:12:43 -0500 Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx08-00178001.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x26F7O1E008105; Wed, 6 Mar 2019 16:12:18 +0100 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-00178001.pphosted.com with ESMTP id 2qyhgb0nvf-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Wed, 06 Mar 2019 16:12:18 +0100 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 5F66241; Wed, 6 Mar 2019 15:12:17 +0000 (GMT) Received: from Webmail-eu.st.com (sfhdag5node3.st.com [10.75.127.15]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 261214E54; Wed, 6 Mar 2019 15:12:17 +0000 (GMT) Received: from SFHDAG3NODE1.st.com (10.75.127.7) by SFHDAG5NODE3.st.com (10.75.127.15) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Wed, 6 Mar 2019 16:12:16 +0100 Received: from SFHDAG3NODE1.st.com ([fe80::1166:1abb:aad4:5f86]) by SFHDAG3NODE1.st.com ([fe80::1166:1abb:aad4:5f86%20]) with mapi id 15.00.1347.000; Wed, 6 Mar 2019 16:12:16 +0100 From: Bich HEMON To: Rob Herring , Mark Rutland , Maxime Coquelin , Alexandre TORGUE , Pierre Yves MORDRET , Wolfram Sang , "linux-i2c@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-stm32@st-md-mailman.stormreply.com" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" CC: Bich HEMON Subject: [PATCH] i2c: i2c-stm32f7: Fix SDADEL minimum formula Thread-Topic: [PATCH] i2c: i2c-stm32f7: Fix SDADEL minimum formula Thread-Index: AQHU1C78TFNtpaUoH0S1cdbw5UeFxQ== Date: Wed, 6 Mar 2019 15:12:16 +0000 Message-ID: <1551885125-22295-1-git-send-email-bich.hemon@st.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.75.127.51] Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-03-06_10:,, signatures=0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Nicolas Le Bayon It conforms with Reference Manual I2C timing section. Signed-off-by: Nicolas Le Bayon Signed-off-by: Bich Hemon --- drivers/i2c/busses/i2c-stm32f7.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c index 13e1213..4284fc9 100644 --- a/drivers/i2c/busses/i2c-stm32f7.c +++ b/drivers/i2c/busses/i2c-stm32f7.c @@ -432,7 +432,7 @@ static int stm32f7_i2c_compute_timing(struct stm32f7_i2c_dev *i2c_dev, STM32F7_I2C_ANALOG_FILTER_DELAY_MAX : 0); dnf_delay = setup->dnf * i2cclk; - sdadel_min = setup->fall_time - i2c_specs[setup->speed].hddat_min - + sdadel_min = i2c_specs[setup->speed].hddat_min + setup->fall_time - af_delay_min - (setup->dnf + 3) * i2cclk; sdadel_max = i2c_specs[setup->speed].vddat_max - setup->rise_time - -- 1.9.1