From patchwork Thu Mar 18 13:44:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alain Volmat X-Patchwork-Id: 405057 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EDF6EC433E6 for ; Thu, 18 Mar 2021 13:46:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ABF5964E4D for ; Thu, 18 Mar 2021 13:46:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230010AbhCRNpf (ORCPT ); Thu, 18 Mar 2021 09:45:35 -0400 Received: from mx07-00178001.pphosted.com ([185.132.182.106]:18850 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230511AbhCRNpP (ORCPT ); Thu, 18 Mar 2021 09:45:15 -0400 Received: from pps.filterd (m0046668.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 12IDg0xD011735; Thu, 18 Mar 2021 14:45:02 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=selector1; bh=1cBACOkWwFgVHLV1t08H9i06ryZ+4fiD69xR3S9lcVw=; b=JchpHIeunO2KnBLqZHVTgCdLTG8myMSefqgkx+8OqFwdD8bTdBV07oHWUyzqr1S6RarE QiYIEgNeGjFRh6EVc09gZQ2HSjTJYCnQktPLssEoKXSpWEZkKP4Nr/iY/bBlqpV/SgOf /niu8H2IFaCH/ERHXbdMx3EzkubMXslJvJXVA4xhcWLIgRCHTj/kCJeTM0Glq8nUc+Xq Uo1YDAJPNC+UfoLcvsO6vTJjvB3w1h9kPdYgjxCtKyOvKE1yBUnuohpAGDAJKsdWxkjp MYrmWX8cjY9eDDXN8TgA6vJtIqM3I+JAomusxKmEu6cqMxCx9Dmw1xwpNWeroMzddARS Lg== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 378pr65pu3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 18 Mar 2021 14:45:02 +0100 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 72072100034; Thu, 18 Mar 2021 14:45:02 +0100 (CET) Received: from Webmail-eu.st.com (sfhdag2node3.st.com [10.75.127.6]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 56915226D15; Thu, 18 Mar 2021 14:45:02 +0100 (CET) Received: from localhost (10.75.127.50) by SFHDAG2NODE3.st.com (10.75.127.6) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 18 Mar 2021 14:45:02 +0100 From: Alain Volmat To: , CC: , , , , , , , , , , Subject: [PATCH v2 0/2] i2c: stm32f7: add SMBus-Alert support Date: Thu, 18 Mar 2021 14:44:47 +0100 Message-ID: <1616075089-28115-1-git-send-email-alain.volmat@foss.st.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.75.127.50] X-ClientProxiedBy: SFHDAG3NODE2.st.com (10.75.127.8) To SFHDAG2NODE3.st.com (10.75.127.6) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369, 18.0.761 definitions=2021-03-18_07:2021-03-17,2021-03-18 signatures=0 Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org This serie adds support for SMBus Alert on the STM32F7. A new binding st,smbus-alert is added in order to differenciate with the existing smbus binding. SMBA alert control and status logic must be enabled along with SMBALERT# pin configured via pinctrl in the device tree. This is the rational for adding "st,smbus-alert" property. --- v2: When SMBUS alert isn't available on the board (SMBA unused), this logic musn't be enabled. Enabling it unconditionally wrongly lead to get SMBA interrupts. So, add "st,smbus-alert" dedicated binding to have a smbus alert with a consistent pin configuration in DT. Alain Volmat (2): dt-bindings: i2c: stm32f7: add st,smbus-alert binding for SMBus Alert i2c: stm32f7: add SMBus-Alert support .../devicetree/bindings/i2c/st,stm32-i2c.yaml | 5 ++ drivers/i2c/busses/i2c-stm32f7.c | 73 +++++++++++++++++++ 2 files changed, 78 insertions(+)