From patchwork Wed May 5 13:14:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alain Volmat X-Patchwork-Id: 431391 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, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 47B89C43460 for ; Wed, 5 May 2021 13:17:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0BE77613C4 for ; Wed, 5 May 2021 13:17:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232541AbhEENSd (ORCPT ); Wed, 5 May 2021 09:18:33 -0400 Received: from mx07-00178001.pphosted.com ([185.132.182.106]:5536 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229606AbhEENSc (ORCPT ); Wed, 5 May 2021 09:18:32 -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 145DHMeS022118; Wed, 5 May 2021 15:17:23 +0200 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=oKWdkh59xaWBXpAlbJc3K7xKwP0fD1UPO9YaA7JF6dk=; b=XELtC+voQP/UEhp6mOTj0IhYvZm9YYViaUf3ZgfQTviRfFHehe63ZMXfylx63UJuUsfm BY7/n9BK8VSY7PNM30BaZ3D+HFS3cbwW2ReDumx1M0yL+fRKDsCiYFsZnzX88TLRlM4J n3+x7gyjmmUmDuzuiJwUnk62sY8/CC5Ir2XVBd3q7HBpHMu91ExY7OvgjMCiK70HmVMs 331yNAMJEeuy1F+kRhDNy9YO9dmgX2uGOW+w6EDRleFIL7b8TB0/4wkOdMGLZYWIKnIg MqToVwA4Cl6Tk2DXMTzSZO55v4TmsXrI70yzdVNlCi7QVJrQobnkHV3mc9JiwTucS4/S aw== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 38bea3vd3u-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 05 May 2021 15:17:23 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id DE7E510002A; Wed, 5 May 2021 15:17:21 +0200 (CEST) Received: from Webmail-eu.st.com (sfhdag2node3.st.com [10.75.127.6]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id AA7D22C4206; Wed, 5 May 2021 15:17:21 +0200 (CEST) Received: from localhost (10.75.127.51) by SFHDAG2NODE3.st.com (10.75.127.6) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 5 May 2021 15:17:21 +0200 From: Alain Volmat To: , CC: , , , , , , , , , , Subject: [PATCH v4 0/2] i2c: stm32f7: add SMBus-Alert support Date: Wed, 5 May 2021 15:14:37 +0200 Message-ID: <1620220479-2647-1-git-send-email-alain.volmat@foss.st.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.75.127.51] X-ClientProxiedBy: SFHDAG2NODE1.st.com (10.75.127.4) To SFHDAG2NODE3.st.com (10.75.127.6) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391, 18.0.761 definitions=2021-05-05_07:2021-05-05,2021-05-05 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 smbus-alert is added in order to differenciate with the existing smbus binding. SMBus-Alert is an optional SMBus feature and 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 "smbus-alert" property. --- v4: add a new generic smbus-alert property instead of st,smbus-alert update driver to use smbus-alert instead of st,smbus-alert v3: use lore.kernel.org links instead of marc.info 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): i2c: add binding to mark a bus as supporting SMBus-Alert i2c: stm32f7: add SMBus-Alert support Documentation/devicetree/bindings/i2c/i2c.txt | 7 ++- drivers/i2c/busses/i2c-stm32f7.c | 73 +++++++++++++++++++++++++++ 2 files changed, 78 insertions(+), 2 deletions(-)