From patchwork Mon Mar 29 06:09:03 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alain Volmat X-Patchwork-Id: 411048 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 6DA26C433E1 for ; Mon, 29 Mar 2021 06:10:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3CA5D6191A for ; Mon, 29 Mar 2021 06:10:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229884AbhC2GKS (ORCPT ); Mon, 29 Mar 2021 02:10:18 -0400 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:23036 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S229706AbhC2GJx (ORCPT ); Mon, 29 Mar 2021 02:09:53 -0400 Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 12T5t1kH017111; Mon, 29 Mar 2021 08:09:10 +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=qep9y4/69l92YA1EjW2kQGKevET5+Foel7W2OczJ070=; b=johFUWX2y9lH9QYZYBRwzdER9y8NxfR5PUssJWLCbRewF3xTWju8M0HN66CQX93sNDfs G5kj0MIY50ExifSDKBbjKSP8Z35NuZzd0Ym/grgl0ySOouWQH8Uj8OUSZGknAmbVf+Zr HsoPs7qKjk7SNHOz8T/Ijm3B6SFbS78IrS/J7cCCKZY9n+7ngbiBIgqPSyxvmBVUzrHc rKQwNxITKXvU69j2iuoVLQwDXx6mLcq14Z3B5tP7JbRnaJ07q+NuzOVp0YmLLZh72zEz BQKHxiTTMUEzPcqGDu91+l2SwGZqYSXpOlUjsRSNjRJ1MtDvZZZH2FavtjbilqyCqJWC 0w== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 37jvdmjm9j-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 29 Mar 2021 08:09:10 +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 EB905100040; Mon, 29 Mar 2021 08:09:08 +0200 (CEST) Received: from Webmail-eu.st.com (sfhdag2node3.st.com [10.75.127.6]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id B181D221772; Mon, 29 Mar 2021 08:09:08 +0200 (CEST) Received: from localhost (10.75.127.45) by SFHDAG2NODE3.st.com (10.75.127.6) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 29 Mar 2021 08:09:08 +0200 From: Alain Volmat To: , CC: , , , , , , , , , , Subject: [PATCH v3 0/2] i2c: stm32f7: add SMBus-Alert support Date: Mon, 29 Mar 2021 08:09:03 +0200 Message-ID: <1616998145-28278-1-git-send-email-alain.volmat@foss.st.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.75.127.45] X-ClientProxiedBy: SFHDAG3NODE1.st.com (10.75.127.7) 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=2021-03-29_02:2021-03-26,2021-03-29 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. --- 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): 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(+)