From patchwork Wed Feb 1 14:34:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frieder Schrempf X-Patchwork-Id: 4818 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:eb09:0:0:0:0:0 with SMTP id s9csp318060wrn; Wed, 1 Feb 2023 06:46:02 -0800 (PST) X-Google-Smtp-Source: AK7set+yqKnjKzZxHzQ7ZlCUqMd1vq6X9rfRFrcXdyeuUhWBDc04GyexVzDC/atvzsNuIVU2ZA/X X-Received: by 2002:a17:903:2302:b0:196:6162:1a76 with SMTP id d2-20020a170903230200b0019661621a76mr4066243plh.0.1675262762039; Wed, 01 Feb 2023 06:46:02 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1675262762; cv=none; d=google.com; s=arc-20160816; b=khLmrfCWcn/fKvE+d/V5eJiTHU+TiRhe9AIstzCmakdiBRk2UN+4hS3CtQgNo331x9 EQ6tGhj2PmnEdnDCQlYgPbSy0Nibd98mQbe8KRu4Z/5IjGAW9Z5pDtJJFbBBjpe6smrX ia1egxx0USS5FolTaRSdlwnUapCAB6yCbzAwGvdG0cvU/q+BHvezSmGsERAUXBJI1fkf dQv/PQ37fjEeJTvGEdT7KpEoc5umVBT7Jy4CphtblufpD/8qZEyosP1ABekycmlN5SfP xNBvHFWEu7JEYDgxOS58+ZmW9hOUOCXrv+4CNCK2PsnmFywT51msuzaXavj0gBQtZUvj cK+Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from:dkim-signature; bh=jpzkr24nHKJp5IYEK48VP/WYJnaAAqAY3mtPMKQ4JTk=; b=zNLFdrIScypin4x6rbAw/EsY437uyKXnNP3i0S9FrDTGE4ayKmAWZ+pANSGDMf9Kyj PfuwZk6vUI1lr5e4RNLtgJRHFcfWC22ffLaBZHDvs1cHZLV4+yA1nISPwEQwCao6fmpe CT9P+P+xieUooLnU2PEhp/wFhGOUD5hun/uAL06BlON+USceAftzg4Uh9cPdY7ZVcOcY Bqy/x/UMqDjuGtYNLyYICHGw2Rp0UKTaNaUdscDcOSGxeyH24QF8O4UY/+0+e+pfE/pT /87V6RU/IGmF6g40/d/xR74wLyZ2g8rxZInsHARryp8KMUfCMzHv42b8YyBeyNksxSw5 gb0Q== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@fris.de header.s=dkim header.b=EyhNDpIm; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=fris.de Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id 21-20020a170902c15500b001963669c7d4si19055522plj.532.2023.02.01.06.45.49; Wed, 01 Feb 2023 06:46:02 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@fris.de header.s=dkim header.b=EyhNDpIm; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=fris.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232675AbjBAOnf (ORCPT + 99 others); Wed, 1 Feb 2023 09:43:35 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48880 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232536AbjBAOnM (ORCPT ); Wed, 1 Feb 2023 09:43:12 -0500 Received: from mail.fris.de (mail.fris.de [IPv6:2a01:4f8:c2c:390b::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3D6052E82E; Wed, 1 Feb 2023 06:43:03 -0800 (PST) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 75799BFC6C; Wed, 1 Feb 2023 15:34:48 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fris.de; s=dkim; t=1675262091; h=from:subject:date:message-id:to:cc:mime-version: content-transfer-encoding; bh=jpzkr24nHKJp5IYEK48VP/WYJnaAAqAY3mtPMKQ4JTk=; b=EyhNDpImLtYrLnSp9RszhmfZjgngLI5STcz8zOdrh17GinHCp5YJE3zgtszbPSiQnpAnae xNdr4zrlZ0mKxAUaBUSqQJuGlTP2/pCqfbrB5/hovHvR+PojO5PttjnGFIcnjJ31qp23nr KdZlZTyJbhqvHE24LaQGzhdy4qYwLM4nxNYHAe/PUIY61wf7idcvDamcz4jI6virl51pHY jpdHe8kKUEDGJjPiRr0KhLIL4GZhloH23lwsCEaQ1ykSVM7YcpFDTIMNYXmkKDs1IVwsqR A9x7BKDpE/1rj0AeNSB3yW+hOWuKYYiBQdV0CGzRcpIomE9IBP6lCZc8K2iNeA== From: Frieder Schrempf To: Alexandre Belloni , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-rtc@vger.kernel.org Cc: Frieder Schrempf , Alessandro Zummo , Krzysztof Kozlowski , Rob Herring , Sascha Hauer , Shawn Guo Subject: [PATCH 0/7] Enable backup switch mode on RTCs via devicetree Date: Wed, 1 Feb 2023 15:34:22 +0100 Message-Id: <20230201143431.863784-1-frieder@fris.de> MIME-Version: 1.0 X-Last-TLS-Session-Version: TLSv1.3 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1756640326157508999?= X-GMAIL-MSGID: =?utf-8?q?1756640326157508999?= From: Frieder Schrempf Some RTC devices like the RV3028 have BSM disabled as factory default. This makes the RTC quite useless if it is expected to preserve the time on hardware that has a battery-buffered supply for the RTC. Let boards that have a buffered supply for the RTC force the BSM to the desired value via devicetree by setting the 'backup-switch-mode' property. That way the RTC on the boards work as one would expect them to do without any per-board intervention through userspace tools to enable BSM. Frieder Schrempf (7): dt-bindings: rtc: Move RV3028 to separate binding file dt-bindings: rtc: Add backup-switch-mode property dt-bindings: rtc: microcrystal,rv3032: Add backup-switch-mode property rtc: Move BSM defines to separate header for DT usage rtc: class: Support setting backup switch mode from devicetree arm64: dts: imx8mm-kontron: Remove useless trickle-diode-disable from RTC node arm64: dts: imx8mm-kontron: Enable backup switch mode for RTC on OSM-S module .../bindings/rtc/microcrystal,rv3028.yaml | 60 +++++++++++++++++++ .../devicetree/bindings/rtc/rtc.yaml | 7 +++ .../devicetree/bindings/rtc/trivial-rtc.yaml | 2 - .../dts/freescale/imx8mm-kontron-osm-s.dtsi | 3 +- drivers/rtc/class.c | 14 +++++ include/dt-bindings/rtc/rtc.h | 11 ++++ include/uapi/linux/rtc.h | 6 +- 7 files changed, 95 insertions(+), 8 deletions(-) create mode 100644 Documentation/devicetree/bindings/rtc/microcrystal,rv3028.yaml create mode 100644 include/dt-bindings/rtc/rtc.h