From patchwork Mon Jun 26 09:51:28 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amelie Delaunay X-Patchwork-Id: 9808985 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 6A67160329 for ; Mon, 26 Jun 2017 09:52:40 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 70352269E2 for ; Mon, 26 Jun 2017 09:52:40 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 646B9274D2; Mon, 26 Jun 2017 09:52:40 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id AB44B269E2 for ; Mon, 26 Jun 2017 09:52:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=UwCTurj+ILKz7MfhqFzi6jaR5famyR9PAnqlFHUjFcI=; b=a9sVRjBmqNsFL7 9j+s4/Pf+9ZSo3HpJrxGFsnAcvnlSXMR6zrIANbipti9JrxaaxEqlR73NcL4EeKr1PJ0kvhVrBf5V DEiSUrLifV2XpddHpspTAj6wVPMW6THE0DNy6TnomeEqoMgjnKS0Jju0zyw11rGPtOHiXGOy/SdiX k2fvgN6Zvo5FObeWkL7YnbGsbqvlSOlW/SeAbTrAtKtD2YVOWIAYrKLodoLUI75p6mcbtWXOgbA8b LjB8+AFC5qgjIgdpNtHvTwaZhNbfHSIO5zCANiXIlcaHwF+S61pZPmGeZvro+9+xpZzI1NnN8MO/e OxJOLSjhlhv4IYi+48Tg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1dPQhB-0005l8-Op; Mon, 26 Jun 2017 09:52:37 +0000 Received: from mx07-00178001.pphosted.com ([62.209.51.94]) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1dPQgm-0004xQ-IH for linux-arm-kernel@lists.infradead.org; Mon, 26 Jun 2017 09:52:15 +0000 Received: from pps.filterd (m0046037.ppops.net [127.0.0.1]) by mx07-.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v5Q9nC9F021475; Mon, 26 Jun 2017 11:51:41 +0200 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-.pphosted.com with ESMTP id 2b9duphpn2-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Mon, 26 Jun 2017 11:51:41 +0200 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 A57F534; Mon, 26 Jun 2017 09:51:40 +0000 (GMT) Received: from Webmail-eu.st.com (Safex1hubcas21.st.com [10.75.90.44]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 7B9E513AF; Mon, 26 Jun 2017 09:51:40 +0000 (GMT) Received: from localhost (10.201.23.160) by Webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.339.0; Mon, 26 Jun 2017 11:51:40 +0200 From: Amelie Delaunay To: Alessandro Zummo , Alexandre Belloni , Rob Herring , Mark Rutland , Maxime Coquelin , Alexandre Torgue Subject: [PATCH 1/2] dt-bindings: rtc: stm32: add support for STM32H7 Date: Mon, 26 Jun 2017 11:51:28 +0200 Message-ID: <1498470689-26829-2-git-send-email-amelie.delaunay@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1498470689-26829-1-git-send-email-amelie.delaunay@st.com> References: <1498470689-26829-1-git-send-email-amelie.delaunay@st.com> MIME-Version: 1.0 X-Originating-IP: [10.201.23.160] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-06-26_08:, , signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170626_025212_923774_C93A2AEF X-CRM114-Status: GOOD ( 10.08 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Amelie Delaunay , linux-arm-kernel@lists.infradead.org, rtc-linux@googlegroups.com, linux-kernel@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This patch documents support for STM32H7 Real Time Clock. It introduces a new compatible and rework clock definitions. On STM32H7 we have a 'pclk' clock for register access, in addition to the 'rtc_ck' clock. Signed-off-by: Amelie Delaunay Acked-by: Rob Herring --- .../devicetree/bindings/rtc/st,stm32-rtc.txt | 32 ++++++++++++++++++---- 1 file changed, 27 insertions(+), 5 deletions(-) diff --git a/Documentation/devicetree/bindings/rtc/st,stm32-rtc.txt b/Documentation/devicetree/bindings/rtc/st,stm32-rtc.txt index e2837b9..0a4c371 100644 --- a/Documentation/devicetree/bindings/rtc/st,stm32-rtc.txt +++ b/Documentation/devicetree/bindings/rtc/st,stm32-rtc.txt @@ -1,17 +1,25 @@ STM32 Real Time Clock Required properties: -- compatible: "st,stm32-rtc". +- compatible: can be either "st,stm32-rtc" or "st,stm32h7-rtc", depending on + the device is compatible with stm32(f4/f7) or stm32h7. - reg: address range of rtc register set. -- clocks: reference to the clock entry ck_rtc. +- clocks: can use up to two clocks, depending on part used: + - "rtc_ck": RTC clock source. + It is required on stm32(f4/f7) and stm32h7. + - "pclk": RTC APB interface clock. + It is not present on stm32(f4/f7). + It is required on stm32h7. +- clock-names: must be "rtc_ck" and "pclk". + It is required only on stm32h7. - interrupt-parent: phandle for the interrupt controller. - interrupts: rtc alarm interrupt. - st,syscfg: phandle for pwrcfg, mandatory to disable/enable backup domain (RTC registers) write protection. -Optional properties (to override default ck_rtc parent clock): -- assigned-clocks: reference to the ck_rtc clock entry. -- assigned-clock-parents: phandle of the new parent clock of ck_rtc. +Optional properties (to override default rtc_ck parent clock): +- assigned-clocks: reference to the rtc_ck clock entry. +- assigned-clock-parents: phandle of the new parent clock of rtc_ck. Example: @@ -25,3 +33,17 @@ Example: interrupts = <17 1>; st,syscfg = <&pwrcfg>; }; + + rtc: rtc@58004000 { + compatible = "st,stm32h7-rtc"; + reg = <0x58004000 0x400>; + clocks = <&rcc RTCAPB_CK>, <&rcc RTC_CK>; + clock-names = "pclk", "rtc_ck"; + assigned-clocks = <&rcc RTC_CK>; + assigned-clock-parents = <&rcc LSE_CK>; + interrupt-parent = <&exti>; + interrupts = <17 1>; + interrupt-names = "alarm"; + st,syscfg = <&pwrcfg>; + status = "disabled"; + };