From patchwork Thu Apr 19 13:21:42 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amelie Delaunay X-Patchwork-Id: 10350079 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 9900C6023A for ; Thu, 19 Apr 2018 13:25:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8882E20072 for ; Thu, 19 Apr 2018 13:25:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7C2EC28A1D; Thu, 19 Apr 2018 13:25:19 +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=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id EBC5520072 for ; Thu, 19 Apr 2018 13:25:18 +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=Jzp/n6b62S5GWiw8CaxdWvx7ikf2eWKZ8G5rTl7ISUU=; b=hwAKO7WJKhwPq5 VG14Z7Hk7dssG57MZShKkokZaWwJXAdmOd/ZTt9gJ0tVYp5pvk9kaX1O/uKJQ+wXYvLD5ycg3X3m1 s6YommzM46ACE/XC35UacxrChVisCV4hdhEQgtVmTg28oQuNoArgKqcXfP4pXh07FS0SXvWkAqBtp pqvvmGstuOo+nFsPDQYl6VnrFJO/Y/WfFZhg39sgUMxi6zN3WJBTtGs8FibF4LajJCTNHFJQiw8gS RUUey375QfXs/GhBle8DL0mIot+d9ornEniWpAi1WrqIRFHeMplyLOmRR+qB1u0ya9zcXH4tg/uLP YqNV53K3+QsESCwatNVQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1f99Yc-0006yq-K1; Thu, 19 Apr 2018 13:25:03 +0000 Received: from mx07-00178001.pphosted.com ([62.209.51.94]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1f99W0-0005vc-33 for linux-arm-kernel@lists.infradead.org; Thu, 19 Apr 2018 13:22:27 +0000 Received: from pps.filterd (m0046668.ppops.net [127.0.0.1]) by mx07-.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id w3JDEkRP018325; Thu, 19 Apr 2018 15:22:03 +0200 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 2hds2asxrs-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Thu, 19 Apr 2018 15:22:03 +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 82A9938; Thu, 19 Apr 2018 13:22:02 +0000 (GMT) Received: from Webmail-eu.st.com (Safex1hubcas24.st.com [10.75.90.94]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 597C64EB0; Thu, 19 Apr 2018 13:22:02 +0000 (GMT) Received: from SAFEX1HUBCAS22.st.com (10.75.90.93) by Safex1hubcas24.st.com (10.75.90.94) with Microsoft SMTP Server (TLS) id 14.3.361.1; Thu, 19 Apr 2018 15:22:02 +0200 Received: from localhost (10.201.20.5) by Webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.361.1; Thu, 19 Apr 2018 15:22:01 +0200 From: Amelie Delaunay To: Alessandro Zummo , Alexandre Belloni , Rob Herring , Mark Rutland , Maxime Coquelin , Alexandre Torgue Subject: [PATCH 3/4] dt-bindings: rtc: update stm32-rtc documentation for st, syscfg property Date: Thu, 19 Apr 2018 15:21:42 +0200 Message-ID: <1524144103-21432-4-git-send-email-amelie.delaunay@st.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1524144103-21432-1-git-send-email-amelie.delaunay@st.com> References: <1524144103-21432-1-git-send-email-amelie.delaunay@st.com> MIME-Version: 1.0 X-Originating-IP: [10.201.20.5] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2018-04-19_05:, , signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180419_062223_339495_978F2BA7 X-CRM114-Status: GOOD ( 15.30 ) 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: linux-rtc@vger.kernel.org, devicetree@vger.kernel.org, Amelie Delaunay , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.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 RTC driver should not be aware of the PWR registers offset and bits position. Furthermore, we can imagine that Disable Backup Protection (DBP) relative register and bit mask could change depending on the SoC. So this patch moves st,syscfg property from single pwrcfg phandle to pwrcfg phandle/offset/mask triplet. Signed-off-by: Amelie Delaunay Acked-by: Alexandre TORGUE --- Documentation/devicetree/bindings/rtc/st,stm32-rtc.txt | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/Documentation/devicetree/bindings/rtc/st,stm32-rtc.txt b/Documentation/devicetree/bindings/rtc/st,stm32-rtc.txt index a66692a..00f8b5d 100644 --- a/Documentation/devicetree/bindings/rtc/st,stm32-rtc.txt +++ b/Documentation/devicetree/bindings/rtc/st,stm32-rtc.txt @@ -14,8 +14,10 @@ Required properties: 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. +- st,syscfg: phandle/offset/mask triplet. The phandle to pwrcfg used to + access control register at offset, and change the dbp (Disable Backup + Protection) bit represented by the mask, mandatory to disable/enable backup + domain (RTC registers) write protection. Optional properties (to override default rtc_ck parent clock): - assigned-clocks: reference to the rtc_ck clock entry. @@ -31,7 +33,7 @@ Example: assigned-clock-parents = <&rcc 1 CLK_LSE>; interrupt-parent = <&exti>; interrupts = <17 1>; - st,syscfg = <&pwrcfg>; + st,syscfg = <&pwrcfg 0x00 0x100>; }; rtc: rtc@58004000 { @@ -44,5 +46,5 @@ Example: interrupt-parent = <&exti>; interrupts = <17 1>; interrupt-names = "alarm"; - st,syscfg = <&pwrcfg>; + st,syscfg = <&pwrcfg 0x00 0x100>; };