From patchwork Wed May 4 13:02:28 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Valentin Caron X-Patchwork-Id: 1626340 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=foss.st.com header.i=@foss.st.com header.a=rsa-sha256 header.s=selector1 header.b=samI+CtM; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by bilbo.ozlabs.org (Postfix) with ESMTP id 4KtcT92qVhz9sG3 for ; Wed, 4 May 2022 23:03:25 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350148AbiEDNGv (ORCPT ); Wed, 4 May 2022 09:06:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49192 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232905AbiEDNGq (ORCPT ); Wed, 4 May 2022 09:06:46 -0400 Received: from mx07-00178001.pphosted.com (mx07-00178001.pphosted.com [185.132.182.106]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 84028366AE; Wed, 4 May 2022 06:03:09 -0700 (PDT) Received: from pps.filterd (m0288072.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 244ALwRe018222; Wed, 4 May 2022 15:02:41 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=selector1; bh=xzVNZjTzmtBSIdVv6DBe++9eoUDnPj2RYYfZVOlqvaM=; b=samI+CtMvgD52A39gBqPpHXB+YG/3V36i7MpWEKQIKJaGJZooqnayV7FMkCE0zBVttQh OhQToxKdr7bvp2ZT5bgf6vgRueFifaxTTdAd434H4NjD40nPLdDGKqq2F/kFr4X5eSow wFQ7jqF6Sw/cSgsP8rTRKxijqDuiRQVXircx8anMfwkQLDyxULRNmVhwj7BDt+pRSj1d 5yPet6ZLC/WttKulqMbba2ZLGWOJP8iNlSQKMNT+pX3pdG0QDDcN+EVsenFw8I8xnF1S lHe0qDsp2z2MWRkt/22pZGI+LVuaYQweBf2sBEX+UlNdVCXDlmxmzuObprK7Ui89mcjF +A== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3frthjvemr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 04 May 2022 15:02:41 +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 12435100034; Wed, 4 May 2022 15:02:41 +0200 (CEST) Received: from Webmail-eu.st.com (sfhdag2node2.st.com [10.75.127.5]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 0A43121FE9E; Wed, 4 May 2022 15:02:41 +0200 (CEST) Received: from localhost (10.75.127.46) by SFHDAG2NODE2.st.com (10.75.127.5) with Microsoft SMTP Server (TLS) id 15.0.1497.26; Wed, 4 May 2022 15:02:40 +0200 From: Valentin Caron To: Alessandro Zummo , Alexandre Belloni , Rob Herring , Krzysztof Kozlowski , Alexandre Torgue CC: Gabriel Fernandez , Amelie Delaunay , Valentin Caron , , , , , Subject: [PATCH 1/6] dt-bindings: rtc: stm32: add st,lsco optional property to select output Date: Wed, 4 May 2022 15:02:28 +0200 Message-ID: <20220504130233.330983-2-valentin.caron@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220504130233.330983-1-valentin.caron@foss.st.com> References: <20220504130233.330983-1-valentin.caron@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.46] X-ClientProxiedBy: SFHDAG2NODE2.st.com (10.75.127.5) To SFHDAG2NODE2.st.com (10.75.127.5) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.858,Hydra:6.0.486,FMLib:17.11.64.514 definitions=2022-05-04_04,2022-05-04_01,2022-02-23_01 X-Spam-Status: No, score=-2.7 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,RCVD_IN_DNSWL_LOW,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE 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: devicetree@vger.kernel.org From: Amelie Delaunay STM32 RTC has three output pins: RTC_OUT1, RTC_OUT2 or RTC_OUT2_RMP. RTC Low-Speed Clock Output (LSCO) can be output on RTC_OUT1 or RTC_OUT2_RMP. This patch adds constants for RTC output bindings and adds st,lsco optional property for stm32 rtc driver, to select and enable LSCO. A pinctrl state is also optional to reserve pin for RTC output. Signed-off-by: Amelie Delaunay Signed-off-by: Valentin Caron --- .../devicetree/bindings/rtc/st,stm32-rtc.yaml | 20 +++++++++++++++++++ include/dt-bindings/rtc/rtc-stm32.h | 14 +++++++++++++ 2 files changed, 34 insertions(+) create mode 100644 include/dt-bindings/rtc/rtc-stm32.h diff --git a/Documentation/devicetree/bindings/rtc/st,stm32-rtc.yaml b/Documentation/devicetree/bindings/rtc/st,stm32-rtc.yaml index 764717ce1873..56d46ea35c5d 100644 --- a/Documentation/devicetree/bindings/rtc/st,stm32-rtc.yaml +++ b/Documentation/devicetree/bindings/rtc/st,stm32-rtc.yaml @@ -52,6 +52,13 @@ properties: override default rtc_ck parent clock phandle of the new parent clock of rtc_ck maxItems: 1 + st,lsco: + $ref: "/schemas/types.yaml#/definitions/uint32" + description: | + To select and enable RTC Low Speed Clock Output. + Refer to for the supported values. + Pinctrl state named "default" may be defined to reserve pin for RTC output. + allOf: - if: properties: @@ -65,6 +72,9 @@ allOf: minItems: 1 maxItems: 1 + st,lsco: + maxItems: 0 + clock-names: false required: @@ -82,6 +92,9 @@ allOf: minItems: 2 maxItems: 2 + st,lsco: + maxItems: 0 + required: - clock-names - st,syscfg @@ -101,6 +114,9 @@ allOf: assigned-clocks: false assigned-clock-parents: false + st,lsco: + maxItems: 1 + required: - clock-names @@ -130,12 +146,16 @@ examples: - | #include #include + #include rtc@5c004000 { compatible = "st,stm32mp1-rtc"; reg = <0x5c004000 0x400>; clocks = <&rcc RTCAPB>, <&rcc RTC>; clock-names = "pclk", "rtc_ck"; interrupts = ; + st,lsco = ; + pinctrl-0 = <&rtc_out2_rmp_pins_a>; + pinctrl-names = "default"; }; ... diff --git a/include/dt-bindings/rtc/rtc-stm32.h b/include/dt-bindings/rtc/rtc-stm32.h new file mode 100644 index 000000000000..2fd78c2e62d4 --- /dev/null +++ b/include/dt-bindings/rtc/rtc-stm32.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * This header provides constants for STM32_RTC bindings. + */ + +#ifndef _DT_BINDINGS_RTC_RTC_STM32_H +#define _DT_BINDINGS_RTC_RTC_STM32_H + +#define RTC_NO_OUT 0 +#define RTC_OUT1 1 +#define RTC_OUT2 2 +#define RTC_OUT2_RMP 3 + +#endif