From mboxrd@z Thu Jan 1 00:00:00 1970 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=-3.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 0EAEBC10F05 for ; Thu, 21 Mar 2019 02:26:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D05A1218D8 for ; Thu, 21 Mar 2019 02:26:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=nxp.com header.i=@nxp.com header.b="qPcWSjP6" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727782AbfCUC0g (ORCPT ); Wed, 20 Mar 2019 22:26:36 -0400 Received: from mail-eopbgr20064.outbound.protection.outlook.com ([40.107.2.64]:32454 "EHLO EUR02-VE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726983AbfCUC0g (ORCPT ); Wed, 20 Mar 2019 22:26:36 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=+lBWMEKAwwR7FliQAmvHDF4QnEd4P/HnbDpBKHz2Whc=; b=qPcWSjP6GLwE9PaEMz8yws2hCYoxXyU6YZUKKuGo2t31WAWCSOa9VVvRtWBDWuqvw8olZwKuNyYNkb6eTdbz4CMW6P9qRlo+I3zBIRaboeWzXTeVe4XIcD5fdAmUgWqa1cmudJFRNcgR8rbnWkvbyZ9sQrMBiJhvx+naiL/oeqY= Received: from DB3PR0402MB3916.eurprd04.prod.outlook.com (52.134.72.18) by DB3PR0402MB3785.eurprd04.prod.outlook.com (52.134.71.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1730.16; Thu, 21 Mar 2019 02:26:30 +0000 Received: from DB3PR0402MB3916.eurprd04.prod.outlook.com ([fe80::f1b4:a1fb:cfd1:3f08]) by DB3PR0402MB3916.eurprd04.prod.outlook.com ([fe80::f1b4:a1fb:cfd1:3f08%7]) with mapi id 15.20.1730.013; Thu, 21 Mar 2019 02:26:29 +0000 From: Anson Huang To: "wim@linux-watchdog.org" , "linux@roeck-us.net" , "robh+dt@kernel.org" , "mark.rutland@arm.com" , "shawnguo@kernel.org" , "s.hauer@pengutronix.de" , "kernel@pengutronix.de" , "festevam@gmail.com" , "catalin.marinas@arm.com" , "will.deacon@arm.com" , Aisheng Dong , Daniel Baluta , "horms+renesas@verge.net.au" , "heiko@sntech.de" , "maxime.ripard@bootlin.com" , Andy Gross , "jagan@amarulasolutions.com" , "bjorn.andersson@linaro.org" , "enric.balletbo@collabora.com" , "ezequiel@collabora.com" , "stefan.wahren@i2se.com" , "marc.w.gonzalez@free.fr" , "olof@lixom.net" , "linux-watchdog@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" CC: dl-linux-imx Subject: [PATCH V9 0/4] Add i.MX8QXP system controller watchdog Thread-Topic: [PATCH V9 0/4] Add i.MX8QXP system controller watchdog Thread-Index: AQHU3419SZ6L5v/Fc0y0OruBFf0TYQ== Date: Thu, 21 Mar 2019 02:26:29 +0000 Message-ID: <1553134884-1720-1-git-send-email-Anson.Huang@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK0PR04CA0017.apcprd04.prod.outlook.com (2603:1096:203:36::29) To DB3PR0402MB3916.eurprd04.prod.outlook.com (2603:10a6:8:10::18) authentication-results: spf=none (sender IP is ) smtp.mailfrom=anson.huang@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [119.31.174.66] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: b6739b71-426c-4b3a-ef24-08d6ada4a024 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600127)(711020)(4605104)(4618075)(2017052603328)(7153060)(7193020);SRVR:DB3PR0402MB3785; x-ms-traffictypediagnostic: DB3PR0402MB3785: x-ld-processed: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635,ExtAddr x-microsoft-antispam-prvs: x-forefront-prvs: 0983EAD6B2 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(346002)(39860400002)(376002)(136003)(396003)(366004)(199004)(189003)(316002)(478600001)(486006)(2616005)(7736002)(476003)(305945005)(66066001)(8676002)(81156014)(14454004)(386003)(110136005)(6506007)(36756003)(68736007)(6486002)(14444005)(6436002)(256004)(102836004)(52116002)(105586002)(99286004)(81166006)(106356001)(26005)(186003)(97736004)(4326008)(50226002)(2501003)(8936002)(25786009)(3846002)(6116002)(6512007)(5660300002)(53936002)(2906002)(86362001)(2201001)(7416002)(71200400001)(71190400001)(921003)(1121003);DIR:OUT;SFP:1101;SCL:1;SRVR:DB3PR0402MB3785;H:DB3PR0402MB3916.eurprd04.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: Yv0VgRvQ+wdAb8n+Rbvk1dZ9sGMkCLgfBhH/cJ5/NhcM2T9/13TZPd6qxvHVk3OB69jSAKOz6SbZ1tKM5YN4C69WdpfsPv0EBiM3VXPL4mRH9GnPylc1hwsenkcdDdBFWUhtnv6/MU59CKQ2fPgIzaP3BiGY7Xk1OE2a0noM0uLPaew8ESEeqADc7Wbw+pwN1oCZlrcJmP6Ev9HdObaDGKmYXHisSzUd8b6DdCcDKlbbqvhZmIqdR4ecF2NEkZkHE4N+rZtUwTkjAFFf96dvOliz8bEYkhzNh8fcv5xesiMV2Y5I4taf421eQsR7uvoNo8/zoePbBy2r32dsOdnIiETC9Y6lVOxptldt3tHxkITXor/J+c6YQHQAdN6kuqs9oyIMDQNChTceyXI/7lpQA+9DsGra/mkm87/olun115c= Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: b6739b71-426c-4b3a-ef24-08d6ada4a024 X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Mar 2019 02:26:29.7934 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB3PR0402MB3785 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org i.MX8QXP is an ARMv8 Cortex-A35 SoC with a Cortex-M4 system controller inside, the system controller manages overall power, clock, secure RTC and watchdog etc., so Linux kernel running on A35 needs to communicate with system controller for watchdog operation, this system controller watchdog will call SMC to trap to EL3 secure world ARM-Trusted-Firmware and then it will request system controller to do the watchdog operation via IPC. Changes since V8: - change the timeout value to be from DT instead of from module parameter, and also update the binding doc and dts to add timeout property. Anson Huang (4): dt-bindings: watchdog: add i.MX system controller watchdog watchdog: imx_sc: Add i.MX system controller watchdog support arm64: defconfig: add support for i.MX system controller watchdog arm64: dts: imx8qxp: add system controller watchdog support .../bindings/watchdog/fsl-imx-sc-wdt.txt | 24 +++ arch/arm64/boot/dts/freescale/imx8qxp.dtsi | 5 + arch/arm64/configs/defconfig | 1 + drivers/watchdog/Kconfig | 16 ++ drivers/watchdog/Makefile | 1 + drivers/watchdog/imx_sc_wdt.c | 177 +++++++++++++++++= ++++ 6 files changed, 224 insertions(+) create mode 100644 Documentation/devicetree/bindings/watchdog/fsl-imx-sc-w= dt.txt create mode 100644 drivers/watchdog/imx_sc_wdt.c --=20 2.7.4