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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED autolearn=ham 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 65375C43381 for ; Fri, 8 Mar 2019 02:27:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 204DE20854 for ; Fri, 8 Mar 2019 02:27:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=nxp.com header.i=@nxp.com header.b="NTlRkMAN" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726261AbfCHC1a (ORCPT ); Thu, 7 Mar 2019 21:27:30 -0500 Received: from mail-eopbgr130058.outbound.protection.outlook.com ([40.107.13.58]:37252 "EHLO EUR01-HE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726242AbfCHC1a (ORCPT ); Thu, 7 Mar 2019 21:27:30 -0500 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=bbRzOwJeM++sA3QSxtgWAVvc++1TeeE0W9usjQtxkvc=; b=NTlRkMAN+4L5Bv7MY0VQu4f2ri5JyC6FvD3AoW9xbhhLhMjwDOV2iTXTuIIoyDJNy39L79kW9aWXRTCjDUdON4iQcnRUEYDMtpQxl78ZtViZjaMnpR/SqCACy0MWJtGGQ0AqPojReuRM2Svh2kE4jccnuWh5aBKcUZp1yNpT9+U= Received: from AM0PR04MB4211.eurprd04.prod.outlook.com (52.134.92.158) by AM0PR04MB4404.eurprd04.prod.outlook.com (52.135.149.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1686.18; Fri, 8 Mar 2019 02:25:48 +0000 Received: from AM0PR04MB4211.eurprd04.prod.outlook.com ([fe80::50ed:d1b5:c043:3b79]) by AM0PR04MB4211.eurprd04.prod.outlook.com ([fe80::50ed:d1b5:c043:3b79%2]) with mapi id 15.20.1686.018; Fri, 8 Mar 2019 02:25:48 +0000 From: Aisheng Dong To: Anson Huang , "catalin.marinas@arm.com" , "will.deacon@arm.com" , "shawnguo@kernel.org" , "s.hauer@pengutronix.de" , "kernel@pengutronix.de" , "festevam@gmail.com" , "wim@linux-watchdog.org" , "linux@roeck-us.net" , Andy Gross , "heiko@sntech.de" , "horms+renesas@verge.net.au" , "arnd@arndb.de" , "maxime.ripard@bootlin.com" , "jagan@amarulasolutions.com" , "bjorn.andersson@linaro.org" , "enric.balletbo@collabora.com" , "marc.w.gonzalez@free.fr" , "olof@lixom.net" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "linux-watchdog@vger.kernel.org" CC: dl-linux-imx Subject: RE: [PATCH V7 1/3] watchdog: imx_sc: Add i.MX system controller watchdog support Thread-Topic: [PATCH V7 1/3] watchdog: imx_sc: Add i.MX system controller watchdog support Thread-Index: AQHU07jNtorBWhAbJkylCtaCxH6iDKYAGsHAgAAXwOCAAAGQcIAAA5JQgADMeyA= Date: Fri, 8 Mar 2019 02:25:48 +0000 Message-ID: References: <1551834095-19950-1-git-send-email-Anson.Huang@nxp.com> In-Reply-To: Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=aisheng.dong@nxp.com; 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received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: uz7X1occJ9f19xIuvg/NbqstRfAWrgROeDEywelW38ss4dQwbdSDTlSn32whDooWdvRGkLAf/2gK/CrXv8l3PV3C9RykkjG3gNyHycqCMUbWBgf6WdoQ4a9an786p9uEXZUBMpy+uFrrZV2G27Ilm3SAFPa0bt/YXIR9w+dO4bPdoRiOmq9VJ/13pYWCOlKB0IYG9ci1qZTFxcnAWEZ0v/ImIlMoDSHdMbl5j8CpT1rUgzGU/UGBGhgNcPMGbFbvFvbCxzf5lMAZQHdyuNKbEHXdFBDyGyPHSudh1Mnbm0di3UWenVxZsRzeJ+qDYI+URr2QCGwQZKVqz+J9teaDla3X5nZIxaXBFpXzDFMNBXlbaqwa7DwMstqmfuWq54M2S18CwT5vLSqNOsy3XPkYw9KBxy313l1BMLSeU3S47Pc= Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 6e72182e-0937-4b0a-6471-08d6a36d60ac X-MS-Exchange-CrossTenant-originalarrivaltime: 08 Mar 2019 02:25:48.7356 (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: AM0PR04MB4404 Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org [...] > > > > > > As I replied in another mail, it actually does not depend on SCU. > > > > Let's wait for Rob's comment on whether we could move watchdog Out > > > > of SCU node. > > > > > > Per previous discussion, the dependency here is to prevent enabling > > > this module for platform without IMX SCU, although it does NOT use > > > SCU IPC call, but the SMC call trap into ARM-Trusted-Firmware will > > > eventually call SCU API, so it still depends on IMX SCU hardware, I > > > am NOT very sure if it is correct to remove it here. > > > > > > > Then it's ATF depends on SCU, not this virtual watchdog based on ARM > > SIP, right? >=20 > But we don't have ATF driver in Linux kernel..., I am confused, anyway, i= f > Guenter agrees, I can remove this dependency here. >=20 So far the only thing that watchdog depends on SCU driver is that it needs SCU driver to create a platform devices for it. We need wait Rob's feedback, if he agree moved the watchdog node Out of SCU, we can remove this dependency. Regards Dong Aisheng > Anson. >=20 > > > > Regards > > Dong Aisheng > > > > > > > > > > > + depends on HAVE_ARM_SMCCC > > > > > + select WATCHDOG_CORE > > > > > + help > > > > > + This is the driver for the system controller watchdog > > > > > + on the NXP i.MX SoCs with system controller inside. > > > > > + If you have one of these processors and wish to have > > > > > + watchdog support enabled, say Y, otherwise say N. > > > > > +