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=-5.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 118BEC2BA15 for ; Fri, 3 Apr 2020 06:00:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DA275206F6 for ; Fri, 3 Apr 2020 06:00:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Mfd0P8Xl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387805AbgDCGAv (ORCPT ); Fri, 3 Apr 2020 02:00:51 -0400 Received: from mail-pl1-f193.google.com ([209.85.214.193]:38703 "EHLO mail-pl1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731040AbgDCGAv (ORCPT ); Fri, 3 Apr 2020 02:00:51 -0400 Received: by mail-pl1-f193.google.com with SMTP id w3so2300799plz.5; Thu, 02 Apr 2020 23:00:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=x91h2tLyTlc0iDe/5j3RCDbqB7p+b6c6m++cx7QhiU4=; b=Mfd0P8XlBUeT3svQWKNFphNvd7/KN1aCiN2pYOjw1C1YhI4RksEgbj2lZlCOmuVydw yDkQT79vAi12Q8YcmSqpuWpbWKgzJr7F8jFnYppWPUNmxH6tiwgYEXUC000cH4NHtOnc 7BSSvrVODv1MRQNDKnevxlBOTKaSBpczQPjCAl1diwHz7RxwM8NhahytzhQWz59jPG+5 jqsjH4bVCsuV4idpO6E8JDuGLXfWXr7Y4i9c+Q2ddSkqqHCUqcmpm8/I5qWVjvFqL2LX /uv7eXMl531dJJ5E4PsW70QEntYZtv6Vj+gCSVc+OHCDaOWj1yQSgn0usqigtFNmHISh a0Fw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to:user-agent; bh=x91h2tLyTlc0iDe/5j3RCDbqB7p+b6c6m++cx7QhiU4=; b=Q1IH4/XE0z7w+ilJgtqZNL3g7AjWZkh2xc6+9l/GwlHMp2AI7k2/gNrEvVuNCyXDC5 B6odKcdd8Rl99+gMfLT8Jzk4pa2IIeJ5PG0Dyrj3hQSq3HJx65739vWq147P2zCa8P9L YqFiRJ5WIZxT9B5kmwiRoYVpXD13n0HsaLkFxCWcH5DyBl2/HHmZwqRKSJ04dP6i5LiF 52fN2IXf7m8cNuEkHNMPvYrWXDuMPmLiJWBpj9ASvAeBywebQ5x0ul0MqdfQQw5f+gYZ mxHNELGIwJSQpTQH++Yzc30EE6FdaHDXTSvRnE1TXRSyxholWD2r/PaAUAESlJAXaB4U UP7w== X-Gm-Message-State: AGi0PuZI0c4CAeJQinc7rei9KBMMOuWwRG4FUDmo89nu+whpOUohwekV NT2MmSri6ib6ha/y43nVNIM= X-Google-Smtp-Source: APiQypK8XbyWn3ZnQaFnbDolPcc04wWirWxbpBYroE8OL8s8uzDCEjQ/PWbPHv9R/8g/MsL6Oqt0pQ== X-Received: by 2002:a17:902:7404:: with SMTP id g4mr6126025pll.69.1585893650600; Thu, 02 Apr 2020 23:00:50 -0700 (PDT) Received: from localhost ([2600:1700:e321:62f0:329c:23ff:fee3:9d7c]) by smtp.gmail.com with ESMTPSA id h2sm5048442pfr.220.2020.04.02.23.00.49 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 02 Apr 2020 23:00:49 -0700 (PDT) Date: Thu, 2 Apr 2020 23:00:48 -0700 From: Guenter Roeck To: Evan Benn Cc: LKML , xingyu.chen@amlogic.com, jwerner@chromium.org, Andy Shevchenko , Anson Huang , Bjorn Andersson , Catalin Marinas , "David S. Miller" , Greg Kroah-Hartman , Jonathan Cameron , Leonard Crestez , Manivannan Sadhasivam , Marcin Juszkiewicz , Matthias Brugger , Mauro Carvalho Chehab , Olof Johansson , Rob Herring , Shawn Guo , Valentin Schneider , Vinod Koul , Will Deacon , Wim Van Sebroeck , linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-watchdog@vger.kernel.org Subject: Re: [PATCH v2 2/2] watchdog: Add new arm_smd_wdt watchdog driver Message-ID: <20200403060048.GA206691@roeck-us.net> References: <20200403052900.258855-1-evanbenn@chromium.org> <20200403162742.v2.2.Ia92bb4d4ce84bcefeba1d00aaa1c1e919b6164ef@changeid> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200403162742.v2.2.Ia92bb4d4ce84bcefeba1d00aaa1c1e919b6164ef@changeid> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Apr 03, 2020 at 04:29:00PM +1100, Evan Benn wrote: > From: Julius Werner > > This patch adds a watchdog driver that can be used on ARM systems > with the appropriate watchdog implemented in Secure Monitor firmware. > The driver communicates with firmware via a Secure Monitor Call. > This may be useful for platforms using TrustZone that want > the Secure Monitor firmware to have the final control over the watchdog. > > This is implemented on mt8173 chromebook devices oak, elm and hana in > arm trusted firmware file plat/mediatek/mt8173/drivers/wdt/wdt.c. > > Signed-off-by: Julius Werner > Signed-off-by: Evan Benn Reviewed-by: Guenter Roeck Guenter