From patchwork Fri Apr 3 05:28:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Evan Benn X-Patchwork-Id: 202480 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=-9.9 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, 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 7723AC43331 for ; Fri, 3 Apr 2020 05:29:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4A175206F5 for ; Fri, 3 Apr 2020 05:29:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="PKt+VBA+" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387580AbgDCF3l (ORCPT ); Fri, 3 Apr 2020 01:29:41 -0400 Received: from mail-pl1-f193.google.com ([209.85.214.193]:35166 "EHLO mail-pl1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387526AbgDCF3f (ORCPT ); Fri, 3 Apr 2020 01:29:35 -0400 Received: by mail-pl1-f193.google.com with SMTP id c12so2280827plz.2 for ; Thu, 02 Apr 2020 22:29:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=KLw94QzOfrSlneIl66aJeqE3HkANlVSekWIjkWzxQvY=; b=PKt+VBA+Nj5QZwvU3VoVz05hn4VqZW6gsQSaHWePw1hDrG4uF2wyEYHvoL9axac+UT /SJjESrKpWKeoKV1kosEcWp57JDwWud2EhlhbUcvhu7yikFnAgLxg4CfGiHupmpsLtpj vUaLYeq+JaOBPdA4aX0sEgFpn/+obLlbfQDXI= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=KLw94QzOfrSlneIl66aJeqE3HkANlVSekWIjkWzxQvY=; b=pfTKY/KqyoDuF2ss6E9NZ31TRLTuTG7Dry0IGjmWuFfvyLDmO1hj11J0Wqr4E/Cvwf BwWDvvewne8n91CdPQJ5ALALBc/7UWrA6vrFLO8ohri4TgNjJC4zffZaHMuM1rH9RAFp ApgUunocwaHzqZAT1YdtlsmVg2QaLXt0tlmCYhoMEjqRoFgo4/f5c0CN+J5zXZ9qcXJl azJnYxPGggrHNFZVOPz0DL/veptBPQyGXPjMZDT4xdR68nA50Deeq5OjCqpF+nwckJN2 4LH2ZNbYCZPpZAzqReGxmEEl39nvm6mLpALlfFcrqGklhPe2Z1xksCGsMfKKIMj3pf7j dLmQ== X-Gm-Message-State: AGi0PuZNqvp6dUN5ArdvORSDLfuwyHs8INKvSCprAkLwTmrmZIzqNZY7 Up/RWzdEszNgWELwNWGkPdekeg== X-Google-Smtp-Source: APiQypKFrq1hzvYHu1Gx2CYehefEsIunfver6DV/APN1vij1JYePG7Mnfe62OlzktNTKKCAUvDcPkg== X-Received: by 2002:a17:902:ff14:: with SMTP id f20mr6049293plj.206.1585891774509; Thu, 02 Apr 2020 22:29:34 -0700 (PDT) Received: from localhost ([2401:fa00:9:14:1105:3e8a:838d:e326]) by smtp.gmail.com with ESMTPSA id c21sm4452156pgn.84.2020.04.02.22.29.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 02 Apr 2020 22:29:34 -0700 (PDT) From: Evan Benn To: LKML Cc: xingyu.chen@amlogic.com, jwerner@chromium.org, Evan Benn , Andy Shevchenko , "David S. Miller" , Greg Kroah-Hartman , Guenter Roeck , Jonathan Cameron , Mark Rutland , Matthias Brugger , Mauro Carvalho Chehab , Rob Herring , Wim Van Sebroeck , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-watchdog@vger.kernel.org Subject: [PATCH v2 1/2] dt-bindings: watchdog: Add ARM smc wdt for mt8173 watchdog Date: Fri, 3 Apr 2020 16:28:59 +1100 Message-Id: <20200403162742.v2.1.Id96574f1f52479d7a2f3b866b8a0552ab8c03d7f@changeid> X-Mailer: git-send-email 2.26.0.292.g33ef6b2f38-goog In-Reply-To: <20200403052900.258855-1-evanbenn@chromium.org> References: <20200403052900.258855-1-evanbenn@chromium.org> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This watchdog can be used on ARM systems with a Secure Monitor firmware to forward watchdog operations to firmware via a Secure Monitor Call. Signed-off-by: Evan Benn --- Changes in v3: - Change name back to arm Changes in v2: - Change name arm > mt8173 .../bindings/watchdog/arm-smc-wdt.yaml | 30 +++++++++++++++++++ MAINTAINERS | 6 ++++ 2 files changed, 36 insertions(+) create mode 100644 Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml diff --git a/Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml b/Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml new file mode 100644 index 0000000000000..24968f199413b --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml @@ -0,0 +1,30 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/watchdog/arm-smc-wdt.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ARM Secure Monitor Call based watchdog + +allOf: + - $ref: "watchdog.yaml#" + +maintainers: + - Julius Werner + +properties: + compatible: + enum: + - mediatek,mt8173-smc-wdt + +required: + - compatible + +examples: + - | + watchdog { + compatible = "mediatek,mt8173-smc-wdt"; + timeout-sec = <15>; + }; + +... diff --git a/MAINTAINERS b/MAINTAINERS index a6fbdf354d343..af8842b998a93 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1421,6 +1421,12 @@ S: Maintained F: Documentation/devicetree/bindings/interrupt-controller/amazon,al-fic.txt F: drivers/irqchip/irq-al-fic.c +ARM SMC WATCHDOG DRIVER +M: Julius Werner +R: Evan Benn +S: Maintained +F: devicetree/bindings/watchdog/arm-smc-wdt.yaml + ARM SMMU DRIVERS M: Will Deacon R: Robin Murphy