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=-8.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 9CC27C47256 for ; Wed, 6 May 2020 13:45:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 74E6720752 for ; Wed, 6 May 2020 13:45:51 +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="pXhbgeR1" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728836AbgEFNpu (ORCPT ); Wed, 6 May 2020 09:45:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43272 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1725966AbgEFNpu (ORCPT ); Wed, 6 May 2020 09:45:50 -0400 Received: from mail-pg1-x543.google.com (mail-pg1-x543.google.com [IPv6:2607:f8b0:4864:20::543]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 17521C061A0F; Wed, 6 May 2020 06:45:50 -0700 (PDT) Received: by mail-pg1-x543.google.com with SMTP id d22so1127304pgk.3; Wed, 06 May 2020 06:45:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:subject:to:cc:references:from:autocrypt:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=S3Lwm4AKo+YF745y2UjeT2m8wwH3bfZOap41uVObmhM=; b=pXhbgeR1QKrcPuSNZiwXRMXBdl17dvD867jNinBv+BMnTfkH+cnwt6kgaa4T1nVWmr dbVKmBxjQ6N4NedamQUDQ50Svb0TpHEJBzeipLe6/Iq2TXy3gO+zCawrOtQlDl8m8egc mbRIqbVy6H/5NvRqUvX8al1LFclAmY/LxwOQdw/nrNWZtFQBqczvoSVsmpmbc4lmHU3h 0zMFzmCgITU412brnVgu51qHXBllle1mA7ynClUazyt+yRHNQQW9/pyqe57JXMcVvidd WaTA9Qx8e4ZfYIU4rJtjXAqsSxotlAXImNgdpP0F0uy9YZUGkOScAUhr0PG0wSQBXpwb hZGw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:subject:to:cc:references:from:autocrypt :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=S3Lwm4AKo+YF745y2UjeT2m8wwH3bfZOap41uVObmhM=; b=ahIU9+u7xBzQN2rOBFM9t1TNSObrM0WfX6P1QIObqTLeDJnoSbMt/ci+V3UBlnSQU1 yeChp7biTmwL5tkitSQOea8iUQEUu3v0O3o3QLL2SaX+R+fH0tDEjp289O8B2U6GQsio HMBzZT1BYnAaKPPT3IqcHVhnNX9U8GbWv66L5mR43RgDC2/oaacVqxy+SimSe1WkNQvs 4aq48p2cPOqeTk2POMkAZX1Hg0PYq3xykkvE3JRQuf2LyM3oP58MvYtNEEPHroAO5h18 RuG8CSKCkWfPxgveNpKtrssNfM/HE7j+b1pdJZpVk5HXH+QyK5gTW4DVv6lflsUjtN+0 zj5w== X-Gm-Message-State: AGi0PuYibTQ9TF9tGqoapGx8GQhyVd/JuwxkjT+1OU4329W9XjWazkfS 76U8uSYsi0royBFYC9gaSHc3IHYG X-Google-Smtp-Source: APiQypINpwMfiEoPsVfPVR3/1u/QrlIjA9AJighlTYyj1K8cdQyo3P+Dy7P9kv5Pnuns6elfp4Wx/A== X-Received: by 2002:a62:343:: with SMTP id 64mr8265734pfd.47.1588772749363; Wed, 06 May 2020 06:45:49 -0700 (PDT) Received: from server.roeck-us.net ([2600:1700:e321:62f0:329c:23ff:fee3:9d7c]) by smtp.gmail.com with ESMTPSA id 3sm1905650pfo.27.2020.05.06.06.45.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 06 May 2020 06:45:48 -0700 (PDT) Subject: Re: [PATCH v6 1/2] dt-bindings: watchdog: Add ARM smc wdt for mt8173 watchdog To: Evan Benn , LKML Cc: jwerner@chromium.org, xingyu.chen@amlogic.com, "David S. Miller" , Greg Kroah-Hartman , Mauro Carvalho Chehab , Rob Herring , Wim Van Sebroeck , devicetree@vger.kernel.org, linux-watchdog@vger.kernel.org References: <20200505031331.122781-1-evanbenn@chromium.org> <20200505131242.v6.1.Id96574f1f52479d7a2f3b866b8a0552ab8c03d7f@changeid> From: Guenter Roeck Autocrypt: addr=linux@roeck-us.net; keydata= xsFNBE6H1WcBEACu6jIcw5kZ5dGeJ7E7B2uweQR/4FGxH10/H1O1+ApmcQ9i87XdZQiB9cpN RYHA7RCEK2dh6dDccykQk3bC90xXMPg+O3R+C/SkwcnUak1UZaeK/SwQbq/t0tkMzYDRxfJ7 nyFiKxUehbNF3r9qlJgPqONwX5vJy4/GvDHdddSCxV41P/ejsZ8PykxyJs98UWhF54tGRWFl 7i1xvaDB9lN5WTLRKSO7wICuLiSz5WZHXMkyF4d+/O5ll7yz/o/JxK5vO/sduYDIlFTvBZDh gzaEtNf5tQjsjG4io8E0Yq0ViobLkS2RTNZT8ICq/Jmvl0SpbHRvYwa2DhNsK0YjHFQBB0FX IdhdUEzNefcNcYvqigJpdICoP2e4yJSyflHFO4dr0OrdnGLe1Zi/8Xo/2+M1dSSEt196rXaC kwu2KgIgmkRBb3cp2vIBBIIowU8W3qC1+w+RdMUrZxKGWJ3juwcgveJlzMpMZNyM1jobSXZ0 VHGMNJ3MwXlrEFPXaYJgibcg6brM6wGfX/LBvc/haWw4yO24lT5eitm4UBdIy9pKkKmHHh7s jfZJkB5fWKVdoCv/omy6UyH6ykLOPFugl+hVL2Prf8xrXuZe1CMS7ID9Lc8FaL1ROIN/W8Vk BIsJMaWOhks//7d92Uf3EArDlDShwR2+D+AMon8NULuLBHiEUQARAQABzTJHdWVudGVyIFJv ZWNrIChMaW51eCBhY2NvdW50KSA8bGludXhAcm9lY2stdXMubmV0PsLBgQQTAQIAKwIbAwYL CQgHAwIGFQgCCQoLBBYCAwECHgECF4ACGQEFAlVcphcFCRmg06EACgkQyx8mb86fmYFg0RAA nzXJzuPkLJaOmSIzPAqqnutACchT/meCOgMEpS5oLf6xn5ySZkl23OxuhpMZTVX+49c9pvBx hpvl5bCWFu5qC1jC2eWRYU+aZZE4sxMaAGeWenQJsiG9lP8wkfCJP3ockNu0ZXXAXwIbY1O1 c+l11zQkZw89zNgWgKobKzrDMBFOYtAh0pAInZ9TSn7oA4Ctejouo5wUugmk8MrDtUVXmEA9 7f9fgKYSwl/H7dfKKsS1bDOpyJlqhEAH94BHJdK/b1tzwJCFAXFhMlmlbYEk8kWjcxQgDWMu GAthQzSuAyhqyZwFcOlMCNbAcTSQawSo3B9yM9mHJne5RrAbVz4TWLnEaX8gA5xK3uCNCeyI sqYuzA4OzcMwnnTASvzsGZoYHTFP3DQwf2nzxD6yBGCfwNGIYfS0i8YN8XcBgEcDFMWpOQhT Pu3HeztMnF3HXrc0t7e5rDW9zCh3k2PA6D2NV4fews9KDFhLlTfCVzf0PS1dRVVWM+4jVl6l HRIAgWp+2/f8dx5vPc4Ycp4IsZN0l1h9uT7qm1KTwz+sSl1zOqKD/BpfGNZfLRRxrXthvvY8 BltcuZ4+PGFTcRkMytUbMDFMF9Cjd2W9dXD35PEtvj8wnEyzIos8bbgtLrGTv/SYhmPpahJA l8hPhYvmAvpOmusUUyB30StsHIU2LLccUPPOwU0ETofVZwEQALlLbQeBDTDbwQYrj0gbx3bq 7kpKABxN2MqeuqGr02DpS9883d/t7ontxasXoEz2GTioevvRmllJlPQERVxM8gQoNg22twF7 pB/zsrIjxkE9heE4wYfN1AyzT+AxgYN6f8hVQ7Nrc9XgZZe+8IkuW/Nf64KzNJXnSH4u6nJM J2+Dt274YoFcXR1nG76Q259mKwzbCukKbd6piL+VsT/qBrLhZe9Ivbjq5WMdkQKnP7gYKCAi pNVJC4enWfivZsYupMd9qn7Uv/oCZDYoBTdMSBUblaLMwlcjnPpOYK5rfHvC4opxl+P/Vzyz 6WC2TLkPtKvYvXmdsI6rnEI4Uucg0Au/Ulg7aqqKhzGPIbVaL+U0Wk82nz6hz+WP2ggTrY1w ZlPlRt8WM9w6WfLf2j+PuGklj37m+KvaOEfLsF1v464dSpy1tQVHhhp8LFTxh/6RWkRIR2uF I4v3Xu/k5D0LhaZHpQ4C+xKsQxpTGuYh2tnRaRL14YMW1dlI3HfeB2gj7Yc8XdHh9vkpPyuT nY/ZsFbnvBtiw7GchKKri2gDhRb2QNNDyBnQn5mRFw7CyuFclAksOdV/sdpQnYlYcRQWOUGY HhQ5eqTRZjm9z+qQe/T0HQpmiPTqQcIaG/edgKVTUjITfA7AJMKLQHgp04Vylb+G6jocnQQX JqvvP09whbqrABEBAAHCwWUEGAECAA8CGwwFAlVcpi8FCRmg08MACgkQyx8mb86fmYHNRQ/+ J0OZsBYP4leJvQF8lx9zif+v4ZY/6C9tTcUv/KNAE5leyrD4IKbnV4PnbrVhjq861it/zRQW cFpWQszZyWRwNPWUUz7ejmm9lAwPbr8xWT4qMSA43VKQ7ZCeTQJ4TC8kjqtcbw41SjkjrcTG wF52zFO4bOWyovVAPncvV9eGA/vtnd3xEZXQiSt91kBSqK28yjxAqK/c3G6i7IX2rg6pzgqh hiH3/1qM2M/LSuqAv0Rwrt/k+pZXE+B4Ud42hwmMr0TfhNxG+X7YKvjKC+SjPjqp0CaztQ0H nsDLSLElVROxCd9m8CAUuHplgmR3seYCOrT4jriMFBtKNPtj2EE4DNV4s7k0Zy+6iRQ8G8ng QjsSqYJx8iAR8JRB7Gm2rQOMv8lSRdjva++GT0VLXtHULdlzg8VjDnFZ3lfz5PWEOeIMk7Rj trjv82EZtrhLuLjHRCaG50OOm0hwPSk1J64R8O3HjSLdertmw7eyAYOo4RuWJguYMg5DRnBk WkRwrSuCn7UG+qVWZeKEsFKFOkynOs3pVbcbq1pxbhk3TRWCGRU5JolI4ohy/7JV1TVbjiDI HP/aVnm6NC8of26P40Pg8EdAhajZnHHjA7FrJXsy3cyIGqvg9os4rNkUWmrCfLLsZDHD8FnU mDW4+i+XlNFUPUYMrIKi9joBhu18ssf5i5Q= Message-ID: Date: Wed, 6 May 2020 06:45:46 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: <20200505131242.v6.1.Id96574f1f52479d7a2f3b866b8a0552ab8c03d7f@changeid> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 5/4/20 8:13 PM, Evan Benn wrote: > 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 > Reviewed-by: Guenter Roeck > --- > > Changes in v6: > - Don't use dt default > > Changes in v5: > - Change compatible to arm,smc-wdt > > Changes in v4: > - Add arm,smc-id property > > Changes in v3: > - Change name back to arm > > Changes in v2: > - Change name arm > mt8173 > > .../bindings/watchdog/arm-smc-wdt.yaml | 37 +++++++++++++++++++ > MAINTAINERS | 6 +++ > 2 files changed, 43 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..bec651541e0c8 > --- /dev/null > +++ b/Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml > @@ -0,0 +1,37 @@ > +# 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: > + - arm,smc-wdt > + arm,smc-id: > + allOf: > + - $ref: /schemas/types.yaml#/definitions/uint32 > + description: | > + The ATF smc function id used by the firmware. > + Defaults to 0x82003D06 if unset. > + > +required: > + - compatible > + > +examples: > + - | > + watchdog { > + compatible = "arm,smc-wdt"; > + arm,smc-id = <0x82003D06>; > + timeout-sec = <15>; > + }; > + > +... > diff --git a/MAINTAINERS b/MAINTAINERS > index b816a453b10eb..0f2b39767bfa9 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -1457,6 +1457,12 @@ S: Maintained > F: Documentation/devicetree/bindings/interrupt-controller/arm,vic.txt > F: drivers/irqchip/irq-vic.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 >