From nobody Sat Sep 21 19:36:19 2024 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C127AC04A68 for ; Thu, 28 Jul 2022 15:39:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230341AbiG1PjY (ORCPT ); Thu, 28 Jul 2022 11:39:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51362 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229942AbiG1PjV (ORCPT ); Thu, 28 Jul 2022 11:39:21 -0400 Received: from mail-pf1-x436.google.com (mail-pf1-x436.google.com [IPv6:2607:f8b0:4864:20::436]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9D117558EA for ; Thu, 28 Jul 2022 08:39:20 -0700 (PDT) Received: by mail-pf1-x436.google.com with SMTP id e16so2227880pfm.11 for ; Thu, 28 Jul 2022 08:39:20 -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:mime-version :content-transfer-encoding; bh=CqSVW/Ueq6eSKuuwfz5Rq7CFA5+wXLwAWIYxDZSpO44=; b=Mr16A+PaQ/QvRlFTof2HXImkabcfMVdsACcFH/i8ptMJGW1+/4dSaqJ2BBBZbr8sj1 T/xZiOYHH9TxqQMvAbuFv+TD6zRIiIZWvOjT+sFZppRity0mktOZJF6Gn+Hajj67uf5z 9Pv1twnvGQC0/BWmgqg9CgZVs82EDjtuTntDk= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=CqSVW/Ueq6eSKuuwfz5Rq7CFA5+wXLwAWIYxDZSpO44=; b=T+yYjbLP/6JStr+R32MSBqO6G8yY647V+TOOpKw9NiAOwMq+hC3tNqcUTFHqx2z85h y3zJi5h4IiPI2+ts2fuwoOSokbGFPOWnhr6rzyAKCavD3jKANl6OOhUqfv8KTbHJbF8p lhYboRKsw++Zlfah8zEAXDJ9Nfjd1NDQLQY+GRo7yIXonpwZU9OPOdb8xGSKVAOO4GNF tUf/mGyYjJUtr80mV/Sh/a5RxKk2t74iL782Puqd3U0wh3Ji5Sbwfe5+pkrPPZGJmJni 1S9RuStxvBTvxFKITGPZ6z4QQTc3iJfh5unuJZ9gPNWmB18Im7AVWe1wxsRUkoO5tbk4 /FAw== X-Gm-Message-State: AJIora+boUSTu1+f1WhmVH9BsZ47UaeiBy8NbCpNZRvbjlv5dbya2upP upja2BLKuxXhgGHpiGB+ctV/2tY9vre0xQ== X-Google-Smtp-Source: AGRyM1u7RU0iN+DYfRvTGeLIPu8TkCTXOx9aEqO/5m1pJbFtITJo9P6lOu6fitsB9UUSmxcut8h8eg== X-Received: by 2002:a63:1c24:0:b0:41b:40c5:f114 with SMTP id c36-20020a631c24000000b0041b40c5f114mr8543848pgc.3.1659022760163; Thu, 28 Jul 2022 08:39:20 -0700 (PDT) Received: from treapking.tpe.corp.google.com ([2401:fa00:1:10:7c0f:5963:f38d:5645]) by smtp.gmail.com with ESMTPSA id n5-20020a170902e54500b0016c0593876csm1462148plf.157.2022.07.28.08.39.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Jul 2022 08:39:19 -0700 (PDT) From: Pin-yen Lin To: Matthias Brugger , linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Eizan Miyamoto , Evan Benn , Hsin-Yi Wang , Pin-yen Lin , Krzysztof Kozlowski , Rob Herring , devicetree@vger.kernel.org Subject: [PATCH v3] arm64: dts: mt8173-oak: Switch to SMC watchdog Date: Thu, 28 Jul 2022 23:39:13 +0800 Message-Id: <20220728153913.2652153-1-treapking@chromium.org> X-Mailer: git-send-email 2.37.1.359.gd136c6c3e2-goog MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Switch to SMC watchdog because we need direct control of HW watchdog registers from kernel. The corresponding firmware was uploaded in https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/3405. Signed-off-by: Pin-yen Lin --- Changes in v3: - Remove /delete-node/ and create a new node for SMC watchdog. Changes in v2: - Move the modifications to mt8173-elm.dtsi and add some comments. arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi b/arch/arm64/boot= /dts/mediatek/mt8173-elm.dtsi index e21feb85d822..fc8203297bac 100644 --- a/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi @@ -161,6 +161,19 @@ hdmi_connector_in: endpoint { }; }; }; + + + smc_watchdog { + compatible =3D "arm,smc-wdt"; + }; +}; + +/* + * Disable the original MMIO watch dog and switch to the SMC watchdog, whi= ch + * operates on the same MMIO. + */ +&watchdog { + status =3D "disabled"; }; =20 &mfg_async { --=20 2.37.1.359.gd136c6c3e2-goog