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=-12.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_GIT 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 CB438C432BE for ; Thu, 2 Sep 2021 08:15:15 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9432660FC0 for ; Thu, 2 Sep 2021 08:15:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 9432660FC0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=nbW/1X3HCToilGrt3AfQiEYSz4XxUJim4+QQQQfgyo4=; b=pPJsH5DzMidRBL MlyEe9YQbm7HsUzkw0Gbvfiw0lCyUn0rqv8pKRSkmekwst25e1bdeenrL4KkR5sFo9O5dd+KS8tax bQdw4ncWkx5D1QU0WeJyBmNTIZjydGSwqFlBb1mT5Z3L+OM8VqMmSwxdcHnL2baKJyPnhkjtyPl1o 7LEGmOYOIVhPijndOYkFlWa53g/1fCD2gXj85OKkLVl9qtRVXw29bDlobbQMojOATPthnCi3Jy2d0 hXaopRE0H+W6N59b7m/vfX08kZl5sHPxARZ4CqXHwoqDFtqFt4KDynIXPCl7eajcpgn1sBTXvNdvt I9E0ugUdnEhWdmWQToTw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mLhsF-008w7B-JY; Thu, 02 Sep 2021 08:15:03 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mLhsB-008w53-4S; Thu, 02 Sep 2021 08:15:03 +0000 X-UUID: 282459114270442197eff7c478cea410-20210902 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=IZV4PK0aQPL002MqIv0l/ts9TyWjc+WVcj4cDbuTpUg=; b=Br1YIMvmliKZmuziOMosMQpEHGyOdWT23HqokclsXk1RR2M5FqpVWPFLeGr9vZYGePs0z6/8z5D/u36YS6os1lXKUBVAnzAQ80UfDHJgHDdUZWcRojMrwuODO4dHd5OySGNFBdCc43FKDUVrgzDv1vogOY7TJ9T9EabEG5Jsl2g=; X-UUID: 282459114270442197eff7c478cea410-20210902 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 802284627; Thu, 02 Sep 2021 01:14:52 -0700 Received: from mtkmbs05n1.mediatek.inc (172.21.101.15) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 2 Sep 2021 01:04:49 -0700 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs05n1.mediatek.inc (172.21.101.15) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 2 Sep 2021 16:04:48 +0800 Received: from localhost.localdomain (10.17.3.153) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 2 Sep 2021 16:04:47 +0800 From: Fengquan Chen To: Wim Van Sebroeck , Guenter Roeck , Matthias Brugger , , , , CC: , , , , , , Subject: [PATCH] watchdog: mtk: add disable_wdt_extrst support Date: Thu, 2 Sep 2021 16:04:41 +0800 Message-ID: <1630569881-6032-2-git-send-email-Fengquan.Chen@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1630569881-6032-1-git-send-email-Fengquan.Chen@mediatek.com> References: <1630569881-6032-1-git-send-email-Fengquan.Chen@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210902_011459_228789_665EE57C X-CRM114-Status: GOOD ( 12.98 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: "fengquan.chen" In some cases, we may need watchdog just to trigger an internal soc reset without sending any output signal. Provide a disable_wdt_extrst parameter for configuration. We can disable or enable it just by configuring dts. igned-off-by: Fengquan Chen --- drivers/watchdog/mtk_wdt.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/watchdog/mtk_wdt.c b/drivers/watchdog/mtk_wdt.c index 97ca993..4824c07 100644 --- a/drivers/watchdog/mtk_wdt.c +++ b/drivers/watchdog/mtk_wdt.c @@ -63,6 +63,7 @@ struct mtk_wdt_dev { void __iomem *wdt_base; spinlock_t lock; /* protects WDT_SWSYSRST reg */ struct reset_controller_dev rcdev; + bool disable_wdt_extrst; }; struct mtk_wdt_data { @@ -240,6 +241,8 @@ static int mtk_wdt_start(struct watchdog_device *wdt_dev) reg = ioread32(wdt_base + WDT_MODE); reg &= ~(WDT_MODE_IRQ_EN | WDT_MODE_DUAL_EN); + if (mtk_wdt->disable_wdt_extrst) + reg &= ~WDT_MODE_EXRST_EN; reg |= (WDT_MODE_EN | WDT_MODE_KEY); iowrite32(reg, wdt_base + WDT_MODE); @@ -309,6 +312,10 @@ static int mtk_wdt_probe(struct platform_device *pdev) if (err) return err; } + + mtk_wdt->disable_wdt_extrst = + of_property_read_bool(dev->of_node, "disable_extrst"); + return 0; } -- 1.8.1.1.dirty _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek