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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 9058FC433FE for ; Wed, 19 Oct 2022 12:17:41 +0000 (UTC) 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:Cc:To:Subject:Message-ID:Date:From: In-Reply-To:References:MIME-Version:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=AutvxIf81jW6Pv9GFeM/JsAyPr8bvqxuclFM3wJp/24=; b=s9ZD+MhDE1k3Yi BLaRBWoD+cwmhmsXb/OeQ8Doa7fd7b7bvYFzLxognx4PYqIdW8HEeVOBIi8uhQ3VEvcZK5I5b0oVk 7EA4Zl4MvC+1BlbfyMD2bhJ2wqxiITM5rP3TXqP4tTNLNd9FuSYnpjqf9iuR3UNWlwqfpbgpcLh4j u8qQQou2FsB19A0XO6m9/QnLRlWl8TqYUmXWZfWMDFwHKELC4w2WIWZrYaWcUDnPxlDF0bG5iKix5 58SzwbfZRuslnKZ57YzW9rhOBIb1Ph5MKP79Pe+3J3UfH5nn5d11jsLeJ+2ifP6AfMGMxeuG6hIvO zw6KRIb8y2gvf2sojlrA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ol7zz-001M27-8T; Wed, 19 Oct 2022 12:16:39 +0000 Received: from mail-pj1-x1035.google.com ([2607:f8b0:4864:20::1035]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ol7zw-001Lw2-Ai for linux-arm-kernel@lists.infradead.org; Wed, 19 Oct 2022 12:16:37 +0000 Received: by mail-pj1-x1035.google.com with SMTP id h14so183834pjv.4 for ; Wed, 19 Oct 2022 05:16:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=4UfKB24CuAxAVPOItr5Q5TcZjPxYaIsgbWsletLKpPk=; b=Glc3hntbf7+X4oSfg4Kt2hXTpwzHboRzXWIRZLJwz4UZOJFiv4lIYoTZGv1xIvZZvY vh0Uk4oXT88oCeBoN1bX6kcHeJ0o8SEPL89G/C0AdufsHZMkrWCybXu55IsjadpH7PHF 8TpiG3HEun4eTaZu3OUvfy+1+ur0oiCCttNcZmtTRIKZ7hruHJPbeOs0oEBn6YhKiaiO P6rXlGULIid+5i8S/NUo/wg21QOA9URUvlqfLbPm56opXGxgkEX5tm0iDNcFJSgetw6q puRVpsliBuPPrc05ECqf3no2BfTIycsDovb8w5KAs6JR60t7z8xihzpgZiAfl4w6ixFw gJ4Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=4UfKB24CuAxAVPOItr5Q5TcZjPxYaIsgbWsletLKpPk=; b=1MyUcfEdfLE0PVRFaYWEkE30/Ofoz+dkukYxG5I9zqxLMoXDT4co/TSdtZC/X/JbXR 3bfx6OhzAVkilxRCJiirXpF3TINlP6HgplsxzfQG2CZmO4Nv2kWkXw8YHhAacHz6psjS 7un0G+iA+6hx8Sh7okN6oM0WDAv3wrtz/UdnjMhXFvGttHyCRlINwexZC5UqykLPK6Fo jwMIfmovoIaHWT7LwZfb8ipRddaFqjsySgDR02bR+i1jVUaTH3QcJVqLGBS73ZhsRc4b rgINgOC2eTEmqvA7N0/+n0yEv04G4CPA1QIZNWFvZr3VH7k4ZvDJuUtqI2QzRq8Yi9nk zg1g== X-Gm-Message-State: ACrzQf0j+LhmHys0EXPJpwG6YJEE7Gau+IpiEFKET7RqEWC7K2aF7jNp 8M9Ryj9Ke9C/JeyzysCE6H9cW8V3L0bhB3NwUo8= X-Google-Smtp-Source: AMsMyM6TKCzZvl3GD8vsawCX4Gt1qWFWL9hwNUxw9F0URCBmpYuIu/BTt25IwHFdfqFKzFZiI76GmTJ5ocEI69dvzFk= X-Received: by 2002:a17:902:d2cf:b0:17f:7b65:862f with SMTP id n15-20020a170902d2cf00b0017f7b65862fmr8131289plc.168.1666181791980; Wed, 19 Oct 2022 05:16:31 -0700 (PDT) MIME-Version: 1.0 References: <20221019111714.1953262-1-andrej.picej@norik.com> In-Reply-To: <20221019111714.1953262-1-andrej.picej@norik.com> From: Fabio Estevam Date: Wed, 19 Oct 2022 09:16:23 -0300 Message-ID: Subject: Re: [PATCH 0/3] Suspending i.MX watchdog in WAIT mode To: Andrej Picej Cc: linux-watchdog@vger.kernel.org, shawnguo@kernel.org, linux@roeck-us.net, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-imx@nxp.com, kernel@pengutronix.de, s.hauer@pengutronix.de, wim@linux-watchdog.org, robh+dt@kernel.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221019_051636_383385_E76A84E4 X-CRM114-Status: GOOD ( 13.18 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Andrej, On Wed, Oct 19, 2022 at 8:17 AM Andrej Picej wrote: > > The i.MX6 watchdog can't be stopped once started. This means that > special hardware suspend needs to be configured when the device enters > low-power modes. > Usually i.MX devices have two bits which deal with this: > - WDZST bit disables the timer in "deeper" low power modes and > - WDW bit disables the timer in "WAIT" mode which corresponds with > Linux's "freeze" low-power mode. > > WDZST bit support is already in place since 1a9c5efa576e ("watchdog: imx2_wdt: disable watchdog timer during low power mode"). > WDW bit is not common for all imx2-wdt supported devices, therefore use > a new device-tree property "fsl,suspend-in-wait" which suspends the > watchdog in "WAIT" mode. > > Andrej Picej (3): > watchdog: imx2_wdg: suspend watchdog in WAIT mode > dt-bindings: watchdog: fsl-imx: document suspend in wait mode > ARM: dts: imx6ul/ull: suspend i.MX6UL watchdog in wait mode For the series: Reviewed-by: Fabio Estevam _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel 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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 896CCC433FE for ; Wed, 19 Oct 2022 12:38:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233245AbiJSMik (ORCPT ); Wed, 19 Oct 2022 08:38:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51842 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231818AbiJSMiH (ORCPT ); Wed, 19 Oct 2022 08:38:07 -0400 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C3BA11D0D46; Wed, 19 Oct 2022 05:18:38 -0700 (PDT) Received: by mail-pj1-x102b.google.com with SMTP id cl1so16634322pjb.1; Wed, 19 Oct 2022 05:18:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=4UfKB24CuAxAVPOItr5Q5TcZjPxYaIsgbWsletLKpPk=; b=Glc3hntbf7+X4oSfg4Kt2hXTpwzHboRzXWIRZLJwz4UZOJFiv4lIYoTZGv1xIvZZvY vh0Uk4oXT88oCeBoN1bX6kcHeJ0o8SEPL89G/C0AdufsHZMkrWCybXu55IsjadpH7PHF 8TpiG3HEun4eTaZu3OUvfy+1+ur0oiCCttNcZmtTRIKZ7hruHJPbeOs0oEBn6YhKiaiO P6rXlGULIid+5i8S/NUo/wg21QOA9URUvlqfLbPm56opXGxgkEX5tm0iDNcFJSgetw6q puRVpsliBuPPrc05ECqf3no2BfTIycsDovb8w5KAs6JR60t7z8xihzpgZiAfl4w6ixFw gJ4Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=4UfKB24CuAxAVPOItr5Q5TcZjPxYaIsgbWsletLKpPk=; b=kHhGeQQI2k/RqOFcUOYqSzGNvTBskGk8bVuuLbaPipNvqpdZeIb2mxCPgL5EjGVcD4 +Ezs/SVNXMSq+yRY6aJReNnkmbYF+EWiwnEXe8XA2NFm5Rs2Q6axFmjnAd11+5Yc1eLx /5KEET05mOXp19S3t28udTiHZ56J7MRBJRr2KWlrmiXKzYg0Zitb5yJSmtbS50qmcDEA 8G2XkPRU0qE/XTaTGHNHr56Er2tjYi/SC6ZozhowG7ffkg6gwnORxKFnJCZLOlRuDCpy D/ntde0y/8qkPc9PUdnPZJpVPRgWl010MOfYireUIm2ffnmg7kgz21JNngDcWbRwAOqP vLcg== X-Gm-Message-State: ACrzQf1g8nkAkfS59RAHjb0Kx1BDs8Y5kCcROvSwQNpvDqysuuWmbrIl 4jNBeHEnn6bfJDlQnHTic7g/X7vHBWj9XCU4xhc= X-Google-Smtp-Source: AMsMyM6TKCzZvl3GD8vsawCX4Gt1qWFWL9hwNUxw9F0URCBmpYuIu/BTt25IwHFdfqFKzFZiI76GmTJ5ocEI69dvzFk= X-Received: by 2002:a17:902:d2cf:b0:17f:7b65:862f with SMTP id n15-20020a170902d2cf00b0017f7b65862fmr8131289plc.168.1666181791980; Wed, 19 Oct 2022 05:16:31 -0700 (PDT) MIME-Version: 1.0 References: <20221019111714.1953262-1-andrej.picej@norik.com> In-Reply-To: <20221019111714.1953262-1-andrej.picej@norik.com> From: Fabio Estevam Date: Wed, 19 Oct 2022 09:16:23 -0300 Message-ID: Subject: Re: [PATCH 0/3] Suspending i.MX watchdog in WAIT mode To: Andrej Picej Cc: linux-watchdog@vger.kernel.org, shawnguo@kernel.org, linux@roeck-us.net, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-imx@nxp.com, kernel@pengutronix.de, s.hauer@pengutronix.de, wim@linux-watchdog.org, robh+dt@kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Andrej, On Wed, Oct 19, 2022 at 8:17 AM Andrej Picej wrote: > > The i.MX6 watchdog can't be stopped once started. This means that > special hardware suspend needs to be configured when the device enters > low-power modes. > Usually i.MX devices have two bits which deal with this: > - WDZST bit disables the timer in "deeper" low power modes and > - WDW bit disables the timer in "WAIT" mode which corresponds with > Linux's "freeze" low-power mode. > > WDZST bit support is already in place since 1a9c5efa576e ("watchdog: imx2_wdt: disable watchdog timer during low power mode"). > WDW bit is not common for all imx2-wdt supported devices, therefore use > a new device-tree property "fsl,suspend-in-wait" which suspends the > watchdog in "WAIT" mode. > > Andrej Picej (3): > watchdog: imx2_wdg: suspend watchdog in WAIT mode > dt-bindings: watchdog: fsl-imx: document suspend in wait mode > ARM: dts: imx6ul/ull: suspend i.MX6UL watchdog in wait mode For the series: Reviewed-by: Fabio Estevam