From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0C65E37160; Mon, 14 Jul 2025 06:04:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752473093; cv=none; b=ne+16o5jSpwaxLy0lgXYOAhG0QOd4j5Kkw1N6Th+FmEKZU1s3/xMa6F3L87q411xSUhYe22Njhe3LVWik1MwljQgaRdE6EajxkS55fEHM2BbBLPJCcZzPZ2D6UM8V/H3cagkYuwW5nMTHagk7UPpTHQjlhMBxO7ZeGSAU3FMoOI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752473093; c=relaxed/simple; bh=GFXacdcqis+5a8r516CEjGxLPeFuvYwW7tVWRoTsDDk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=d9inHu0qboqfE/QCeVK3uzdxbP2Ydoy1ou147uD4w1swHGnfHRLrd1qoNt0tDo2LN+QfN3vcyuZ/RLuzfJsd8PR48z8VvFgJvhgFrOraA+U9Jb2lG+cjVlvmauP242le/UV8s57EUjjd5L1vEWt6ePcGz5GW5EOasot6RQoWcNI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=CbYPLUat; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="CbYPLUat" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 21373C4CEED; Mon, 14 Jul 2025 06:04:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1752473092; bh=GFXacdcqis+5a8r516CEjGxLPeFuvYwW7tVWRoTsDDk=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=CbYPLUatBaOkxX/NnFJbPMpp+IZu2PCO/xuZC6fKOWHCFslNoWoR5u2dmfU22VvXP lGOmdefgHoYpQfS8RjmCrNNDCw2z1BvIR+0ZW+EAlfYqb7vpaqvdDmoh7VrMd/rv1/ dN8MqxTE4VGniZfvJcZJZiefXRu+jM6ougdUnJwxbLPht1TVofpBamTkotlME/2aC7 tJIh5uQZUAzjd1xNHQEpD6K/A3uU6kMMzyzW6uUv/jffztPuG77gIaxxQSVG1UCV0D wN2QjO4XYcqiSmudsY0HjocDzfFrZHgsHZ8Jf9tlCuynCCF1aIiSuw9VUluen0Y4tb VLZO254oR4hZQ== Message-ID: <422fc81c-81d7-4473-92b6-9d112e6e247a@kernel.org> Date: Mon, 14 Jul 2025 08:04:47 +0200 Precedence: bulk X-Mailing-List: linux-watchdog@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 RESEND 3/5] watchdog: s3c2410_wdt: Increase max timeout value of watchdog To: Sangwook Shin , alim.akhtar@samsung.com, wim@linux-watchdog.org, linux@roeck-us.net Cc: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-kernel@vger.kernel.org References: <20250714055440.3138135-1-sw617.shin@samsung.com> <20250714055440.3138135-4-sw617.shin@samsung.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 14/07/2025 07:54, Sangwook Shin wrote: > Increase max_timeout value from 55s to 3664647s (1017h 57min 27s) with > 38400000 frequency system if the system has 32-bit WTCNT register. > > cat /sys/devices/platform/10060000.watchdog_cl0/watchdog/watchdog0/max_timeout > 3664647 > > [ 0.302473] s3c2410-wdt 10060000.watchdog_cl0: Heartbeat: count=1099394100000, timeout=3664647, freq=300000 > [ 0.302479] s3c2410-wdt 10060000.watchdog_cl0: Heartbeat: timeout=3664647, divisor=256, count=1099394100000 (fff8feac) > [ 0.302510] s3c2410-wdt 10060000.watchdog_cl0: starting watchdog timer > [ 0.302722] s3c2410-wdt 10060000.watchdog_cl0: watchdog active, reset enabled, irq disabled > > If system has 32-bit WTCNT, add QUIRK_HAS_32BIT_MAXCNT to its quirk flags, then > it will operation with 32-bit counter. If not, with 16-bit counter like previous. I claim that this patch fixes nothing, because there is no user of QUIRK_HAS_32BIT_MAXCNT. Best regards, Krzysztof