From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mout-p-101.mailbox.org (mout-p-101.mailbox.org [80.241.56.151]) (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 267FB6BB5B; Sun, 31 Aug 2025 19:13:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=80.241.56.151 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756667633; cv=none; b=RpDCntmu6O1QHJ30g+MQjv3T6/UZVkWa319erBo3D0v9rd3G81kIjggHnrNnw0P/u1rC8jAHQDDUDhcIOgg0aAxVbqqLtpr4xONwnZncWXlrSUmaiaJIZKgiDB/mps6GxifSVTaZwjoF193x6W9ZBAMwhxomOvoBCiLp/gP9ots= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756667633; c=relaxed/simple; bh=Zz4CiUJdKuLyzsVTw2sNXXRL7PXg2USqZieTjhOOOcw=; h=Message-ID:Date:MIME-Version:Subject:From:To:Cc:References: In-Reply-To:Content-Type; b=EE5yP621zuHLYBKDruTTlsC4U044acB6BBSTnI4Rjun0A5sYt43/YpqHJ2iufPcQJafvbrWmpDeTpkpf5upLKr0fUNvxjs8pz0itf6GAyrXD6DDZ97iGOz+Sus5oe/9pfSI1+sh+ZeyXpTWs/zZe7Jf3suuPha5uVzGyu4vTyGI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=mailbox.org; spf=pass smtp.mailfrom=mailbox.org; dkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org header.b=Art1loHR; arc=none smtp.client-ip=80.241.56.151 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=mailbox.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mailbox.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org header.b="Art1loHR" Received: from smtp2.mailbox.org (smtp2.mailbox.org [IPv6:2001:67c:2050:b231:465::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mout-p-101.mailbox.org (Postfix) with ESMTPS id 4cFM9m4kSzz9t9F; Sun, 31 Aug 2025 21:13:48 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1756667628; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=AycHrkg/XYaDgntfqnuFWHGSamym4f2b+3dyVHsp2q0=; b=Art1loHRFv8VlbHiEEu0hzi6VMeux4pKZQpv9cfS5Qr+xG4ryooYiTd64BdbbpJatbXuHf h8xA1VJcWBv4cAkXiwiuoge0yG1r57PL9+vUJYK2MCl/I164yQ9zRU3JML23a3lFUnWHTv c8C7eShj13ZPqDpO2pzbQLxs7yPL1GJcZ3k8bczeLVZQqSfKbXuzpj2WRuSLy6pRtYWZTb ImtCPUW+pS0uZgUX/VkVaxEoNeOb6A16EToiMWyzq7z9+Dmr6yLd578j+tUip8u1edbshe yI5Vj9TQ0G9Ljhr3qb3WzW2WYnnughwD7Xn8UNCwDpTk1gQuTafoSzTqSgAP3Q== Message-ID: <4aa7dcb5-fada-43dc-b9e1-b51bb328fc02@mailbox.org> Date: Sun, 31 Aug 2025 21:13:45 +0200 Precedence: bulk X-Mailing-List: linux-hwmon@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: [PATCH 1/2] dt-bindings: hwmon: pwm-fan: Document after shutdown fan settings From: Marek Vasut To: Rob Herring Cc: linux-hwmon@vger.kernel.org, Conor Dooley , Guenter Roeck , Jean Delvare , Krzysztof Kozlowski , devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org References: <20250629220301.935515-1-marek.vasut+renesas@mailbox.org> <20250708155058.GA477029-robh@kernel.org> <9ba974d7-456d-4255-bb74-cfd1998a43ae@mailbox.org> Content-Language: en-US In-Reply-To: <9ba974d7-456d-4255-bb74-cfd1998a43ae@mailbox.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-MBO-RS-ID: 5a7321e9d93bb22678b X-MBO-RS-META: ybeo1azraad6ggm91srmjbu1j6tmzrpy On 7/20/25 10:07 PM, Marek Vasut wrote: > On 7/8/25 5:50 PM, Rob Herring wrote: >> On Mon, Jun 30, 2025 at 12:02:08AM +0200, Marek Vasut wrote: >>> Document fan-shutdown-percent property, used to describe fan RPM in >>> percent >>> set during shutdown. This is used to keep the fan running at fixed >>> RPM after >>> the kernel shut down, which is useful on hardware that does keep heating >>> itself even after the kernel did shut down, for example from some >>> sort of >>> management core. >> >> This sounds more like "don't ever let the fan go below this RPM" or >> "don't ever turn off the fan". IOW, it is more than just shutdown. > > This property is literally only used during/after shutdown , this does > not limit or affect fan RPM during runtime in any way. How can we proceed here ?