From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-176.mta1.migadu.com (out-176.mta1.migadu.com [95.215.58.176]) (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 3B1C63DDAE3 for ; Mon, 27 Jul 2026 07:26:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.176 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785137184; cv=none; b=gkyeP/ZLtLS86evKlFNYsY5lJJfq9zXoZ1bLsET4B6ZNfGpWCuTlXhmq4EqzrXvRKYjTsIVnPL6JXSWKNQwyn185rm8fnmVn4fZZY27j/JokxcJDUvT03jePXizoqucXVknpZMN5mhq9sZvEPdPE6rlBgsM/74pWtIVHJ3acbCs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785137184; c=relaxed/simple; bh=OSMOMMdhr3sgJudgtPi3Zf5hGhHVJV2Gi7WpSc6PQUc=; h=Mime-Version:Content-Type:Date:Message-Id:Subject:From:To:Cc: In-Reply-To:References; b=qy8CgwsAdSZWQgNYfczUidCBtRRGn+rJhMwjZbjCJ4VTNVud6IBav6uz15pNyBVWakVlG6r8R301z1sI9yrHvKWngj4q3do9TqDMx8Q3UrVJeMKX3LDX+sGQw6i24VtIzn1Cp/vlptYv4e7Kx7/4aFUXSBrDjhym3jDIm5iq0AY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=vK2cbbSs; arc=none smtp.client-ip=95.215.58.176 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="vK2cbbSs" Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1785137171; 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=UmJ8uGmDc0hqwz3dbUX6RW8a5ofURnJwzsVN39eibdM=; b=vK2cbbSs1DT5vRr9+SQd/GLIMXVCOOZW/EgtwXudjf1h519XwUU78l8B2/r/V10rbEFFjr 0gBHz8Ht0x0AKJmO+lozdEzYmuV6iKDuVEUBLMAax/SUMTnpqCai2zt34S2/2J28HLDH01 HhTpZW/I1hP3acxWKuHAZ+vOxi0d8l4= Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Mon, 27 Jul 2026 00:26:00 -0700 Message-Id: Subject: Re: [PATCH v2 3/6] dt-bindings: hwmon: Add Sensylink CTF2301 X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: "Troy Mitchell" To: "Troy Mitchell" , "Rob Herring" , "Krzysztof Kozlowski" , "Conor Dooley" , "Guenter Roeck" , "Paul Walmsley" , "Palmer Dabbelt" , "Albert Ou" , "Alexandre Ghiti" , "Yixun Lan" , "Jonathan Corbet" , "Shuah Khan" Cc: , , , , , In-Reply-To: <20260721-handbook-dancing-0c6805fbc94e@spud> References: <20260721-ctl2301-v2-0-ef5fb342872a@linux.dev> <20260721-ctl2301-v2-3-ef5fb342872a@linux.dev> <20260721-handbook-dancing-0c6805fbc94e@spud> X-Migadu-Flow: FLOW_OUT > On Tue, Jul 21, 2026 at 02:48:29AM -0700, Troy Mitchell wrote: >> Add the Sensylink CTF2301 temperature sensor and fan controller to the >> LM63 family binding. The chip follows the LM63 register model and can >> provide a thermal cooling device when #cooling-cells is present. > > Commit message should explain why a fallback compatible is not suitable. The CTF2301 shares the overall register layout with LM63, but it is not fully compatible. In particular, it uses different conversion-rate encodings, extended local-temperature registers, additional fan lookup table entries, and device-specific PWM and ALERT/TACH configuration. An older driver matching the "national,lm63" fallback would therefore not operate the device correctly. I will explain why a fallback compatible is not suitable in the commit message in the next version. - Troy