From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from carl-amd.amd.com (unknown [218.32.81.133]) (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 7AFE32D837C; Fri, 6 Feb 2026 06:03:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=218.32.81.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770357783; cv=none; b=M0g+EoEfmCWnvWh8Au8/B4cOYpgPpHVwoCincmXI81ApKyOPbvuoj/kOWYbL47JHcDs1yXLID/P5jGUGQ2xRgLJoJULZo6dp2SDkccw10w4ibmvo4ejkvwO8xqitZyzobNfDZaYXxh+8OsTf8P3Rzv1rcqELrdtXve7xWuHjZew= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770357783; c=relaxed/simple; bh=5ni1MN+rQF2mPjhb+eQuAuhxFYWrWeUb+IOk8x1yHR8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=i2Ti2b9pLBBtqyjzjP1TiPvEMJdNGscRSMEv1NjSzFnOeOq9gdBwUlSIvxNP2k9n30bitrJfE/nYg2ajuNSue/dORnYcAah7ltTvv7dR46KwSnkeG9VpzGeVrRhNHqHAJVt/4he6M8qqZ6lHPL59KSk4Cd5tdhJptVHdfWbiXqs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=amd.com; spf=fail smtp.mailfrom=amd.com; arc=none smtp.client-ip=218.32.81.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=amd.com Received: from carl-amd.amd.com (localhost [127.0.0.1]) by carl-amd.amd.com (8.15.2/8.15.2/Debian-22ubuntu3) with ESMTP id 6165sKnR1007604; Fri, 6 Feb 2026 13:54:20 +0800 Received: (from carl@localhost) by carl-amd.amd.com (8.15.2/8.15.2/Submit) id 6165sIx21007603; Fri, 6 Feb 2026 13:54:18 +0800 X-Authentication-Warning: carl-amd.amd.com: carl set sender to carl.lee@amd.com using -f Date: Fri, 6 Feb 2026 13:54:18 +0800 From: Carl Lee To: Guenter Roeck Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Charles Hsu , linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, peter.shen@amd.com, colin.huang2@amd.com Subject: Re: [PATCH v2 1/3] dt-bindings: hwmon: pmbus: mpq8785: add MPQ8786 support Message-ID: References: <20260205-dt-bindings-hwmon-pmbus-mpq8785-add-mpq8786-support-v2-0-3744cd9b2850@amd.com> <20260205-dt-bindings-hwmon-pmbus-mpq8785-add-mpq8786-support-v2-1-3744cd9b2850@amd.com> <20260205-cordial-warping-pronghorn-aeebe7@quoll> <79a6a2bc-4894-4ff9-8a11-5ed71195cf09@roeck-us.net> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <79a6a2bc-4894-4ff9-8a11-5ed71195cf09@roeck-us.net> On Thu, Feb 05, 2026 at 08:17:07AM -0800, Guenter Roeck wrote: > On Thu, Feb 05, 2026 at 02:46:29PM +0100, Krzysztof Kozlowski wrote: > > On Thu, Feb 05, 2026 at 06:01:37PM +0800, Carl Lee wrote: > > > Add device type support for MPQ8786 > > > > > > Signed-off-by: Carl Lee > > > --- > > > Documentation/devicetree/bindings/hwmon/pmbus/mps,mpq8785.yaml | 5 ++++- > > > 1 file changed, 4 insertions(+), 1 deletion(-) > > > > > > diff --git a/Documentation/devicetree/bindings/hwmon/pmbus/mps,mpq8785.yaml b/Documentation/devicetree/bindings/hwmon/pmbus/mps,mpq8785.yaml > > > index 90970a0433e9..aec7397a29f9 100644 > > > --- a/Documentation/devicetree/bindings/hwmon/pmbus/mps,mpq8785.yaml > > > +++ b/Documentation/devicetree/bindings/hwmon/pmbus/mps,mpq8785.yaml > > > @@ -19,6 +19,7 @@ properties: > > > - mps,mpm3695-25 > > > - mps,mpm82504 > > > - mps,mpq8785 > > > + - mps,mpq8786 > > > > Your driver code says they are the same, so compatible. Express it with > > fallback or provide real rationale in commit msg. > > > > Agreed. The mpq8785 datasheet is public, but the mpq8786 datasheet isn't. > That makes it all but impossible to determine if there are indeed no > notable differences between the chips. > > Guenter Agreed. There is no chip-specific difference in the driver code to justify separate MPQ8786 support. Therefore, we rely on MPQ8785 support.