From nobody Tue Feb 10 01:46:52 2026 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 7A35729BDBA; Tue, 3 Feb 2026 08:43:21 +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=1770108201; cv=none; b=uUydRw/5QEDGbuV9u+ZsegxTjxYJZ4ASzTO/PhE5z415E4TTaORVNOww3nox0Cyc3d8kufLRPJ4MLRdi5yQpBivjE4i6GyC2yZ9ABeRaGQ5UmK4BYQbreJxCcvrI1XE3sb8AWp4Ce2ltYPI41pkgGJ6moccLtUahRDRkHRBinGY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770108201; c=relaxed/simple; bh=hV/ruXO7UDFq1C/AfF42iwnnxPKhJd1hDbMI3qPFY2g=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=fUrI6KjU65VBCnBwWOsssQiefhXU5q1D9kaJ+fho8Y8bRnNOLJubtvBEl9wEwIaoxPPfYaEKGHOiQyVJnm8AJ8JA6wGacVMOiLR2s7ctTBiupw5e2cvmx5l0IWiPMBeQcPd9RHQdOv+mK3eMH6ynfUXS4SAW/3QJTL4c1jpjg6g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HNMpFlXi; 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="HNMpFlXi" Received: by smtp.kernel.org (Postfix) with ESMTPS id 0BFF5C116D0; Tue, 3 Feb 2026 08:43:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1770108201; bh=hV/ruXO7UDFq1C/AfF42iwnnxPKhJd1hDbMI3qPFY2g=; h=From:Date:Subject:To:Cc:Reply-To:From; b=HNMpFlXi626HBEfHhN/FmLuIFbBREWixMW8MQcl0CUYhF02R2ckqtWz/rAUfvmsMj vscK5rxRgMe2ulQePnCO/mvNdVGc20+SI3rOxZuggNhrYHfvkAk/UpwnX4As+lLHKH 9kNb/695CpxfNt8KI/ozflIBZ0GYJ0Pzs+C+uibfhB72MqFBwHLrZuPpMjr+jhK6Rq 8TqHf+36sGJZ6zBqWcLTL38EBoRVT5O/loxyK4vP5LccMpqZcX66DPAWv9edbc0nsK e5jG9/xgjCpPzEQ8dJMQcHHEUpnRysT0a4tKPL02PlckV6++FChjzbZA9/MsKxZwoV FBKeNlt6iSrjw== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id E0404E8305D; Tue, 3 Feb 2026 08:43:20 +0000 (UTC) From: Carl Lee via B4 Relay Date: Tue, 03 Feb 2026 16:42:58 +0800 Subject: [PATCH] hwmon: pmbus: mpq8785: add support for MPQ8786 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260203-hwmon-pmbus-mpq8785-add-support-for-mpq8786-v1-1-9ff8c7c50242@amd.com> X-B4-Tracking: v=1; b=H4sIABG1gWkC/y2NQQ7CIBAAv9Ls2U0opFD9ivHQlsVyAFbWqknTv 0uMx5nDzA5CNZLApduh0itKLLlBf+pgWad8J4y+MWilrdLK4PpOJSOneRNM/BjdOODkPcrGXOo TQ6l/b3EgZxZ3tnPoDbQiVwrx87tdb8fxBYEl4UV9AAAA X-Change-ID: 20260203-hwmon-pmbus-mpq8785-add-support-for-mpq8786-5e73c796bf13 To: Guenter Roeck Cc: linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org, carl.lee@amd.com, peter.shen@amd.com, colin.huang2@amd.com X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1770108199; l=3052; i=carl.lee@amd.com; s=20260203; h=from:subject:message-id; bh=+PacOTgLkW0YQft+ipYSb3SkImmHU2R/2tpMwxSBWcI=; b=Yd7JCbyvZZMcmdLFPfzl/4O8EFB4TwLDrohyaFVZSwFABjGUoyqWynWW9RheKLDA61zIxDfC6 9QbRfn67CNzAP/D9FOWXiTut46X8g4qZloJPjrNhBkgPZDbKrh6o7Km X-Developer-Key: i=carl.lee@amd.com; a=ed25519; pk=pyq7QaQvoxMg806KVkRwpCbiah+7ncWr4MBpK1AEyjA= X-Endpoint-Received: by B4 Relay for carl.lee@amd.com/20260203 with auth_id=623 X-Original-From: Carl Lee Reply-To: carl.lee@amd.com From: Carl Lee Add support for the Monolithic Power Systems MPQ8786 digital voltage regulator. Signed-off-by: Carl Lee --- Documentation/hwmon/mpq8785.rst | 7 +++++++ drivers/hwmon/pmbus/mpq8785.c | 6 +++++- 2 files changed, 12 insertions(+), 1 deletion(-) diff --git a/Documentation/hwmon/mpq8785.rst b/Documentation/hwmon/mpq8785.= rst index 198d5dfd7c30..39306033990f 100644 --- a/Documentation/hwmon/mpq8785.rst +++ b/Documentation/hwmon/mpq8785.rst @@ -8,6 +8,7 @@ Supported chips: * MPS MPM3695 family * MPS MPM82504 * MPS MPQ8785 + * MPS MPQ8786 =20 Prefix: 'mpq8785' =20 @@ -38,6 +39,12 @@ buck converter. The MPQ8785 offers a very compact soluti= on that achieves up to wide input supply range. The MPQ8785 operates at high efficiency over a wi= de output current load range. =20 +The MPQ8786 is a fully integrated, PMBus-compatible, high-frequency, synch= ronous +buck converter. The device shares the same PMBus interface and register be= havior +as the MPQ8785, but provides a lower output current capability of up to 25= A per +phase. It offers excellent load and line regulation over a wide input supp= ly +range and operates at high efficiency over a wide output current load rang= e. + The PMBus interface provides converter configurations and key parameters monitoring. =20 diff --git a/drivers/hwmon/pmbus/mpq8785.c b/drivers/hwmon/pmbus/mpq8785.c index 1f56aaf4dde8..f35534836cb8 100644 --- a/drivers/hwmon/pmbus/mpq8785.c +++ b/drivers/hwmon/pmbus/mpq8785.c @@ -12,13 +12,14 @@ =20 #define MPM82504_READ_TEMPERATURE_1_SIGN_POS 9 =20 -enum chips { mpm3695, mpm3695_25, mpm82504, mpq8785 }; +enum chips { mpm3695, mpm3695_25, mpm82504, mpq8785, mpq8786 }; =20 static u16 voltage_scale_loop_max_val[] =3D { [mpm3695] =3D GENMASK(9, 0), [mpm3695_25] =3D GENMASK(11, 0), [mpm82504] =3D GENMASK(9, 0), [mpq8785] =3D GENMASK(10, 0), + [mpq8786] =3D GENMASK(10, 0), }; =20 static int mpq8785_identify(struct i2c_client *client, @@ -87,6 +88,7 @@ static const struct i2c_device_id mpq8785_id[] =3D { { "mpm3695-25", mpm3695_25 }, { "mpm82504", mpm82504 }, { "mpq8785", mpq8785 }, + { "mpq8786", mpq8786 }, { }, }; MODULE_DEVICE_TABLE(i2c, mpq8785_id); @@ -96,6 +98,7 @@ static const struct of_device_id __maybe_unused mpq8785_o= f_match[] =3D { { .compatible =3D "mps,mpm3695-25", .data =3D (void *)mpm3695_25 }, { .compatible =3D "mps,mpm82504", .data =3D (void *)mpm82504 }, { .compatible =3D "mps,mpq8785", .data =3D (void *)mpq8785 }, + { .compatible =3D "mps,mpq8786", .data =3D (void *)mpq8786 }, {} }; MODULE_DEVICE_TABLE(of, mpq8785_of_match); @@ -128,6 +131,7 @@ static int mpq8785_probe(struct i2c_client *client) info->read_word_data =3D mpm82504_read_word_data; break; case mpq8785: + case mpq8786: info->identify =3D mpq8785_identify; break; default: --- base-commit: 4c87cdd0328495759f6e9f9f4e1e53ef8032a76f change-id: 20260203-hwmon-pmbus-mpq8785-add-support-for-mpq8786-5e73c796bf13 Best regards, --=20 Carl Lee