From nobody Mon Feb 9 10:25:52 2026 Received: from mail-wr1-f44.google.com (mail-wr1-f44.google.com [209.85.221.44]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 82BBF211A3F; Mon, 28 Apr 2025 22:15:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.44 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745878521; cv=none; b=c2DenH0l+J/8rP9wY50m5NaWdY8o+El2/fh/w1rOrSFhqKKA89iXHmE4vtvhVBiAWzY6akSGs2oG2HxJoXafBkB08FwVobsTAF5SSFyr59+eAjMNxZ725Cb4Usuz6Lsn+drWCcDt85Ap3U2r47nyr+hMtyy+3QMNjWhipdRvL50= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745878521; c=relaxed/simple; bh=iQepXZEPjfzGQ/6jgTqtmE1rTQYbFOMAxN/6PqP1pgA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=CtpKXYCnmFhGOfwAoMqymjci55l8pXs8rK1S2iUK9GmFOmEnViUbOyEpZ/dLK6cI5hssJ+UYRnLUj7rNsJhSZNi6fCWDNY08IQ1pxDCRttjqdWeReMkhEOgfviXm6sNWublYZSSx4QU6mEbaXueOAgj0ryOGtgHIMJZwAAE2wks= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Abe/g02h; arc=none smtp.client-ip=209.85.221.44 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Abe/g02h" Received: by mail-wr1-f44.google.com with SMTP id ffacd0b85a97d-39d83782ef6so4371066f8f.0; Mon, 28 Apr 2025 15:15:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1745878517; x=1746483317; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=kBJBrNw+0Dr8OQS2KdR4f/1hCJGJxhX6fU1gS+2VX1k=; b=Abe/g02h657W7I2L8ECkYG4Dq6owLpUKcIMsgkDJFgRppnCdUxqfZAkinc9M5+D+ib ThS93pOWbyT93CRIR/Yta/LqOwMRTrglJrH+MWvYgN/+xQ0Q0ImJesNoges6DnBTLJka o1XZKS5eUWKF3yvUf/J7jEXzWPuXMa7aG5+su1bgzWNKfRagz5fB5Dwa9d/tTzEJc92R CQzu75uLXWlrrAe+z+66f7hgIE77pEogR9OAtHuy3pDtlxM7EQGAejwpYeIJdAN8inF8 E/q4LQPdQxPQI+lP0m+MHBCZRat/9E9jVRnvzEHyPf+DOGXrQ5ZjUbHv/MQisMDyhEoE L9zg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1745878517; x=1746483317; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=kBJBrNw+0Dr8OQS2KdR4f/1hCJGJxhX6fU1gS+2VX1k=; b=H8Us4UlzvMeUoMETvj5GaArpyz7wqQ0nECZxFrCkWsPkBfqtuVCcfgMsENo9qpk7X0 /MAfCzt81TPNGszFONb4g78tyHnHhAMXj+scohjSz1p0lIkCR6wBDSIk6GqHIUjqiGiq huvlzQLuy4raFdefM+bCmWhm9WOvk/dTSowCnE42q3ZMKX6G/yCzoWSLsVwY8jNEcRPW TO1E8erqGWqKJOMl0PJypqf0lCWuNcxS5WmhqYg5qpFjsn3E9/z/SX4JtWNfwWJsHSgq huPYmhBkQ9EQ3OF6gMsYsR6H/rnewg3+UxWTTajK96gQLMEI2Oc7tBohu2FEarrvEdVA Uiqg== X-Forwarded-Encrypted: i=1; AJvYcCUorINEV9PU52GTXZY+x79eM3p1ehpZEZRiJeajq0fl4Bk4rsEATRI/4QoX+Yerq28YB7zqx8pUafJv@vger.kernel.org, AJvYcCVUOZCSzIIbHQtslnBO6ZBiLsXuR3Rspo5Lu4uOTxsRQFRVdRzLrWz0vpNhzUNE12TaXgbiTkpNbs1W@vger.kernel.org, AJvYcCX+NMezMxT/6a6B9WOR0ikwEFqbOkpkWnFz88GJwMuyCDy82d5UiKKZeOUQSGIkSZ/z9d+IKxBY96DLqLVB@vger.kernel.org X-Gm-Message-State: AOJu0YykvJQjhcjvLyhAGy+tMYKA1u4wFCGBCLhloC72s4k6jguKcgyi gGouavWae3OFWvQSrUQp+gbGCAC3vsTITAlgvjV+ctj+FHXLQkjhvI7GxyDn X-Gm-Gg: ASbGncvf9X32lu9QQevxyL1fM5k6DMBf+2FAJzbxEHJMZ73MGoHuqKFTW85P+86G4TC l381GbQYnXfQR76mwDtPk2UOGKEt3o+pkRpWaTWxslUkfv8QZOybKSj18FTssY7qzgSWkBnz8HW AIMj6/HzJtxqtlV5JUXIQRCUtjiDmgd5o711nLVEUEDiJsZjMweDqOHFZ/fDEnXcCgoX+MQK2z6 4/DTe+ohlMhARR3NfyONgbU+EGZScTj+7ax5P2ZNcKwnPeCS5dSNggpTOEQyTuI/M3QDL74wU/Q X04F4GRy6SvywUAMj+l4feY19lnfbo98eNWCzK/tuuemyExFWZleM8ZeHXIhrg0xcg== X-Google-Smtp-Source: AGHT+IFLQQB8PIgB47lEoLRo2ST6auOmw+7NGb1XWBuHEDQQ8C9cuB2i4SpjOv/CK3OrWufps8Tifw== X-Received: by 2002:a05:6000:2584:b0:3a0:3d18:285 with SMTP id ffacd0b85a97d-3a08a558e69mr588817f8f.25.1745878517332; Mon, 28 Apr 2025 15:15:17 -0700 (PDT) Received: from tempest2.110.lan (xt27dd.stansat.pl. [83.243.39.221]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-440a53870f9sm135901085e9.33.2025.04.28.15.15.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Apr 2025 15:15:16 -0700 (PDT) From: Pawel Dembicki To: linux-hwmon@vger.kernel.org Cc: Pawel Dembicki , Jean Delvare , Guenter Roeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jonathan Corbet , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , Shen Lichuan , Greg KH , Peter Zijlstra , Charles Hsu , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org Subject: [PATCH 4/5] hwmon: pmbus: mpq8785: Implement voltage scale loop configuration Date: Tue, 29 Apr 2025 00:13:34 +0200 Message-ID: <20250428221420.2077697-5-paweldembicki@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250428221420.2077697-1-paweldembicki@gmail.com> References: <20250428221420.2077697-1-paweldembicki@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Implement support for setting the VOUT_SCALE_LOOP PMBus register based on an optional device tree property "voltage-scale-loop". This allows the driver to provide the correct VOUT value depending on the feedback voltage divider configuration for chips where the bootloader does not configure the voltage scale. Signed-off-by: Pawel Dembicki --- drivers/hwmon/pmbus/mpq8785.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/hwmon/pmbus/mpq8785.c b/drivers/hwmon/pmbus/mpq8785.c index e6a643856f08..6e2325d7f37b 100644 --- a/drivers/hwmon/pmbus/mpq8785.c +++ b/drivers/hwmon/pmbus/mpq8785.c @@ -78,6 +78,8 @@ static int mpq8785_probe(struct i2c_client *client) struct device *dev =3D &client->dev; struct pmbus_driver_info *info; enum chips chip_id; + u32 voltage_scale; + int ret; =20 info =3D devm_kmemdup(dev, &mpq8785_info, sizeof(*info), GFP_KERNEL); if (!info) @@ -105,6 +107,14 @@ static int mpq8785_probe(struct i2c_client *client) return -ENODEV; } =20 + if (!of_property_read_u32(dev->of_node, "voltage-scale-loop", + &voltage_scale)) { + ret =3D i2c_smbus_write_word_data(client, PMBUS_VOUT_SCALE_LOOP, + voltage_scale); + if (ret) + return ret; + } + return pmbus_do_probe(client, info); }; =20 --=20 2.43.0