[v3,0/2] Add MPS MP5920 Host-Swap controller

Message ID	20240701145603.1507516-1-xzeol@yahoo.com
Headers	show Received: from mail-lf1-f46.google.com (mail-lf1-f46.google.com [209.85.167.46]) (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 86C9616C852; Mon, 1 Jul 2024 14:56:08 +0000 (UTC) From: Alex Vdovydchenko <keromvp@gmail.com> To: Rob Herring <robh@kernel.org>, Krzysztof Kozlowski <krzk+dt@kernel.org>, Conor Dooley <conor+dt@kernel.org>, Sean Anderson <sean.anderson@linux.dev>, Guenter Roeck <linux@roeck-us.net>, Jean Delvare <jdelvare@suse.com>, Jonathan Corbet <corbet@lwn.net>, Delphine CC Chiu <Delphine_CC_Chiu@Wiwynn.com> Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-doc@vger.kernel.org, linux-i2c@vger.kernel.org, Alex Vdovydchenko <xzeol@yahoo.com> Subject: [PATCH v3 0/2] Add MPS MP5920 Host-Swap controller Date: Mon, 1 Jul 2024 17:55:59 +0300 Message-ID: <20240701145603.1507516-1-xzeol@yahoo.com> Precedence: bulk MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit
Series	Add MPS MP5920 Host-Swap controller \| expand [v3,0/2] Add MPS MP5920 Host-Swap controller [v3,1/2] dt-bindings: hwmon: Add MPS mp5920 [v3,2/2] hwmon: add MP5920 driver

Message ID

20240701145603.1507516-1-xzeol@yahoo.com

Headers

From: Alex Vdovydchenko <keromvp@gmail.com>
To: Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Sean Anderson <sean.anderson@linux.dev>,
	Guenter Roeck <linux@roeck-us.net>,
	Jean Delvare <jdelvare@suse.com>,
	Jonathan Corbet <corbet@lwn.net>,
	Delphine CC Chiu <Delphine_CC_Chiu@Wiwynn.com>
Cc: devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	linux-hwmon@vger.kernel.org,
	linux-doc@vger.kernel.org,
	linux-i2c@vger.kernel.org,
	Alex Vdovydchenko <xzeol@yahoo.com>
Subject: [PATCH v3 0/2] Add MPS MP5920 Host-Swap controller
Date: Mon,  1 Jul 2024 17:55:59 +0300
Message-ID: <20240701145603.1507516-1-xzeol@yahoo.com>
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MIME-Version: 1.0
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Series

Add MPS MP5920 Host-Swap controller | expand

Message

Alex Vdovydchenko July 1, 2024, 2:55 p.m. UTC

This series of patches adds the MP5920 Host-swap controller, which is used
as a protection and control IC for devices that are being inserted into a live
backplane. MP5920 acts as a voltage regulator (MP5911 etc) supervisor. IC
utilizes pmbus and provides monitoring, statistics and limits to electrical and
thermal characteristics such as:
- input and output voltage
- output current
- output power
- IC temperature

One must take into account the nonlinear character of readings, so there will be
a statistical error in the range 5–10 percents, depending on current passing
through. In order to use the IC, make sure to specify a valid I2C address
(consult to datasheet and dts-bindings)
MP5920 datasheet: https://www.monolithicpower.com/en/mp5920.html

Changes in v2:
  -  fixed typos
Changes in v3:
  -  removed unnecessary license blob
  -  removed unnecessary headers
  -  edited device tables style
  -  added chip name checking in probing
  -  fixed typos in pmbus_driver_info struct initialization

Alex Vdovydchenko (2):
  dt-bindings: hwmon: Add MPS mp5920
  hwmon: add MP5920 driver

 .../devicetree/bindings/trivial-devices.yaml  |  2 +
 Documentation/hwmon/index.rst                 |  1 +
 Documentation/hwmon/mp5920.rst                | 91 ++++++++++++++++++
 drivers/hwmon/pmbus/Kconfig                   |  9 ++
 drivers/hwmon/pmbus/Makefile                  |  1 +
 drivers/hwmon/pmbus/mp5920.c                  | 93 +++++++++++++++++++
 6 files changed, 197 insertions(+)
 create mode 100644 Documentation/hwmon/mp5920.rst
 create mode 100644 drivers/hwmon/pmbus/mp5920.c