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cubelinux-kernel/Documentation/hwmon/bcm54140.rst
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Greg Kroah-Hartman 598cf27219 Linux 6.19.3
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org
Tested-by: Florian Fainelli <florian.fainelli@broadcom.com>
Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com>
Tested-by: Peter Schneider <pschneider1968@googlemail.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Salvatore Bonaccorso <carnil@debian.org>
Tested-by: Brett A C Sheffield <bacs@librecast.net>
Tested-by: Mark Brown <broonie@kernel.org>
Tested-by: Luna Jernberg <droidbittin@gmail.com>
Tested-by: Ronald Warsow <rwarsow@gmx.de>
Tested-by: Justin M. Forbes <jforbes@fedoraproject.org>
Tested-by: Ron Economos <re@w6rz.net>
Tested-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-02-19 16:33:27 +01:00

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.. SPDX-License-Identifier: GPL-2.0-only
Broadcom BCM54140 Quad SGMII/QSGMII PHY
=======================================
Supported chips:
* Broadcom BCM54140
Datasheet: not public
Author: Michael Walle <michael@walle.cc>
Description
-----------
The Broadcom BCM54140 is a Quad SGMII/QSGMII PHY which supports monitoring
its die temperature as well as two analog voltages.
The AVDDL is a 1.0V analogue voltage, the AVDDH is a 3.3V analogue voltage.
Both voltages and the temperature are measured in a round-robin fashion.
Sysfs entries
-------------
The following attributes are supported.
======================= ========================================================
in0_label "AVDDL"
in0_input Measured AVDDL voltage.
in0_min Minimum AVDDL voltage.
in0_max Maximum AVDDL voltage.
in0_alarm AVDDL voltage alarm.
in1_label "AVDDH"
in1_input Measured AVDDH voltage.
in1_min Minimum AVDDH voltage.
in1_max Maximum AVDDH voltage.
in1_alarm AVDDH voltage alarm.
temp1_input Die temperature.
temp1_min Minimum die temperature.
temp1_max Maximum die temperature.
temp1_alarm Die temperature alarm.
======================= ========================================================