blob: e3dc22fe1c6d0035593e59481a610452eec8abf9 [file] [log] [blame]
.. SPDX-License-Identifier: GPL-2.0
Kernel driver max15301
Supported chips:
* Maxim MAX15301
Prefix: 'max15301', 'bmr461'
Addresses scanned: -
Author: Erik Rosen <>
This driver supports hardware monitoring for Maxim MAX15301 controller chip and
compatible modules.
The driver is a client driver to the core PMBus driver. Please see
Documentation/hwmon/pmbus.rst and Documentation.hwmon/pmbus-core for details
on PMBus client drivers.
Usage Notes
This driver does not auto-detect devices. You will have to instantiate the
devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for
Platform data support
The driver supports standard PMBus driver platform data.
Module parameters
The controller requires a minimum interval between I2C bus accesses.
The default interval is set to 100 us. For manual override, the driver
provides a writeable module parameter, 'delay', which can be used to
set the interval to a value between 0 and 65,535 microseconds.
Sysfs entries
The following attributes are supported. Limits are read-write; all other
attributes are read-only.
======================= ========================================================
in1_label "vin"
in1_input Measured input voltage.
in1_lcrit Critical minimum input voltage.
in1_crit Critical maximum input voltage.
in1_lcrit_alarm Input voltage critical low alarm.
in1_crit_alarm Input voltage critical high alarm.
in2_label "vout1"
in2_input Measured output voltage.
in2_lcrit Critical minimum output Voltage.
in2_crit Critical maximum output voltage.
in2_lcrit_alarm Critical output voltage critical low alarm.
in2_crit_alarm Critical output voltage critical high alarm.
curr1_label "iout1"
curr1_input Measured output current.
curr1_crit Critical maximum output current.
curr1_crit_alarm Output current critical high alarm.
temp1_input Measured maximum temperature of all phases.
temp1_max Maximum temperature limit.
temp1_max_alarm High temperature alarm.
temp1_crit Critical maximum temperature limit.
temp1_crit_alarm Critical maximum temperature alarm.
======================= ========================================================