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Kernel driver lm25066
Supported chips:
* TI LM25056
Prefix: 'lm25056'
Addresses scanned: -
* TI LM25063
Prefix: 'lm25063'
Addresses scanned: -
To be announced
* National Semiconductor LM25066
Prefix: 'lm25066'
Addresses scanned: -
* National Semiconductor LM5064
Prefix: 'lm5064'
Addresses scanned: -
* National Semiconductor LM5066
Prefix: 'lm5066'
Addresses scanned: -
Author: Guenter Roeck <>
This driver supports hardware montoring for National Semiconductor / TI LM25056,
LM25063, LM25066, LM5064, and LM5066 Power Management, Monitoring, Control, and
Protection ICs.
The driver is a client driver to the core PMBus driver. Please see
Documentation/hwmon/pmbus 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 for
Platform data support
The driver supports standard PMBus driver platform data.
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_average Average measured input voltage.
in1_min Minimum input voltage.
in1_max Maximum input voltage.
in1_crit Critical high input voltage (LM25063 only).
in1_lcrit Critical low input voltage (LM25063 only).
in1_min_alarm Input voltage low alarm.
in1_max_alarm Input voltage high alarm.
in1_lcrit_alarm Input voltage critical low alarm (LM25063 only).
in1_crit_alarm Input voltage critical high alarm. (LM25063 only).
in2_label "vmon"
in2_input Measured voltage on VAUX pin
in2_min Minimum VAUX voltage (LM25056 only).
in2_max Maximum VAUX voltage (LM25056 only).
in2_min_alarm VAUX voltage low alarm (LM25056 only).
in2_max_alarm VAUX voltage high alarm (LM25056 only).
in3_label "vout1"
Not supported on LM25056.
in3_input Measured output voltage.
in3_average Average measured output voltage.
in3_min Minimum output voltage.
in3_min_alarm Output voltage low alarm.
in3_highest Historical minimum output voltage (LM25063 only).
in3_lowest Historical maximum output voltage (LM25063 only).
curr1_label "iin"
curr1_input Measured input current.
curr1_average Average measured input current.
curr1_max Maximum input current.
curr1_crit Critical input current (LM25063 only).
curr1_max_alarm Input current high alarm.
curr1_crit_alarm Input current critical high alarm (LM25063 only).
power1_label "pin"
power1_input Measured input power.
power1_average Average measured input power.
power1_max Maximum input power limit.
power1_alarm Input power alarm
power1_input_highest Historical maximum power.
power1_reset_history Write any value to reset maximum power history.
power2_label "pout". LM25063 only.
power2_input Measured output power.
power2_max Maximum output power limit.
power2_crit Critical output power limit.
temp1_input Measured temperature.
temp1_max Maximum temperature.
temp1_crit Critical high temperature.
temp1_max_alarm Chip temperature high alarm.
temp1_crit_alarm Chip temperature critical high alarm.