Quelle  lm25066.rst   Sprache: unbekannt

Kernel driver lm25066
=====================

Supported chips:

  * TI LM25056

    Prefix: 'lm25056'

    Addresses scanned: -

    Datasheets:

 https://www.ti.com/lit/gpn/lm25056

 https://www.ti.com/lit/gpn/lm25056a

  * National Semiconductor LM25066

    Prefix: 'lm25066'

    Addresses scanned: -

    Datasheets:

 http://www.national.com/pf/LM/LM25066.html

 http://www.national.com/pf/LM/LM25066A.html

  * National Semiconductor LM5064

    Prefix: 'lm5064'

    Addresses scanned: -

    Datasheet:

 http://www.national.com/pf/LM/LM5064.html

  * National Semiconductor LM5066

    Prefix: 'lm5066'

    Addresses scanned: -

    Datasheet:

 http://www.national.com/pf/LM/LM5066.html

  * Texas Instruments LM5066I

    Prefix: 'lm5066i'

    Addresses scanned: -

 Datasheet:

    https://www.ti.com/product/LM5066I


Author: Guenter Roeck <linux@roeck-us.net>


Description
-----------

This driver supports hardware monitoring for National Semiconductor / TI LM25056,
LM25066, LM5064, and LM5066/LM5066I Power Management, Monitoring,
Control, and Protection ICs.

The driver is a client driver to the core PMBus driver. Please see
Documentation/hwmon/pmbus.rst 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
details.

The shunt (sense) resistor value can be configured by a device tree property;
see Documentation/devicetree/bindings/hwmon/pmbus/ti,lm25066.yaml for details.

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_min_alarm  Input voltage low alarm.
in1_max_alarm  Input voltage high alarm.

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.

curr1_label  "iin"
curr1_input  Measured input current.
curr1_average  Average measured input current.
curr1_max  Maximum input current.
curr1_max_alarm  Input current high alarm.

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.

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.
======================= =======================================================