Documentation/hwmon/ltc2978

Kernel driver ltc2978
=====================

Supported chips:
  * Linear Technology LTC2978
    Prefix: 'ltc2978'
    Addresses scanned: -
    Datasheet: http://cds.linear.com/docs/Datasheet/2978fa.pdf

Author: Guenter Roeck <guenter.roeck@ericsson.com>


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

The LTC2978 is an octal power supply monitor, supervisor, sequencer and
margin controller.


Usage Notes
-----------

This driver does not probe for PMBus devices. You will have to instantiate
devices explicitly.

Example: the following commands will load the driver for an LTC2978 at address
0x60 on I2C bus #1:

# modprobe ltc2978
# echo ltc2978 0x60 > /sys/bus/i2c/devices/i2c-1/new_device


Sysfs attributes
----------------

in1_label		"vin"
in1_input		Measured input voltage.
in1_min			Minimum input voltage.
in1_max			Maximum input voltage.
in1_lcrit		Critical minimum input voltage.
in1_crit		Critical maximum input voltage.
in1_min_alarm		Input voltage low alarm.
in1_max_alarm		Input voltage high alarm.
in1_lcrit_alarm		Input voltage critical low alarm.
in1_crit_alarm		Input voltage critical high alarm.
in1_lowest		Lowest input voltage.
in1_highest		Highest input voltage.
in1_reset_history	Reset history. Writing into this attribute will reset
			history for all attributes.

in[2-9]_label		"vout[1-8]".
in[2-9]_input		Measured output voltage.
in[2-9]_min		Minimum output voltage.
in[2-9]_max		Maximum output voltage.
in[2-9]_lcrit		Critical minimum output voltage.
in[2-9]_crit		Critical maximum output voltage.
in[2-9]_min_alarm	Output voltage low alarm.
in[2-9]_max_alarm	Output voltage high alarm.
in[2-9]_lcrit_alarm	Output voltage critical low alarm.
in[2-9]_crit_alarm	Output voltage critical high alarm.
in[2-9]_lowest		Lowest output voltage.
in[2-9]_highest		Lowest output voltage.
in[2-9]_reset_history	Reset history. Writing into this attribute will reset
			history for all attributes.

temp1_input		Measured temperature.
temp1_min		Mimimum temperature.
temp1_max		Maximum temperature.
temp1_lcrit		Critical low temperature.
temp1_crit		Critical high temperature.
temp1_min_alarm		Chip temperature low alarm.
temp1_max_alarm		Chip temperature high alarm.
temp1_lcrit_alarm	Chip temperature critical low alarm.
temp1_crit_alarm	Chip temperature critical high alarm.
temp1_lowest		Lowest measured temperature.
temp1_highest		Highest measured temperature.
temp1_reset_history	Reset history. Writing into this attribute will reset
			history for all attributes.