Kernel driver ltc4215

Supported chips:

Author: Ira W. Snyder <iws@ovro.caltech.edu>

Description

The LTC4215 controller allows a board to be safely inserted and removed from a live backplane.

Usage Notes

This driver does not probe for LTC4215 devices, due to the fact that some of the possible addresses are unfriendly to probing. You will have to instantiate the devices explicitly.

Example: the following will load the driver for an LTC4215 at address 0x44 on I2C bus #0:

$ modprobe ltc4215
$ echo ltc4215 0x44 > /sys/bus/i2c/devices/i2c-0/new_device

Sysfs entries

The LTC4215 has built-in limits for overvoltage, undervoltage, and undercurrent warnings. This makes it very likely that the reference circuit will be used.

in1_input

input voltage

in2_input

output voltage

in1_min_alarm

input undervoltage alarm

in1_max_alarm

input overvoltage alarm

curr1_input

current

curr1_max_alarm

overcurrent alarm

power1_input

power usage

power1_alarm

power bad alarm