2021-02-18 11:52:49 +00:00
|
|
|
.. SPDX-License-Identifier: GPL-2.0
|
|
|
|
|
|
|
|
|
|
Kernel driver stpddc60
|
|
|
|
|
======================
|
|
|
|
|
|
|
|
|
|
Supported chips:
|
|
|
|
|
|
|
|
|
|
* ST STPDDC60
|
|
|
|
|
|
|
|
|
|
Prefix: 'stpddc60', 'bmr481'
|
|
|
|
|
|
|
|
|
|
Addresses scanned: -
|
|
|
|
|
|
|
|
|
|
Datasheet: https://flexpowermodules.com/documents/fpm-techspec-bmr481
|
|
|
|
|
|
|
|
|
|
Author: Erik Rosen <erik.rosen@metormote.com>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Description
|
|
|
|
|
-----------
|
|
|
|
|
|
|
|
|
|
This driver supports hardware monitoring for ST STPDDC60 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
|
|
|
|
|
details.
|
|
|
|
|
|
|
|
|
|
The vout under- and over-voltage limits are set in relation to the commanded
|
|
|
|
|
output voltage as a positive or negative offset in the interval 50mV to 400mV
|
|
|
|
|
in 50mV steps. This means that the absolute values of the limits will change
|
|
|
|
|
when the commanded output voltage changes. Also, care should be taken when
|
|
|
|
|
writing to those limits since in the worst case the commanded output voltage
|
2023-01-29 23:10:47 +00:00
|
|
|
could change at the same time as the limit is written to, which will lead to
|
2021-02-18 11:52:49 +00:00
|
|
|
unpredictable results.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Platform data support
|
|
|
|
|
---------------------
|
|
|
|
|
|
|
|
|
|
The driver supports standard PMBus driver platform data.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Sysfs entries
|
|
|
|
|
-------------
|
|
|
|
|
|
|
|
|
|
The following attributes are supported. Vin, iout, pout and temp 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_max Maximum output current.
|
|
|
|
|
curr1_max_alarm Output current high alarm.
|
|
|
|
|
curr1_crit Critical maximum output current.
|
|
|
|
|
curr1_crit_alarm Output current critical high alarm.
|
|
|
|
|
|
|
|
|
|
power1_label "pout1"
|
|
|
|
|
power1_input Measured output power.
|
|
|
|
|
power1_crit Critical maximum output power.
|
|
|
|
|
power1_crit_alarm Output power 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.
|
|
|
|
|
======================= ========================================================
|
