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90 lines
2.8 KiB
90 lines
2.8 KiB
.. SPDX-License-Identifier: GPL-2.0 |
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Kernel driver stpddc60 |
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====================== |
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Supported chips: |
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* ST STPDDC60 |
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Prefix: 'stpddc60', 'bmr481' |
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Addresses scanned: - |
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Datasheet: https://flexpowermodules.com/documents/fpm-techspec-bmr481 |
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Author: Erik Rosen <[email protected]> |
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Description |
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----------- |
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This driver supports hardware monitoring for ST STPDDC60 controller chip and |
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compatible modules. |
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The driver is a client driver to the core PMBus driver. Please see |
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Documentation/hwmon/pmbus.rst and Documentation.hwmon/pmbus-core for details |
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on PMBus client drivers. |
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Usage Notes |
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----------- |
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This driver does not auto-detect devices. You will have to instantiate the |
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devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for |
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details. |
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The vout under- and over-voltage limits are set in relation to the commanded |
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output voltage as a positive or negative offset in the interval 50mV to 400mV |
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in 50mV steps. This means that the absolute values of the limits will change |
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when the commanded output voltage changes. Also, care should be taken when |
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writing to those limits since in the worst case the commanded output voltage |
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could change at the same time as the limit is written to, wich will lead to |
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unpredictable results. |
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Platform data support |
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--------------------- |
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The driver supports standard PMBus driver platform data. |
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Sysfs entries |
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------------- |
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The following attributes are supported. Vin, iout, pout and temp limits |
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are read-write; all other attributes are read-only. |
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======================= ======================================================== |
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in1_label "vin" |
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in1_input Measured input voltage. |
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in1_lcrit Critical minimum input voltage. |
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in1_crit Critical maximum input voltage. |
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in1_lcrit_alarm Input voltage critical low alarm. |
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in1_crit_alarm Input voltage critical high alarm. |
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in2_label "vout1" |
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in2_input Measured output voltage. |
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in2_lcrit Critical minimum output voltage. |
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in2_crit Critical maximum output voltage. |
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in2_lcrit_alarm Critical output voltage critical low alarm. |
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in2_crit_alarm Critical output voltage critical high alarm. |
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curr1_label "iout1" |
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curr1_input Measured output current. |
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curr1_max Maximum output current. |
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curr1_max_alarm Output current high alarm. |
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curr1_crit Critical maximum output current. |
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curr1_crit_alarm Output current critical high alarm. |
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power1_label "pout1" |
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power1_input Measured output power. |
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power1_crit Critical maximum output power. |
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power1_crit_alarm Output power critical high alarm. |
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temp1_input Measured maximum temperature of all phases. |
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temp1_max Maximum temperature limit. |
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temp1_max_alarm High temperature alarm. |
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temp1_crit Critical maximum temperature limit. |
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temp1_crit_alarm Critical maximum temperature alarm. |
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======================= ========================================================
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