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diff --git a/Documentation/hwmon/stpddc60.rst b/Documentation/hwmon/stpddc60.rst new file mode 100644 index 000000000000..0c31f78fe58b --- /dev/null +++ b/Documentation/hwmon/stpddc60.rst @@ -0,0 +1,90 @@ +.. 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 +could change at the same time as the limit is written to, which will lead to +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. +======================= ======================================================== |