0001 .. SPDX-License-Identifier: GPL-2.0
0002
0003 Kernel driver max15301
0004 ======================
0005
0006 Supported chips:
0007
0008 * Maxim MAX15301
0009
0010 Prefix: 'max15301', 'bmr461'
0011
0012 Addresses scanned: -
0013
0014 Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX15301.pdf
0015
0016 Author: Erik Rosen <erik.rosen@metormote.com>
0017
0018
0019 Description
0020 -----------
0021
0022 This driver supports hardware monitoring for Maxim MAX15301 controller chip and
0023 compatible modules.
0024
0025 The driver is a client driver to the core PMBus driver. Please see
0026 Documentation/hwmon/pmbus.rst and Documentation.hwmon/pmbus-core for details
0027 on PMBus client drivers.
0028
0029
0030 Usage Notes
0031 -----------
0032
0033 This driver does not auto-detect devices. You will have to instantiate the
0034 devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for
0035 details.
0036
0037
0038 Platform data support
0039 ---------------------
0040
0041 The driver supports standard PMBus driver platform data.
0042
0043
0044 Module parameters
0045 -----------------
0046
0047 delay
0048 -----
0049
0050 The controller requires a minimum interval between I2C bus accesses.
0051 The default interval is set to 100 us. For manual override, the driver
0052 provides a writeable module parameter, 'delay', which can be used to
0053 set the interval to a value between 0 and 65,535 microseconds.
0054
0055
0056 Sysfs entries
0057 -------------
0058
0059 The following attributes are supported. Limits are read-write; all other
0060 attributes are read-only.
0061
0062 ======================= ========================================================
0063 in1_label "vin"
0064 in1_input Measured input voltage.
0065 in1_lcrit Critical minimum input voltage.
0066 in1_crit Critical maximum input voltage.
0067 in1_lcrit_alarm Input voltage critical low alarm.
0068 in1_crit_alarm Input voltage critical high alarm.
0069
0070 in2_label "vout1"
0071 in2_input Measured output voltage.
0072 in2_lcrit Critical minimum output Voltage.
0073 in2_crit Critical maximum output voltage.
0074 in2_lcrit_alarm Critical output voltage critical low alarm.
0075 in2_crit_alarm Critical output voltage critical high alarm.
0076
0077 curr1_label "iout1"
0078 curr1_input Measured output current.
0079 curr1_crit Critical maximum output current.
0080 curr1_crit_alarm Output current critical high alarm.
0081
0082 temp1_input Measured maximum temperature of all phases.
0083 temp1_max Maximum temperature limit.
0084 temp1_max_alarm High temperature alarm.
0085 temp1_crit Critical maximum temperature limit.
0086 temp1_crit_alarm Critical maximum temperature alarm.
0087 ======================= ========================================================
