max15301.rst (2410B)
1.. SPDX-License-Identifier: GPL-2.0 2 3Kernel driver max15301 4====================== 5 6Supported chips: 7 8 * Maxim MAX15301 9 10 Prefix: 'max15301', 'bmr461' 11 12 Addresses scanned: - 13 14 Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX15301.pdf 15 16Author: Erik Rosen <erik.rosen@metormote.com> 17 18 19Description 20----------- 21 22This driver supports hardware monitoring for Maxim MAX15301 controller chip and 23compatible modules. 24 25The driver is a client driver to the core PMBus driver. Please see 26Documentation/hwmon/pmbus.rst and Documentation.hwmon/pmbus-core for details 27on PMBus client drivers. 28 29 30Usage Notes 31----------- 32 33This driver does not auto-detect devices. You will have to instantiate the 34devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for 35details. 36 37 38Platform data support 39--------------------- 40 41The driver supports standard PMBus driver platform data. 42 43 44Module parameters 45----------------- 46 47delay 48----- 49 50The controller requires a minimum interval between I2C bus accesses. 51The default interval is set to 100 us. For manual override, the driver 52provides a writeable module parameter, 'delay', which can be used to 53set the interval to a value between 0 and 65,535 microseconds. 54 55 56Sysfs entries 57------------- 58 59The following attributes are supported. Limits are read-write; all other 60attributes are read-only. 61 62======================= ======================================================== 63in1_label "vin" 64in1_input Measured input voltage. 65in1_lcrit Critical minimum input voltage. 66in1_crit Critical maximum input voltage. 67in1_lcrit_alarm Input voltage critical low alarm. 68in1_crit_alarm Input voltage critical high alarm. 69 70in2_label "vout1" 71in2_input Measured output voltage. 72in2_lcrit Critical minimum output Voltage. 73in2_crit Critical maximum output voltage. 74in2_lcrit_alarm Critical output voltage critical low alarm. 75in2_crit_alarm Critical output voltage critical high alarm. 76 77curr1_label "iout1" 78curr1_input Measured output current. 79curr1_crit Critical maximum output current. 80curr1_crit_alarm Output current critical high alarm. 81 82temp1_input Measured maximum temperature of all phases. 83temp1_max Maximum temperature limit. 84temp1_max_alarm High temperature alarm. 85temp1_crit Critical maximum temperature limit. 86temp1_crit_alarm Critical maximum temperature alarm. 87======================= ========================================================