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