1*1e406332SErik Rosen.. SPDX-License-Identifier: GPL-2.0 2*1e406332SErik Rosen 3*1e406332SErik RosenKernel driver max15301 4*1e406332SErik Rosen====================== 5*1e406332SErik Rosen 6*1e406332SErik RosenSupported chips: 7*1e406332SErik Rosen 8*1e406332SErik Rosen * Maxim MAX15301 9*1e406332SErik Rosen 10*1e406332SErik Rosen Prefix: 'max15301', 'bmr461' 11*1e406332SErik Rosen 12*1e406332SErik Rosen Addresses scanned: - 13*1e406332SErik Rosen 14*1e406332SErik Rosen Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX15301.pdf 15*1e406332SErik Rosen 16*1e406332SErik RosenAuthor: Erik Rosen <erik.rosen@metormote.com> 17*1e406332SErik Rosen 18*1e406332SErik Rosen 19*1e406332SErik RosenDescription 20*1e406332SErik Rosen----------- 21*1e406332SErik Rosen 22*1e406332SErik RosenThis driver supports hardware monitoring for Maxim MAX15301 controller chip and 23*1e406332SErik Rosencompatible modules. 24*1e406332SErik Rosen 25*1e406332SErik RosenThe driver is a client driver to the core PMBus driver. Please see 26*1e406332SErik RosenDocumentation/hwmon/pmbus.rst and Documentation.hwmon/pmbus-core for details 27*1e406332SErik Rosenon PMBus client drivers. 28*1e406332SErik Rosen 29*1e406332SErik Rosen 30*1e406332SErik RosenUsage Notes 31*1e406332SErik Rosen----------- 32*1e406332SErik Rosen 33*1e406332SErik RosenThis driver does not auto-detect devices. You will have to instantiate the 34*1e406332SErik Rosendevices explicitly. Please see Documentation/i2c/instantiating-devices.rst for 35*1e406332SErik Rosendetails. 36*1e406332SErik Rosen 37*1e406332SErik Rosen 38*1e406332SErik RosenPlatform data support 39*1e406332SErik Rosen--------------------- 40*1e406332SErik Rosen 41*1e406332SErik RosenThe driver supports standard PMBus driver platform data. 42*1e406332SErik Rosen 43*1e406332SErik Rosen 44*1e406332SErik RosenModule parameters 45*1e406332SErik Rosen----------------- 46*1e406332SErik Rosen 47*1e406332SErik Rosendelay 48*1e406332SErik Rosen----- 49*1e406332SErik Rosen 50*1e406332SErik RosenThe controller requires a minimum interval between I2C bus accesses. 51*1e406332SErik RosenThe default interval is set to 100 us. For manual override, the driver 52*1e406332SErik Rosenprovides a writeable module parameter, 'delay', which can be used to 53*1e406332SErik Rosenset the interval to a value between 0 and 65,535 microseconds. 54*1e406332SErik Rosen 55*1e406332SErik Rosen 56*1e406332SErik RosenSysfs entries 57*1e406332SErik Rosen------------- 58*1e406332SErik Rosen 59*1e406332SErik RosenThe following attributes are supported. Limits are read-write; all other 60*1e406332SErik Rosenattributes are read-only. 61*1e406332SErik Rosen 62*1e406332SErik Rosen======================= ======================================================== 63*1e406332SErik Rosenin1_label "vin" 64*1e406332SErik Rosenin1_input Measured input voltage. 65*1e406332SErik Rosenin1_lcrit Critical minimum input voltage. 66*1e406332SErik Rosenin1_crit Critical maximum input voltage. 67*1e406332SErik Rosenin1_lcrit_alarm Input voltage critical low alarm. 68*1e406332SErik Rosenin1_crit_alarm Input voltage critical high alarm. 69*1e406332SErik Rosen 70*1e406332SErik Rosenin2_label "vout1" 71*1e406332SErik Rosenin2_input Measured output voltage. 72*1e406332SErik Rosenin2_lcrit Critical minimum output Voltage. 73*1e406332SErik Rosenin2_crit Critical maximum output voltage. 74*1e406332SErik Rosenin2_lcrit_alarm Critical output voltage critical low alarm. 75*1e406332SErik Rosenin2_crit_alarm Critical output voltage critical high alarm. 76*1e406332SErik Rosen 77*1e406332SErik Rosencurr1_label "iout1" 78*1e406332SErik Rosencurr1_input Measured output current. 79*1e406332SErik Rosencurr1_crit Critical maximum output current. 80*1e406332SErik Rosencurr1_crit_alarm Output current critical high alarm. 81*1e406332SErik Rosen 82*1e406332SErik Rosentemp1_input Measured maximum temperature of all phases. 83*1e406332SErik Rosentemp1_max Maximum temperature limit. 84*1e406332SErik Rosentemp1_max_alarm High temperature alarm. 85*1e406332SErik Rosentemp1_crit Critical maximum temperature limit. 86*1e406332SErik Rosentemp1_crit_alarm Critical maximum temperature alarm. 87*1e406332SErik Rosen======================= ======================================================== 88