1*4882a593SmuzhiyunKernel driver max8688 2*4882a593Smuzhiyun===================== 3*4882a593Smuzhiyun 4*4882a593SmuzhiyunSupported chips: 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun * Maxim MAX8688 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun Prefix: 'max8688' 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun Addresses scanned: - 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX8688.pdf 13*4882a593Smuzhiyun 14*4882a593SmuzhiyunAuthor: Guenter Roeck <linux@roeck-us.net> 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun 17*4882a593SmuzhiyunDescription 18*4882a593Smuzhiyun----------- 19*4882a593Smuzhiyun 20*4882a593SmuzhiyunThis driver supports hardware monitoring for Maxim MAX8688 Digital Power-Supply 21*4882a593SmuzhiyunController/Monitor with PMBus Interface. 22*4882a593Smuzhiyun 23*4882a593SmuzhiyunThe driver is a client driver to the core PMBus driver. Please see 24*4882a593SmuzhiyunDocumentation/hwmon/pmbus.rst for details on PMBus client drivers. 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun 27*4882a593SmuzhiyunUsage Notes 28*4882a593Smuzhiyun----------- 29*4882a593Smuzhiyun 30*4882a593SmuzhiyunThis driver does not auto-detect devices. You will have to instantiate the 31*4882a593Smuzhiyundevices explicitly. Please see Documentation/i2c/instantiating-devices.rst for 32*4882a593Smuzhiyundetails. 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun 35*4882a593SmuzhiyunPlatform data support 36*4882a593Smuzhiyun--------------------- 37*4882a593Smuzhiyun 38*4882a593SmuzhiyunThe driver supports standard PMBus driver platform data. 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun 41*4882a593SmuzhiyunSysfs entries 42*4882a593Smuzhiyun------------- 43*4882a593Smuzhiyun 44*4882a593SmuzhiyunThe following attributes are supported. Limits are read-write; all other 45*4882a593Smuzhiyunattributes are read-only. 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun======================= ======================================================== 48*4882a593Smuzhiyunin1_label "vout1" 49*4882a593Smuzhiyunin1_input Measured voltage. From READ_VOUT register. 50*4882a593Smuzhiyunin1_min Minimum Voltage. From VOUT_UV_WARN_LIMIT register. 51*4882a593Smuzhiyunin1_max Maximum voltage. From VOUT_OV_WARN_LIMIT register. 52*4882a593Smuzhiyunin1_lcrit Critical minimum Voltage. VOUT_UV_FAULT_LIMIT register. 53*4882a593Smuzhiyunin1_crit Critical maximum voltage. From VOUT_OV_FAULT_LIMIT 54*4882a593Smuzhiyun register. 55*4882a593Smuzhiyunin1_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status. 56*4882a593Smuzhiyunin1_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status. 57*4882a593Smuzhiyunin1_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT 58*4882a593Smuzhiyun status. 59*4882a593Smuzhiyunin1_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT 60*4882a593Smuzhiyun status. 61*4882a593Smuzhiyunin1_highest Historical maximum voltage. 62*4882a593Smuzhiyunin1_reset_history Write any value to reset history. 63*4882a593Smuzhiyun 64*4882a593Smuzhiyuncurr1_label "iout1" 65*4882a593Smuzhiyuncurr1_input Measured current. From READ_IOUT register. 66*4882a593Smuzhiyuncurr1_max Maximum current. From IOUT_OC_WARN_LIMIT register. 67*4882a593Smuzhiyuncurr1_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT 68*4882a593Smuzhiyun register. 69*4882a593Smuzhiyuncurr1_max_alarm Current high alarm. From IOUT_OC_WARN_LIMIT register. 70*4882a593Smuzhiyuncurr1_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status. 71*4882a593Smuzhiyuncurr1_highest Historical maximum current. 72*4882a593Smuzhiyuncurr1_reset_history Write any value to reset history. 73*4882a593Smuzhiyun 74*4882a593Smuzhiyuntemp1_input Measured temperature. From READ_TEMPERATURE_1 register. 75*4882a593Smuzhiyuntemp1_max Maximum temperature. From OT_WARN_LIMIT register. 76*4882a593Smuzhiyuntemp1_crit Critical high temperature. From OT_FAULT_LIMIT register. 77*4882a593Smuzhiyuntemp1_max_alarm Chip temperature high alarm. Set by comparing 78*4882a593Smuzhiyun READ_TEMPERATURE_1 with OT_WARN_LIMIT if TEMP_OT_WARNING 79*4882a593Smuzhiyun status is set. 80*4882a593Smuzhiyuntemp1_crit_alarm Chip temperature critical high alarm. Set by comparing 81*4882a593Smuzhiyun READ_TEMPERATURE_1 with OT_FAULT_LIMIT if TEMP_OT_FAULT 82*4882a593Smuzhiyun status is set. 83*4882a593Smuzhiyuntemp1_highest Historical maximum temperature. 84*4882a593Smuzhiyuntemp1_reset_history Write any value to reset history. 85*4882a593Smuzhiyun======================= ======================================================== 86