| Guenter Roeck | e428d8d | 2011-04-18 09:55:59 -0700 | [diff] [blame] | 1 | Kernel driver max34440 |
| 2 | ====================== |
| 3 | |
| 4 | Supported chips: |
| 5 | * Maxim MAX34440 |
| 6 | Prefixes: 'max34440' |
| 7 | Addresses scanned: - |
| 8 | Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34440.pdf |
| 9 | * Maxim MAX34441 |
| 10 | PMBus 5-Channel Power-Supply Manager and Intelligent Fan Controller |
| 11 | Prefixes: 'max34441' |
| 12 | Addresses scanned: - |
| 13 | Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34441.pdf |
| 14 | |
| 15 | Author: Guenter Roeck <guenter.roeck@ericsson.com> |
| 16 | |
| 17 | |
| 18 | Description |
| 19 | ----------- |
| 20 | |
| 21 | This driver supports hardware montoring for Maxim MAX34440 PMBus 6-Channel |
| 22 | Power-Supply Manager and MAX34441 PMBus 5-Channel Power-Supply Manager |
| 23 | and Intelligent Fan Controller. |
| 24 | |
| 25 | The driver is a client driver to the core PMBus driver. Please see |
| 26 | Documentation/hwmon/pmbus for details on PMBus client drivers. |
| 27 | |
| 28 | |
| 29 | Usage Notes |
| 30 | ----------- |
| 31 | |
| 32 | This driver does not auto-detect devices. You will have to instantiate the |
| 33 | devices explicitly. Please see Documentation/i2c/instantiating-devices for |
| 34 | details. |
| 35 | |
| 36 | |
| 37 | Platform data support |
| 38 | --------------------- |
| 39 | |
| 40 | The driver supports standard PMBus driver platform data. |
| 41 | |
| 42 | |
| 43 | Sysfs entries |
| 44 | ------------- |
| 45 | |
| 46 | The following attributes are supported. Limits are read-write; all other |
| 47 | attributes are read-only. |
| 48 | |
| 49 | in[1-6]_label "vout[1-6]". |
| 50 | in[1-6]_input Measured voltage. From READ_VOUT register. |
| 51 | in[1-6]_min Minumum Voltage. From VOUT_UV_WARN_LIMIT register. |
| 52 | in[1-6]_max Maximum voltage. From VOUT_OV_WARN_LIMIT register. |
| 53 | in[1-6]_lcrit Critical minumum Voltage. VOUT_UV_FAULT_LIMIT register. |
| 54 | in[1-6]_crit Critical maximum voltage. From VOUT_OV_FAULT_LIMIT register. |
| 55 | in[1-6]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status. |
| 56 | in[1-6]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status. |
| 57 | in[1-6]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT status. |
| 58 | in[1-6]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT status. |
| Guenter Roeck | 98591db | 2011-07-09 13:17:43 -0700 | [diff] [blame] | 59 | in[1-6]_highest Historical maximum voltage. |
| 60 | in[1-6]_reset_history Write any value to reset history. |
| Guenter Roeck | e428d8d | 2011-04-18 09:55:59 -0700 | [diff] [blame] | 61 | |
| 62 | curr[1-6]_label "iout[1-6]". |
| 63 | curr[1-6]_input Measured current. From READ_IOUT register. |
| 64 | curr[1-6]_max Maximum current. From IOUT_OC_WARN_LIMIT register. |
| 65 | curr[1-6]_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register. |
| 66 | curr[1-6]_max_alarm Current high alarm. From IOUT_OC_WARNING status. |
| 67 | curr[1-6]_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status. |
| Guenter Roeck | 98591db | 2011-07-09 13:17:43 -0700 | [diff] [blame] | 68 | curr[1-6]_highest Historical maximum current. |
| 69 | curr[1-6]_reset_history Write any value to reset history. |
| Guenter Roeck | e428d8d | 2011-04-18 09:55:59 -0700 | [diff] [blame] | 70 | |
| 71 | in6 and curr6 attributes only exist for MAX34440. |
| 72 | |
| 73 | temp[1-8]_input Measured temperatures. From READ_TEMPERATURE_1 register. |
| 74 | temp1 is the chip's internal temperature. temp2..temp5 |
| 75 | are remote I2C temperature sensors. For MAX34441, temp6 |
| 76 | is a remote thermal-diode sensor. For MAX34440, temp6..8 |
| 77 | are remote I2C temperature sensors. |
| 78 | temp[1-8]_max Maximum temperature. From OT_WARN_LIMIT register. |
| 79 | temp[1-8]_crit Critical high temperature. From OT_FAULT_LIMIT register. |
| 80 | temp[1-8]_max_alarm Temperature high alarm. |
| 81 | temp[1-8]_crit_alarm Temperature critical high alarm. |
| Guenter Roeck | 98591db | 2011-07-09 13:17:43 -0700 | [diff] [blame] | 82 | temp[1-8]_highest Historical maximum temperature. |
| 83 | temp[1-8]_reset_history Write any value to reset history. |
| Guenter Roeck | e428d8d | 2011-04-18 09:55:59 -0700 | [diff] [blame] | 84 | |
| 85 | temp7 and temp8 attributes only exist for MAX34440. |