projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 2669d9f5 GR |
1 | Kernel driver max8688 |
| 2 | ===================== | |
| 3 | ||
| 4 | Supported chips: | |
| 1f234ff1 | 5 | |
| 2669d9f5 | 6 | * Maxim MAX8688 |
| 1f234ff1 | 7 | |
| 2669d9f5 | 8 | Prefix: 'max8688' |
| 1f234ff1 | 9 | |
| 2669d9f5 | 10 | Addresses scanned: - |
| 1f234ff1 | 11 | |
| 2669d9f5 GR |
12 | Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX8688.pdf |
| 13 | ||
| e3333e57 | 14 | Author: Guenter Roeck <linux@roeck-us.net> |
| 2669d9f5 GR |
15 | |
| 16 | ||
| 17 | Description | |
| 18 | ----------- | |
| 19 | ||
| 92417dad | 20 | This driver supports hardware monitoring for Maxim MAX8688 Digital Power-Supply |
| 2669d9f5 GR |
21 | Controller/Monitor with PMBus Interface. |
| 22 | ||
| 23 | The driver is a client driver to the core PMBus driver. Please see | |
| 7ebd8b66 | 24 | Documentation/hwmon/pmbus.rst for details on PMBus client drivers. |
| 2669d9f5 GR |
25 | |
| 26 | ||
| 27 | Usage Notes | |
| 28 | ----------- | |
| 29 | ||
| 30 | This driver does not auto-detect devices. You will have to instantiate the | |
| ccf988b6 | 31 | devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for |
| 2669d9f5 GR |
32 | details. |
| 33 | ||
| 34 | ||
| 35 | Platform data support | |
| 36 | --------------------- | |
| 37 | ||
| 38 | The driver supports standard PMBus driver platform data. | |
| 39 | ||
| 40 | ||
| 41 | Sysfs entries | |
| 42 | ------------- | |
| 43 | ||
| 44 | The following attributes are supported. Limits are read-write; all other | |
| 45 | attributes are read-only. | |
| 46 | ||
| 1f234ff1 | 47 | ======================= ======================================================== |
| 2669d9f5 GR |
48 | in1_label "vout1" |
| 49 | in1_input Measured voltage. From READ_VOUT register. | |
| 40e47125 | 50 | in1_min Minimum Voltage. From VOUT_UV_WARN_LIMIT register. |
| 2669d9f5 | 51 | in1_max Maximum voltage. From VOUT_OV_WARN_LIMIT register. |
| 40e47125 | 52 | in1_lcrit Critical minimum Voltage. VOUT_UV_FAULT_LIMIT register. |
| 1f234ff1 MCC |
53 | in1_crit Critical maximum voltage. From VOUT_OV_FAULT_LIMIT |
| 54 | register. | |
| 2669d9f5 GR |
55 | in1_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status. |
| 56 | in1_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status. | |
| 1f234ff1 MCC |
57 | in1_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT |
| 58 | status. | |
| 59 | in1_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT | |
| 60 | status. | |
| 70e94b27 GR |
61 | in1_highest Historical maximum voltage. |
| 62 | in1_reset_history Write any value to reset history. | |
| 2669d9f5 GR |
63 | |
| 64 | curr1_label "iout1" | |
| 65 | curr1_input Measured current. From READ_IOUT register. | |
| 66 | curr1_max Maximum current. From IOUT_OC_WARN_LIMIT register. | |
| 1f234ff1 MCC |
67 | curr1_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT |
| 68 | register. | |
| 2669d9f5 GR |
69 | curr1_max_alarm Current high alarm. From IOUT_OC_WARN_LIMIT register. |
| 70 | curr1_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status. | |
| 70e94b27 GR |
71 | curr1_highest Historical maximum current. |
| 72 | curr1_reset_history Write any value to reset history. | |
| 2669d9f5 GR |
73 | |
| 74 | temp1_input Measured temperature. From READ_TEMPERATURE_1 register. | |
| 75 | temp1_max Maximum temperature. From OT_WARN_LIMIT register. | |
| 76 | temp1_crit Critical high temperature. From OT_FAULT_LIMIT register. | |
| 77 | temp1_max_alarm Chip temperature high alarm. Set by comparing | |
| 78 | READ_TEMPERATURE_1 with OT_WARN_LIMIT if TEMP_OT_WARNING | |
| 79 | status is set. | |
| 80 | temp1_crit_alarm Chip temperature critical high alarm. Set by comparing | |
| 81 | READ_TEMPERATURE_1 with OT_FAULT_LIMIT if TEMP_OT_FAULT | |
| 82 | status is set. | |
| 70e94b27 GR |
83 | temp1_highest Historical maximum temperature. |
| 84 | temp1_reset_history Write any value to reset history. | |
| 1f234ff1 | 85 | ======================= ======================================================== |