projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| a8bfeceb ZRNCB |
1 | Kernel driver tps40422 |
| 2 | ====================== | |
| 3 | ||
| 4 | Supported chips: | |
| 5 | * TI TPS40422 | |
| 6 | Prefix: 'tps40422' | |
| 7 | Addresses scanned: - | |
| 8 | Datasheet: http://www.ti.com/lit/gpn/tps40422 | |
| 9 | ||
| 10 | Author: Zhu Laiwen <richard.zhu@nsn.com> | |
| 11 | ||
| 12 | ||
| 13 | Description | |
| 14 | ----------- | |
| 15 | ||
| 16 | This driver supports TI TPS40422 Dual-Output or Two-Phase Synchronous Buck | |
| 17 | Controller with PMBus | |
| 18 | ||
| 19 | The driver is a client driver to the core PMBus driver. | |
| 20 | Please see Documentation/hwmon/pmbus for details on PMBus client drivers. | |
| 21 | ||
| 22 | ||
| 23 | Usage Notes | |
| 24 | ----------- | |
| 25 | ||
| 26 | This driver does not auto-detect devices. You will have to instantiate the | |
| 27 | devices explicitly. Please see Documentation/i2c/instantiating-devices for | |
| 28 | details. | |
| 29 | ||
| 30 | ||
| 31 | Platform data support | |
| 32 | --------------------- | |
| 33 | ||
| 34 | The driver supports standard PMBus driver platform data. | |
| 35 | ||
| 36 | ||
| 37 | Sysfs entries | |
| 38 | ------------- | |
| 39 | ||
| 40 | The following attributes are supported. | |
| 41 | ||
| 42 | in[1-2]_label "vout[1-2]" | |
| 43 | in[1-2]_input Measured voltage. From READ_VOUT register. | |
| 44 | in[1-2]_alarm voltage alarm. | |
| 45 | ||
| 46 | curr[1-2]_input Measured current. From READ_IOUT register. | |
| 47 | curr[1-2]_label "iout[1-2]" | |
| 48 | curr1_max Maximum current. From IOUT_OC_WARN_LIMIT register. | |
| 49 | curr1_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register. | |
| 50 | curr1_max_alarm Current high alarm. From IOUT_OC_WARN_LIMIT status. | |
| 51 | curr1_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status. | |
| 52 | curr2_alarm Current high alarm. From IOUT_OC_WARNING status. | |
| 53 | ||
| 54 | temp1_input Measured temperature. From READ_TEMPERATURE_2 register on page 0. | |
| 55 | temp1_max Maximum temperature. From OT_WARN_LIMIT register. | |
| 56 | temp1_crit Critical high temperature. From OT_FAULT_LIMIT register. | |
| 57 | temp1_max_alarm Chip temperature high alarm. Set by comparing | |
| 58 | READ_TEMPERATURE_2 on page 0 with OT_WARN_LIMIT if TEMP_OT_WARNING | |
| 59 | status is set. | |
| 60 | temp1_crit_alarm Chip temperature critical high alarm. Set by comparing | |
| 61 | READ_TEMPERATURE_2 on page 0 with OT_FAULT_LIMIT if TEMP_OT_FAULT | |
| 62 | status is set. | |
| 63 | temp2_input Measured temperature. From READ_TEMPERATURE_2 register on page 1. | |
| 64 | temp2_alarm Chip temperature alarm on page 1. |