| Zhu, Richard \(NSN - CN/Beijing\) | a8bfece | 2014-07-01 07:14:23 +0000 | [diff] [blame] | 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. |