a8bfeceb0c
For TI power management chip TPS40422, READ_TEMPERATURE_2 command is supported on page 1 of the chip, but the original driver(pmbus.c) only tried to detect this command on page 0, this will lead to a result that the temperature sensor in page 1 couldn't be detected. This change is to isolate the tps40422 driver from pmbus.c into a solo front-end driver. Signed-off-by: Zhu Laiwen <richard.zhu@nsn.com> [Guenter Roeck: Dropped unnecessary license text (fixes checkpatch warning)] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
64 lines
2 KiB
Text
64 lines
2 KiB
Text
Kernel driver tps40422
|
|
======================
|
|
|
|
Supported chips:
|
|
* TI TPS40422
|
|
Prefix: 'tps40422'
|
|
Addresses scanned: -
|
|
Datasheet: http://www.ti.com/lit/gpn/tps40422
|
|
|
|
Author: Zhu Laiwen <richard.zhu@nsn.com>
|
|
|
|
|
|
Description
|
|
-----------
|
|
|
|
This driver supports TI TPS40422 Dual-Output or Two-Phase Synchronous Buck
|
|
Controller with PMBus
|
|
|
|
The driver is a client driver to the core PMBus driver.
|
|
Please see Documentation/hwmon/pmbus for details on PMBus client drivers.
|
|
|
|
|
|
Usage Notes
|
|
-----------
|
|
|
|
This driver does not auto-detect devices. You will have to instantiate the
|
|
devices explicitly. Please see Documentation/i2c/instantiating-devices for
|
|
details.
|
|
|
|
|
|
Platform data support
|
|
---------------------
|
|
|
|
The driver supports standard PMBus driver platform data.
|
|
|
|
|
|
Sysfs entries
|
|
-------------
|
|
|
|
The following attributes are supported.
|
|
|
|
in[1-2]_label "vout[1-2]"
|
|
in[1-2]_input Measured voltage. From READ_VOUT register.
|
|
in[1-2]_alarm voltage alarm.
|
|
|
|
curr[1-2]_input Measured current. From READ_IOUT register.
|
|
curr[1-2]_label "iout[1-2]"
|
|
curr1_max Maximum current. From IOUT_OC_WARN_LIMIT register.
|
|
curr1_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register.
|
|
curr1_max_alarm Current high alarm. From IOUT_OC_WARN_LIMIT status.
|
|
curr1_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status.
|
|
curr2_alarm Current high alarm. From IOUT_OC_WARNING status.
|
|
|
|
temp1_input Measured temperature. From READ_TEMPERATURE_2 register on page 0.
|
|
temp1_max Maximum temperature. From OT_WARN_LIMIT register.
|
|
temp1_crit Critical high temperature. From OT_FAULT_LIMIT register.
|
|
temp1_max_alarm Chip temperature high alarm. Set by comparing
|
|
READ_TEMPERATURE_2 on page 0 with OT_WARN_LIMIT if TEMP_OT_WARNING
|
|
status is set.
|
|
temp1_crit_alarm Chip temperature critical high alarm. Set by comparing
|
|
READ_TEMPERATURE_2 on page 0 with OT_FAULT_LIMIT if TEMP_OT_FAULT
|
|
status is set.
|
|
temp2_input Measured temperature. From READ_TEMPERATURE_2 register on page 1.
|
|
temp2_alarm Chip temperature alarm on page 1.
|