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>
2.0 KiB
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.