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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>
65 lines
2.0 KiB
Plaintext
65 lines
2.0 KiB
Plaintext
Kernel driver tps40422
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======================
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Supported chips:
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* TI TPS40422
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Prefix: 'tps40422'
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Addresses scanned: -
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Datasheet: http://www.ti.com/lit/gpn/tps40422
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Author: Zhu Laiwen <richard.zhu@nsn.com>
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Description
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-----------
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This driver supports TI TPS40422 Dual-Output or Two-Phase Synchronous Buck
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Controller with PMBus
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The driver is a client driver to the core PMBus driver.
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Please see Documentation/hwmon/pmbus for details on PMBus client drivers.
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Usage Notes
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-----------
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This driver does not auto-detect devices. You will have to instantiate the
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devices explicitly. Please see Documentation/i2c/instantiating-devices for
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details.
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Platform data support
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---------------------
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The driver supports standard PMBus driver platform data.
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Sysfs entries
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-------------
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The following attributes are supported.
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in[1-2]_label "vout[1-2]"
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in[1-2]_input Measured voltage. From READ_VOUT register.
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in[1-2]_alarm voltage alarm.
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curr[1-2]_input Measured current. From READ_IOUT register.
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curr[1-2]_label "iout[1-2]"
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curr1_max Maximum current. From IOUT_OC_WARN_LIMIT register.
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curr1_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register.
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curr1_max_alarm Current high alarm. From IOUT_OC_WARN_LIMIT status.
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curr1_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status.
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curr2_alarm Current high alarm. From IOUT_OC_WARNING status.
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temp1_input Measured temperature. From READ_TEMPERATURE_2 register on page 0.
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temp1_max Maximum temperature. From OT_WARN_LIMIT register.
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temp1_crit Critical high temperature. From OT_FAULT_LIMIT register.
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temp1_max_alarm Chip temperature high alarm. Set by comparing
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READ_TEMPERATURE_2 on page 0 with OT_WARN_LIMIT if TEMP_OT_WARNING
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status is set.
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temp1_crit_alarm Chip temperature critical high alarm. Set by comparing
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READ_TEMPERATURE_2 on page 0 with OT_FAULT_LIMIT if TEMP_OT_FAULT
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status is set.
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temp2_input Measured temperature. From READ_TEMPERATURE_2 register on page 1.
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temp2_alarm Chip temperature alarm on page 1.
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