Kernel driver max8688¶
Supported chips:
Maxim MAX8688
Prefix: 'max8688'
Addresses scanned: -
Author: Guenter Roeck <linux@roeck-us.net>
Description¶
This driver supports hardware monitoring for Maxim MAX8688 Digital Power-Supply Controller/Monitor with PMBus Interface.
The driver is a client driver to the core PMBus driver. Please see Documentation/hwmon/pmbus.rst 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.rst for details.
Platform data support¶
The driver supports standard PMBus driver platform data.
Sysfs entries¶
The following attributes are supported. Limits are read-write; all other attributes are read-only.
in1_label |
"vout1" |
in1_input |
Measured voltage. From READ_VOUT register. |
in1_min |
Minimum Voltage. From VOUT_UV_WARN_LIMIT register. |
in1_max |
Maximum voltage. From VOUT_OV_WARN_LIMIT register. |
in1_lcrit |
Critical minimum Voltage. VOUT_UV_FAULT_LIMIT register. |
in1_crit |
Critical maximum voltage. From VOUT_OV_FAULT_LIMIT register. |
in1_min_alarm |
Voltage low alarm. From VOLTAGE_UV_WARNING status. |
in1_max_alarm |
Voltage high alarm. From VOLTAGE_OV_WARNING status. |
in1_lcrit_alarm |
Voltage critical low alarm. From VOLTAGE_UV_FAULT status. |
in1_crit_alarm |
Voltage critical high alarm. From VOLTAGE_OV_FAULT status. |
in1_highest |
Historical maximum voltage. |
in1_reset_history |
Write any value to reset history. |
curr1_label |
"iout1" |
curr1_input |
Measured current. From READ_IOUT register. |
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 register. |
curr1_crit_alarm |
Current critical high alarm. From IOUT_OC_FAULT status. |
curr1_highest |
Historical maximum current. |
curr1_reset_history |
Write any value to reset history. |
temp1_input |
Measured temperature. From READ_TEMPERATURE_1 register. |
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_1 with OT_WARN_LIMIT if TEMP_OT_WARNING status is set. |
temp1_crit_alarm |
Chip temperature critical high alarm. Set by comparing READ_TEMPERATURE_1 with OT_FAULT_LIMIT if TEMP_OT_FAULT status is set. |
temp1_highest |
Historical maximum temperature. |
temp1_reset_history |
Write any value to reset history. |