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 Kernel driver 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 How to instantiate I2C devices 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. |