| .. SPDX-License-Identifier: GPL-2.0 |
| |
| Kernel driver sq24860 |
| ===================== |
| |
| Supported chips: |
| |
| * Silergy SQ24860 |
| |
| Prefix: 'sq24860' |
| |
| Author: |
| |
| Ziming Zhu <ziming.zhu@silergycorp.com> |
| |
| Description |
| ------------ |
| |
| This driver implements support for the Silergy SQ24860 eFuse. The device is an |
| integrated circuit protection and power management device with a PMBus |
| interface. |
| |
| The device supports direct format for reading input voltage, output voltage, |
| auxiliary voltage, input current, input power, and temperature. |
| |
| The current and power measurement scale depends on the resistor connected |
| between the IMON pin and ground. The resistor value can be configured with the |
| ``silergy,rimon-micro-ohms`` device tree property. See |
| ``Documentation/devicetree/bindings/hwmon/pmbus/silergy,sq24860.yaml`` for details. |
| |
| Due to the specificities of the chip, all history reset attributes are tied |
| together. Resetting the history of one sensor resets the history of all sensors. |
| |
| Sysfs entries |
| ------------- |
| |
| The following attributes are supported. Limits are read-write; all other |
| attributes are read-only. |
| |
| ======================= ====================================================== |
| in1_label "vin" |
| in1_input Measured input voltage. |
| in1_average Average measured input voltage. |
| in1_min Minimum input voltage limit. |
| in1_lcrit Critical low input voltage limit. |
| in1_max Maximum input voltage limit. |
| in1_crit Critical high input voltage limit. |
| in1_min_alarm Input voltage low warning alarm. |
| in1_lcrit_alarm Input voltage low fault alarm. |
| in1_max_alarm Input voltage high warning alarm. |
| in1_crit_alarm Input voltage high fault alarm. |
| in1_highest Historical maximum input voltage. |
| in1_lowest Historical minimum input voltage. |
| in1_reset_history Write any value to reset history. |
| |
| in2_label "vmon" |
| in2_input Measured auxiliary input voltage. |
| |
| in3_label "vout1" |
| in3_input Measured output voltage. |
| in3_average Average measured output voltage. |
| in3_min Minimum output voltage limit. |
| in3_min_alarm Output voltage low alarm. |
| in3_lowest Historical minimum output voltage. |
| in3_reset_history Write any value to reset history. |
| |
| curr1_label "iin" |
| curr1_input Measured input current. |
| curr1_average Average measured input current. |
| curr1_max Maximum input current warning limit. |
| curr1_crit Critical input over-current fault limit. |
| curr1_max_alarm Input current warning alarm. |
| curr1_crit_alarm Input over-current fault alarm. |
| curr1_highest Historical maximum input current. |
| curr1_reset_history Write any value to reset history. |
| |
| power1_label "pin" |
| power1_input Measured input power. |
| power1_average Average measured input power. |
| power1_max Maximum input power warning limit. |
| power1_alarm Input power warning alarm. |
| power1_input_highest Historical maximum input power. |
| power1_reset_history Write any value to reset history. |
| |
| temp1_input Measured temperature. |
| temp1_average Average measured temperature. |
| temp1_max Maximum temperature warning limit. |
| temp1_crit Critical temperature fault limit. |
| temp1_max_alarm Temperature warning alarm. |
| temp1_crit_alarm Temperature fault alarm. |
| temp1_highest Historical maximum temperature. |
| temp1_reset_history Write any value to reset history. |
| |
| samples Number of samples used for average values. |
| ======================= ====================================================== |
| |
