Kernel driver mp2888¶
Supported chips:
MPS MP12254
Prefix: ‘mp2888’
Author:
Vadim Pasternak <vadimp@nvidia.com>
Description¶
This driver implements support for Monolithic Power Systems, Inc. (MPS) vendor dual-loop, digital, multi-phase controller MP2888.
This device: supports:
One power rail.
Programmable Multi-Phase up to 10 Phases.
PWM-VID Interface
One pages 0 for telemetry.
Programmable pins for PMBus Address.
Built-In EEPROM to Store Custom Configurations.
Device complaint with:
PMBus rev 1.3 interface.
Device supports direct format for reading output current, output voltage, input and output power and temperature. Device supports linear format for reading input voltage and input power.
The driver provides the next attributes for the current:
for current out input and maximum alarm;
for phase current: input and label.
The driver exports the following attributes via the ‘sysfs’ files, where:
‘n’ is number of configured phases (from 1 to 10);
index 1 for “iout”;
indexes 2 ... 1 + n for phases.
curr[1-{1+n}]_input
curr[1-{1+n}]_label
curr1_max
curr1_max_alarm
The driver provides the next attributes for the voltage:
for voltage in: input, low and high critical thresholds, low and high critical alarms;
for voltage out: input and high alarm;
The driver exports the following attributes via the ‘sysfs’ files, where
in1_crit
in1_crit_alarm
in1_input
in1_label
in1_min
in1_min_alarm
in2_alarm
in2_input
in2_label
The driver provides the next attributes for the power:
for power in alarm and input.
for power out: cap, cap alarm an input.
The driver exports the following attributes via the ‘sysfs’ files, where - indexes 1 for “pin”; - indexes 2 for “pout”;
power1_alarm
power1_input
power1_label
power2_input
power2_label
power2_max
power2_max_alarm
The driver provides the next attributes for the temperature:
temp1_input
temp1_max
temp1_max_alarm