mirror of
https://github.com/torvalds/linux.git
synced 2024-11-29 07:31:29 +00:00
e4db7719d0
Add support for mp2888 device from Monolithic Power Systems, Inc. (MPS) vendor. This is a digital, multi-phase, pulse-width modulation controller. 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. - Can configured VOUT readout in direct or VID format and allows setting of different formats on rails 1 and 2. For VID the following protocols are available: VR13 mode with 5-mV DAC; VR13 mode with 10-mV DAC, IMVP9 mode with 5-mV DAC. Signed-off-by: Vadim Pasternak <vadimp@nvidia.com> Reported-by: kernel test robot <lkp@intel.com> Link: https://lore.kernel.org/r/20210511055619.118104-3-vadimp@nvidia.com [groeck: Add MODULE_IMPORT_NS] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
114 lines
2.1 KiB
ReStructuredText
114 lines
2.1 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0
|
|
|
|
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**
|