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hwmon: (pmbus) Add support for MPS Multi-phase mp2888 controller
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>
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‎Documentation/hwmon/mp2888.rst‎

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.. SPDX-License-Identifier: GPL-2.0
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Kernel driver mp2888
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====================
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Supported chips:
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* MPS MP12254
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Prefix: 'mp2888'
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Author:
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Vadim Pasternak <vadimp@nvidia.com>
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Description
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-----------
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This driver implements support for Monolithic Power Systems, Inc. (MPS)
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vendor dual-loop, digital, multi-phase controller MP2888.
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This device: supports:
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- One power rail.
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- Programmable Multi-Phase up to 10 Phases.
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- PWM-VID Interface
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- One pages 0 for telemetry.
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- Programmable pins for PMBus Address.
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- Built-In EEPROM to Store Custom Configurations.
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Device complaint with:
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- PMBus rev 1.3 interface.
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Device supports direct format for reading output current, output voltage,
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input and output power and temperature.
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Device supports linear format for reading input voltage and input power.
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The driver provides the next attributes for the current:
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- for current out input and maximum alarm;
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- for phase current: input and label.
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The driver exports the following attributes via the 'sysfs' files, where:
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- 'n' is number of configured phases (from 1 to 10);
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- index 1 for "iout";
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- indexes 2 ... 1 + n for phases.
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**curr[1-{1+n}]_input**
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**curr[1-{1+n}]_label**
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**curr1_max**
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**curr1_max_alarm**
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The driver provides the next attributes for the voltage:
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- for voltage in: input, low and high critical thresholds, low and high
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critical alarms;
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- for voltage out: input and high alarm;
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The driver exports the following attributes via the 'sysfs' files, where
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**in1_crit**
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**in1_crit_alarm**
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**in1_input**
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**in1_label**
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**in1_min**
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**in1_min_alarm**
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**in2_alarm**
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**in2_input**
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**in2_label**
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The driver provides the next attributes for the power:
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- for power in alarm and input.
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- for power out: cap, cap alarm an input.
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The driver exports the following attributes via the 'sysfs' files, where
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- indexes 1 for "pin";
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- indexes 2 for "pout";
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**power1_alarm**
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**power1_input**
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**power1_label**
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**power2_input**
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**power2_label**
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**power2_max**
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**power2_max_alarm**
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The driver provides the next attributes for the temperature:
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**temp1_input**
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**temp1_max**
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**temp1_max_alarm**

‎drivers/hwmon/pmbus/Kconfig‎

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This driver can also be built as a module. If so, the module will
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be called max8688.
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config SENSORS_MP2888
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tristate "MPS MP2888"
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help
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If you say yes here you get hardware monitoring support for MPS
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MP2888 Digital, Multi-Phase, Pulse-Width Modulation Controller.
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This driver can also be built as a module. If so, the module will
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be called mp2888.
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config SENSORS_MP2975
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tristate "MPS MP2975"
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help

‎drivers/hwmon/pmbus/Makefile‎

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obj-$(CONFIG_SENSORS_MAX31785) += max31785.o
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obj-$(CONFIG_SENSORS_MAX34440) += max34440.o
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obj-$(CONFIG_SENSORS_MAX8688) += max8688.o
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obj-$(CONFIG_SENSORS_MP2888) += mp2888.o
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obj-$(CONFIG_SENSORS_MP2975) += mp2975.o
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obj-$(CONFIG_SENSORS_PM6764TR) += pm6764tr.o
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obj-$(CONFIG_SENSORS_PXE1610) += pxe1610.o

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