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Add support for mp2856/mp2857 device from Monolithic Power Systems, Inc. (MPS) vendor. This is a dual-loop, digital, multi-phase, modulation controller. Signed-off-by: Peter Yin <peteryin.openbmc@gmail.com> Signed-off-by: Potin Lai <potin.lai.pt@gmail.com> Link: https://lore.kernel.org/r/20231211160519.21254-3-potin.lai.pt@gmail.com [groeck: Fix checkpatch issues, use i2c_get_match_data()] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
99 lines
1.9 KiB
ReStructuredText
99 lines
1.9 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0
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Kernel driver mp2856
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====================
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Supported chips:
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* MPS MP2856
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Prefix: 'mp2856'
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* MPS MP2857
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Prefix: 'mp2857'
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Author:
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Peter Yin <peter.yin@quantatw.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 MP2856/MP2857
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This device:
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- Supports up to two power rail.
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- Supports two pages 0 and 1 for and also pages 2 for configuration.
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- Can configured VOUT readout in direct or VID format and allows
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setting of different formats on rails 1 and 2. For VID the following
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protocols are available: AMD SVI3 mode with 5-mV/LSB.
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Device supports:
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- SVID interface.
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- AVSBus interface.
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Device compliant 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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Device supports VID and direct formats for reading output voltage.
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The below VID modes are supported: AMD SVI3.
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The driver provides the following sysfs attributes for current measurements:
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- indexes 1 for "iin";
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- indexes 2, 3 for "iout";
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**curr[1-3]_alarm**
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**curr[1-3]_input**
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**curr[1-3]_label**
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The driver provides the following sysfs attributes for voltage measurements.
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- indexes 1 for "vin";
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- indexes 2, 3 for "vout";
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**in[1-3]_crit**
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**in[1-3]_crit_alarm**
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**in[1-3]_input**
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**in[1-3]_label**
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**in[1-3]_lcrit**
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**in[1-3]_lcrit_alarm**
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The driver provides the following sysfs attributes for power measurements.
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- indexes 1 for "pin";
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- indexes 2, 3 for "pout";
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**power[1-3]_alarm**
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**power[1-3]_input**
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**power[1-3]_label**
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The driver provides the following sysfs attributes for temperature measurements.
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**temp[1-2]_crit**
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**temp[1-2]_crit_alarm**
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**temp[1-2]_input**
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**temp[1-2]_max**
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**temp[1-2]_max_alarm**
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