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107 lines
2.4 KiB
ReStructuredText
107 lines
2.4 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0
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Kernel driver xdpe122
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=====================
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Supported chips:
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* Infineon XDPE11280
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Prefix: 'xdpe11280'
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* Infineon XDPE12254
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Prefix: 'xdpe12254'
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* Infineon XDPE12284
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Prefix: 'xdpe12284'
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Authors:
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Vadim Pasternak <vadimp@mellanox.com>
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Description
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-----------
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This driver implements support for Infineon Multi-phase XDPE112 and XDPE122
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family dual loop voltage regulators.
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These families include XDPE11280, XDPE12284 and XDPE12254 devices.
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The devices from this family compliant with:
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- Intel VR13 and VR13HC rev 1.3, IMVP8 rev 1.2 and IMPVP9 rev 1.3 DC-DC
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converter specification.
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- Intel SVID rev 1.9. protocol.
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- PMBus rev 1.3 interface.
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Devices support linear format for reading input voltage, input and output current,
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input and output power and temperature.
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Device supports VID format for reading output voltage. The below modes are
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supported:
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- VR12.0 mode, 5-mV DAC - 0x01.
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- VR12.5 mode, 10-mV DAC - 0x02.
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- IMVP9 mode, 5-mV DAC - 0x03.
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- AMD mode 6.25mV - 0x10.
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Devices support two pages for telemetry.
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The driver provides for current: input, maximum and critical thresholds
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and maximum and critical alarms. Critical thresholds and critical alarm are
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supported only for current output.
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The driver exports the following attributes for via the sysfs files, where
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indexes 1, 2 are for "iin" and 3, 4 for "iout":
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**curr[3-4]_crit**
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**curr[3-4]_crit_alarm**
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**curr[1-4]_input**
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**curr[1-4]_label**
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**curr[1-4]_max**
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**curr[1-4]_max_alarm**
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The driver provides for voltage: input, critical and low critical thresholds
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and critical and low critical alarms.
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The driver exports the following attributes for via the sysfs files, where
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indexes 1, 2 are for "vin" and 3, 4 for "vout":
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**in[1-4]_crit**
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**in[1-4_crit_alarm**
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**in[1-4]_input**
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**in[1-4_label**
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**in[1-4]_lcrit**
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**in[1-41_lcrit_alarm**
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The driver provides for power: input and alarms. Power alarm is supported only
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for power input.
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The driver exports the following attributes for via the sysfs files, where
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indexes 1, 2 are for "pin" and 3, 4 for "pout":
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**power[1-2]_alarm**
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**power[1-4]_input**
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**power[1-4]_label**
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The driver provides for temperature: input, maximum and critical thresholds
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and maximum and critical alarms.
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The driver exports the following attributes for via the sysfs files:
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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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