2020-01-13 23:08:41 +08:00
|
|
|
.. SPDX-License-Identifier: GPL-2.0
|
|
|
|
|
|
|
|
|
|
Kernel driver xdpe122
|
|
|
|
|
=====================
|
|
|
|
|
|
|
|
|
|
Supported chips:
|
|
|
|
|
|
|
|
|
|
* Infineon XDPE12254
|
|
|
|
|
|
|
|
|
|
Prefix: 'xdpe12254'
|
|
|
|
|
|
|
|
|
|
* Infineon XDPE12284
|
|
|
|
|
|
|
|
|
|
Prefix: 'xdpe12284'
|
|
|
|
|
|
|
|
|
|
Authors:
|
|
|
|
|
|
|
|
|
|
Vadim Pasternak <vadimp@mellanox.com>
|
|
|
|
|
|
|
|
|
|
Description
|
|
|
|
|
-----------
|
|
|
|
|
|
|
|
|
|
This driver implements support for Infineon Multi-phase XDPE122 family
|
|
|
|
|
dual loop voltage regulators.
|
|
|
|
|
The family includes XDPE12284 and XDPE12254 devices.
|
|
|
|
|
The devices from this family complaint with:
|
2020-02-17 12:44:09 +08:00
|
|
|
|
2020-01-13 23:08:41 +08:00
|
|
|
- Intel VR13 and VR13HC rev 1.3, IMVP8 rev 1.2 and IMPVP9 rev 1.3 DC-DC
|
|
|
|
|
converter specification.
|
|
|
|
|
- Intel SVID rev 1.9. protocol.
|
|
|
|
|
- PMBus rev 1.3 interface.
|
|
|
|
|
|
|
|
|
|
Devices support linear format for reading input voltage, input and output current,
|
|
|
|
|
input and output power and temperature.
|
|
|
|
|
Device supports VID format for reading output voltage. The below modes are
|
|
|
|
|
supported:
|
|
|
|
|
- VR12.0 mode, 5-mV DAC - 0x01.
|
|
|
|
|
- VR12.5 mode, 10-mV DAC - 0x02.
|
|
|
|
|
- IMVP9 mode, 5-mV DAC - 0x03.
|
|
|
|
|
- AMD mode 6.25mV - 0x10.
|
|
|
|
|
|
|
|
|
|
Devices support two pages for telemetry.
|
|
|
|
|
|
|
|
|
|
The driver provides for current: input, maximum and critical thresholds
|
|
|
|
|
and maximum and critical alarms. Critical thresholds and critical alarm are
|
|
|
|
|
supported only for current output.
|
|
|
|
|
The driver exports the following attributes for via the sysfs files, where
|
|
|
|
|
indexes 1, 2 are for "iin" and 3, 4 for "iout":
|
|
|
|
|
|
|
|
|
|
**curr[3-4]_crit**
|
|
|
|
|
|
|
|
|
|
**curr[3-4]_crit_alarm**
|
|
|
|
|
|
|
|
|
|
**curr[1-4]_input**
|
|
|
|
|
|
|
|
|
|
**curr[1-4]_label**
|
|
|
|
|
|
|
|
|
|
**curr[1-4]_max**
|
|
|
|
|
|
|
|
|
|
**curr[1-4]_max_alarm**
|
|
|
|
|
|
|
|
|
|
The driver provides for voltage: input, critical and low critical thresholds
|
|
|
|
|
and critical and low critical alarms.
|
|
|
|
|
The driver exports the following attributes for via the sysfs files, where
|
|
|
|
|
indexes 1, 2 are for "vin" and 3, 4 for "vout":
|
|
|
|
|
|
|
|
|
|
**in[1-4]_crit**
|
|
|
|
|
|
|
|
|
|
**in[1-4_crit_alarm**
|
|
|
|
|
|
|
|
|
|
**in[1-4]_input**
|
|
|
|
|
|
|
|
|
|
**in[1-4_label**
|
|
|
|
|
|
|
|
|
|
**in[1-4]_lcrit**
|
|
|
|
|
|
|
|
|
|
**in[1-41_lcrit_alarm**
|
|
|
|
|
|
|
|
|
|
The driver provides for power: input and alarms. Power alarm is supported only
|
|
|
|
|
for power input.
|
|
|
|
|
The driver exports the following attributes for via the sysfs files, where
|
|
|
|
|
indexes 1, 2 are for "pin" and 3, 4 for "pout":
|
|
|
|
|
|
|
|
|
|
**power[1-2]_alarm**
|
|
|
|
|
|
|
|
|
|
**power[1-4]_input**
|
|
|
|
|
|
|
|
|
|
**power[1-4]_label**
|
|
|
|
|
|
|
|
|
|
The driver provides for temperature: input, maximum and critical thresholds
|
|
|
|
|
and maximum and critical alarms.
|
|
|
|
|
The driver exports the following attributes for via the sysfs files:
|
|
|
|
|
|
|
|
|
|
**temp[1-2]_crit**
|
|
|
|
|
|
|
|
|
|
**temp[1-2]_crit_alarm**
|
|
|
|
|
|
|
|
|
|
**temp[1-2]_input**
|
|
|
|
|
|
|
|
|
|
**temp[1-2]_max**
|
|
|
|
|
|
|
|
|
|
**temp[1-2]_max_alarm**
|
