mirror of
https://github.com/torvalds/linux.git
synced 2024-12-04 18:13:04 +00:00
9d8c4f0c01
.../Documentation/hwmon/mp2975.rst:25: WARNING: Unexpected indentation.
.../Documentation/hwmon/mp2975.rst:27: WARNING: Block quote ends without a blank line; unexpected unindent.
.../Documentation/hwmon/mp2975.rst:69: WARNING: Unexpected indentation.
.../Documentation/hwmon/mp2975.rst:70: WARNING: Block quote ends without a blank line; unexpected unindent.
.../Documentation/hwmon/mp2975.rst:72: WARNING: Bullet list ends without a blank line; unexpected unindent.
.../Documentation/hwmon/mp2975.rst: WARNING: document isn't included in any toctree
List blocks should have blank lines before and after them,
in order to be properly parsed.
Fixes: 4beb7a028e9f ("hwmon: (pmbus) Add support for MPS Multi-phase mp2975 controller")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/b02f98d886ab1f5af233f8999c7a15529fc52cdc.1603791716.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
129 lines
3.0 KiB
ReStructuredText
129 lines
3.0 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0
|
|
|
|
Kernel driver mp2975
|
|
====================
|
|
|
|
Supported chips:
|
|
|
|
* MPS MP12254
|
|
|
|
Prefix: 'mp2975'
|
|
|
|
Author:
|
|
|
|
Vadim Pasternak <vadimp@nvidia.com>
|
|
|
|
Description
|
|
-----------
|
|
|
|
This driver implements support for Monolithic Power Systems, Inc. (MPS)
|
|
vendor dual-loop, digital, multi-phase controller MP2975.
|
|
|
|
This device:
|
|
|
|
- Supports up to two power rail.
|
|
- Provides 8 pulse-width modulations (PWMs), and can be configured up
|
|
to 8-phase operation for rail 1 and up to 4-phase operation for rail
|
|
2.
|
|
- Supports two pages 0 and 1 for telemetry and also pages 2 and 3 for
|
|
configuration.
|
|
- 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.
|
|
|
|
Device supports:
|
|
|
|
- SVID interface.
|
|
- AVSBus interface.
|
|
|
|
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.
|
|
Device supports VID and direct formats for reading output voltage.
|
|
The below VID modes are supported: VR12, VR13, IMVP9.
|
|
|
|
The driver provides the next attributes for the current:
|
|
|
|
- for current in: input, maximum alarm;
|
|
- for current out input, maximum alarm and highest values;
|
|
- for phase current: input and label.
|
|
attributes.
|
|
|
|
The driver exports the following attributes via the 'sysfs' files, where
|
|
|
|
- 'n' is number of telemetry pages (from 1 to 2);
|
|
- 'k' is number of configured phases (from 1 to 8);
|
|
- indexes 1, 1*n for "iin";
|
|
- indexes n+1, n+2 for "iout";
|
|
- indexes 2*n+1 ... 2*n + k for phases.
|
|
|
|
**curr[1-{2n}]_alarm**
|
|
|
|
**curr[{n+1}-{n+2}]_highest**
|
|
|
|
**curr[1-{2n+k}]_input**
|
|
|
|
**curr[1-{2n+k}]_label**
|
|
|
|
The driver provides the next attributes for the voltage:
|
|
|
|
- for voltage in: input, high critical threshold, high critical alarm, all only
|
|
from page 0;
|
|
- for voltage out: input, low and high critical thresholds, low and high
|
|
critical alarms, from pages 0 and 1;
|
|
|
|
The driver exports the following attributes via the 'sysfs' files, where
|
|
|
|
- 'n' is number of telemetry pages (from 1 to 2);
|
|
- indexes 1 for "iin";
|
|
- indexes n+1, n+2 for "vout";
|
|
|
|
**in[1-{2n+1}]_crit**
|
|
|
|
**in[1-{2n+1}]_crit_alarm**
|
|
|
|
**in[1-{2n+1}]_input**
|
|
|
|
**in[1-{2n+1}]_label**
|
|
|
|
**in[2-{n+1}]_lcrit**
|
|
|
|
**in[2-{n+1}1_lcrit_alarm**
|
|
|
|
The driver provides the next attributes for the power:
|
|
|
|
- for power in alarm and input.
|
|
- for power out: highest and input.
|
|
|
|
The driver exports the following attributes via the 'sysfs' files, where
|
|
|
|
- 'n' is number of telemetry pages (from 1 to 2);
|
|
- indexes 1 for "pin";
|
|
- indexes n+1, n+2 for "pout";
|
|
|
|
**power1_alarm**
|
|
|
|
**power[2-{n+1}]_highest**
|
|
|
|
**power[1-{2n+1}]_input**
|
|
|
|
**power[1-{2n+1}]_label**
|
|
|
|
The driver provides the next attributes for the temperature (only from page 0):
|
|
|
|
|
|
**temp1_crit**
|
|
|
|
**temp1_crit_alarm**
|
|
|
|
**temp1_input**
|
|
|
|
**temp1_max**
|
|
|
|
**temp1_max_alarm**
|