mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 01:54:09 +08:00
f20b4a9311
Add support for mpq8785 device from Monolithic Power Systems, Inc. (MPS) vendor. This is synchronous step-down controller. Signed-off-by: Charles Hsu <ythsu0511@gmail.com> Link: https://lore.kernel.org/r/20240131074822.2962078-2-ythsu0511@gmail.com [groeck: probe_new --> probe; add MODULE_IMPORT_NS(PMBUS)] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
95 lines
1.9 KiB
ReStructuredText
95 lines
1.9 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0-only
|
|
|
|
Kernel driver mpq8785
|
|
=======================
|
|
|
|
Supported chips:
|
|
|
|
* MPS MPQ8785
|
|
|
|
Prefix: 'mpq8785'
|
|
|
|
Author: Charles Hsu <ythsu0511@gmail.com>
|
|
|
|
Description
|
|
-----------
|
|
|
|
The MPQ8785 is a fully integrated, PMBus-compatible, high-frequency, synchronous
|
|
buck converter. The MPQ8785 offers a very compact solution that achieves up to
|
|
40A output current per phase, with excellent load and line regulation over a
|
|
wide input supply range. The MPQ8785 operates at high efficiency over a wide
|
|
output current load range.
|
|
|
|
The PMBus interface provides converter configurations and key parameters
|
|
monitoring.
|
|
|
|
The MPQ8785 adopts MPS's proprietary multi-phase digital constant-on-time (MCOT)
|
|
control, which provides fast transient response and eases loop stabilization.
|
|
The MCOT scheme also allows multiple MPQ8785 devices to be connected in parallel
|
|
with excellent current sharing and phase interleaving for high-current
|
|
applications.
|
|
|
|
Fully integrated protection features include over-current protection (OCP),
|
|
over-voltage protection (OVP), under-voltage protection (UVP), and
|
|
over-temperature protection (OTP).
|
|
|
|
The MPQ8785 requires a minimal number of readily available, standard external
|
|
components, and is available in a TLGA (5mmx6mm) package.
|
|
|
|
Device compliant with:
|
|
|
|
- PMBus rev 1.3 interface.
|
|
|
|
The driver exports the following attributes via the 'sysfs' files
|
|
for input voltage:
|
|
|
|
**in1_input**
|
|
|
|
**in1_label**
|
|
|
|
**in1_max**
|
|
|
|
**in1_max_alarm**
|
|
|
|
**in1_min**
|
|
|
|
**in1_min_alarm**
|
|
|
|
**in1_crit**
|
|
|
|
**in1_crit_alarm**
|
|
|
|
The driver provides the following attributes for output voltage:
|
|
|
|
**in2_input**
|
|
|
|
**in2_label**
|
|
|
|
**in2_alarm**
|
|
|
|
The driver provides the following attributes for output current:
|
|
|
|
**curr1_input**
|
|
|
|
**curr1_label**
|
|
|
|
**curr1_max**
|
|
|
|
**curr1_max_alarm**
|
|
|
|
**curr1_crit**
|
|
|
|
**curr1_crit_alarm**
|
|
|
|
The driver provides the following attributes for temperature:
|
|
|
|
**temp1_input**
|
|
|
|
**temp1_max**
|
|
|
|
**temp1_max_alarm**
|
|
|
|
**temp1_crit**
|
|
|
|
**temp1_crit_alarm**
|