mirror of
https://github.com/torvalds/linux.git
synced 2024-11-10 14:11:52 +00:00
e10d9e4ca1
Add support for Analog Devices LT7182S Dual Channel 6A, 20V PolyPhase Step-Down Silent Switcher with Digital Power System Management. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
93 lines
2.6 KiB
ReStructuredText
93 lines
2.6 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0
|
|
|
|
Kernel driver lt7182s
|
|
=====================
|
|
|
|
Supported chips:
|
|
|
|
* ADI LT7182S
|
|
|
|
Prefix: 'lt7182s'
|
|
|
|
Addresses scanned: -
|
|
|
|
Datasheet: https://www.analog.com/en/products/lt7182s.html
|
|
|
|
Author: Guenter Roeck <linux@roeck-us.net>
|
|
|
|
|
|
Description
|
|
-----------
|
|
|
|
LT7182S is a Dual Channel 6A, 20V PolyPhase Step-Down Silent Switcher with
|
|
Digital Power System Management support.
|
|
|
|
|
|
Usage Notes
|
|
-----------
|
|
|
|
This driver does not probe for PMBus devices. You will have to instantiate
|
|
devices explicitly.
|
|
|
|
Example: the following commands will load the driver for a LT7182S
|
|
at address 0x4f on I2C bus #4::
|
|
|
|
# modprobe lt7182s
|
|
# echo lt7182s 0x4f > /sys/bus/i2c/devices/i2c-4/new_device
|
|
|
|
It can also be instantiated by declaring an entry in device tree.
|
|
|
|
|
|
Sysfs attributes
|
|
----------------
|
|
|
|
======================= ====================================
|
|
curr[1-2]_label "iin[12]"
|
|
curr[1-2]_input Measured input current
|
|
curr[1-2]_max Maximum input current
|
|
curr[1-2]_max_alarm Current high alarm
|
|
|
|
curr[3-4]_label "iout[1-2]"
|
|
curr[3-4]_input Measured output current
|
|
curr[3-4]_highest Highest measured output current
|
|
curr[3-4]_max Maximum output current
|
|
curr[3-4]_max_alarm Output current high alarm
|
|
|
|
in[1-2]_label "vin[12]"
|
|
in[1-2]_input Measured input voltage
|
|
in[1-2]_highest Highest measured input voltage
|
|
in[1-2]_crit Critical maximum input voltage
|
|
in[1-2]_crit_alarm Input voltage critical high alarm
|
|
in[1-2]_min Minimum input voltage
|
|
in[1-2]_min_alarm Input voltage low alarm
|
|
in[1-2]_rated_min Rated minimum input voltage
|
|
in[1-2]_rated_max Rated maximum input voltage
|
|
in1_reset_history Write to reset history for all attributes
|
|
|
|
in[3-5]_label "vmon[1-3]"
|
|
in[3-5]_input Measured voltage on ITH1/ITH2/EXTVCC pins
|
|
Only available if enabled with MFR_ADC_CONTROL_LT7182S
|
|
command.
|
|
|
|
in[3-4|6-7]_label "vout[1-2]"
|
|
in[3-4|6-7]_input Measured output voltage
|
|
in[3-4|6-7]_highest Highest measured output voltage
|
|
in[3-4|6-7]_lcrit Critical minimum output voltage
|
|
in[3-4|6-7]_lcrit_alarm Output voltage critical low alarm
|
|
in[3-4|6-7]_min Minimum output voltage
|
|
in[3-4|6-7]_max_alarm Output voltage low alarm
|
|
in[3-4|6-7]_max Maximum output voltage
|
|
in[3-4|6-7]_max_alarm Output voltage high alarm
|
|
in[3-4|6-7]_crit Critical maximum output voltage
|
|
in[3-4|6-7]_crit_alarm Output voltage critical high alarm
|
|
|
|
power[1-2]_label "pout[1-2]"
|
|
power[1-2]_input Measured output power
|
|
|
|
temp1_input Measured temperature
|
|
temp1_crit Critical high temperature
|
|
temp1_crit_alarm Chip temperature critical high alarm
|
|
temp1_max Maximum temperature
|
|
temp1_max_alarm Chip temperature high alarm
|
|
======================= ====================================
|