128 lines
3.7 KiB
ReStructuredText
128 lines
3.7 KiB
ReStructuredText
Kernel driver max16065
|
|
======================
|
|
|
|
|
|
Supported chips:
|
|
|
|
* Maxim MAX16065, MAX16066
|
|
|
|
Prefixes: 'max16065', 'max16066'
|
|
|
|
Addresses scanned: -
|
|
|
|
Datasheet:
|
|
|
|
http://datasheets.maxim-ic.com/en/ds/MAX16065-MAX16066.pdf
|
|
|
|
* Maxim MAX16067
|
|
|
|
Prefix: 'max16067'
|
|
|
|
Addresses scanned: -
|
|
|
|
Datasheet:
|
|
|
|
http://datasheets.maxim-ic.com/en/ds/MAX16067.pdf
|
|
|
|
* Maxim MAX16068
|
|
|
|
Prefix: 'max16068'
|
|
|
|
Addresses scanned: -
|
|
|
|
Datasheet:
|
|
|
|
http://datasheets.maxim-ic.com/en/ds/MAX16068.pdf
|
|
|
|
* Maxim MAX16070/MAX16071
|
|
|
|
Prefixes: 'max16070', 'max16071'
|
|
|
|
Addresses scanned: -
|
|
|
|
Datasheet:
|
|
|
|
http://datasheets.maxim-ic.com/en/ds/MAX16070-MAX16071.pdf
|
|
|
|
Author: Guenter Roeck <linux@roeck-us.net>
|
|
|
|
|
|
Description
|
|
-----------
|
|
|
|
[From datasheets] The MAX16065/MAX16066 flash-configurable system managers
|
|
monitor and sequence multiple system voltages. The MAX16065/MAX16066 can also
|
|
accurately monitor (+/-2.5%) one current channel using a dedicated high-side
|
|
current-sense amplifier. The MAX16065 manages up to twelve system voltages
|
|
simultaneously, and the MAX16066 manages up to eight supply voltages.
|
|
|
|
The MAX16067 flash-configurable system manager monitors and sequences multiple
|
|
system voltages. The MAX16067 manages up to six system voltages simultaneously.
|
|
|
|
The MAX16068 flash-configurable system manager monitors and manages up to six
|
|
system voltages simultaneously.
|
|
|
|
The MAX16070/MAX16071 flash-configurable system monitors supervise multiple
|
|
system voltages. The MAX16070/MAX16071 can also accurately monitor (+/-2.5%)
|
|
one current channel using a dedicated high-side current-sense amplifier. The
|
|
MAX16070 monitors up to twelve system voltages simultaneously, and the MAX16071
|
|
monitors up to eight supply voltages.
|
|
|
|
Each monitored channel has its own low and high critical limits. MAX16065,
|
|
MAX16066, MAX16070, and MAX16071 support an additional limit which is
|
|
configurable as either low or high secondary limit. MAX16065, MAX16066,
|
|
MAX16070, and MAX16071 also support supply current monitoring.
|
|
|
|
|
|
Usage Notes
|
|
-----------
|
|
|
|
This driver does not probe for devices, since there is no register which
|
|
can be safely used to identify the chip. You will have to instantiate
|
|
the devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for
|
|
details.
|
|
|
|
WARNING: Do not access chip registers using the i2cdump command, and do not use
|
|
any of the i2ctools commands on a command register (0xa5 to 0xac). The chips
|
|
supported by this driver interpret any access to a command register (including
|
|
read commands) as request to execute the command in question. This may result in
|
|
power loss, board resets, and/or Flash corruption. Worst case, your board may
|
|
turn into a brick.
|
|
|
|
|
|
Sysfs entries
|
|
-------------
|
|
|
|
======================= ========================================================
|
|
in[0-11]_input Input voltage measurements.
|
|
|
|
in12_input Voltage on CSP (Current Sense Positive) pin.
|
|
Only if the chip supports current sensing and if
|
|
current sensing is enabled.
|
|
|
|
in[0-11]_min Low warning limit.
|
|
Supported on MAX16065, MAX16066, MAX16070, and MAX16071
|
|
only.
|
|
|
|
in[0-11]_max High warning limit.
|
|
Supported on MAX16065, MAX16066, MAX16070, and MAX16071
|
|
only.
|
|
|
|
Either low or high warning limits are supported
|
|
(depending on chip configuration), but not both.
|
|
|
|
in[0-11]_lcrit Low critical limit.
|
|
|
|
in[0-11]_crit High critical limit.
|
|
|
|
in[0-11]_alarm Input voltage alarm.
|
|
|
|
curr1_input Current sense input; only if the chip supports current
|
|
sensing and if current sensing is enabled.
|
|
Displayed current assumes 0.001 Ohm current sense
|
|
resistor.
|
|
|
|
curr1_alarm Overcurrent alarm; only if the chip supports current
|
|
sensing and if current sensing is enabled.
|
|
======================= ========================================================
|