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