0001 Kernel driver max16065
0002 ======================
0003
0004
0005 Supported chips:
0006
0007 * Maxim MAX16065, MAX16066
0008
0009 Prefixes: 'max16065', 'max16066'
0010
0011 Addresses scanned: -
0012
0013 Datasheet:
0014
0015 http://datasheets.maxim-ic.com/en/ds/MAX16065-MAX16066.pdf
0016
0017 * Maxim MAX16067
0018
0019 Prefix: 'max16067'
0020
0021 Addresses scanned: -
0022
0023 Datasheet:
0024
0025 http://datasheets.maxim-ic.com/en/ds/MAX16067.pdf
0026
0027 * Maxim MAX16068
0028
0029 Prefix: 'max16068'
0030
0031 Addresses scanned: -
0032
0033 Datasheet:
0034
0035 http://datasheets.maxim-ic.com/en/ds/MAX16068.pdf
0036
0037 * Maxim MAX16070/MAX16071
0038
0039 Prefixes: 'max16070', 'max16071'
0040
0041 Addresses scanned: -
0042
0043 Datasheet:
0044
0045 http://datasheets.maxim-ic.com/en/ds/MAX16070-MAX16071.pdf
0046
0047 Author: Guenter Roeck <linux@roeck-us.net>
0048
0049
0050 Description
0051 -----------
0052
0053 [From datasheets] The MAX16065/MAX16066 flash-configurable system managers
0054 monitor and sequence multiple system voltages. The MAX16065/MAX16066 can also
0055 accurately monitor (+/-2.5%) one current channel using a dedicated high-side
0056 current-sense amplifier. The MAX16065 manages up to twelve system voltages
0057 simultaneously, and the MAX16066 manages up to eight supply voltages.
0058
0059 The MAX16067 flash-configurable system manager monitors and sequences multiple
0060 system voltages. The MAX16067 manages up to six system voltages simultaneously.
0061
0062 The MAX16068 flash-configurable system manager monitors and manages up to six
0063 system voltages simultaneously.
0064
0065 The MAX16070/MAX16071 flash-configurable system monitors supervise multiple
0066 system voltages. The MAX16070/MAX16071 can also accurately monitor (+/-2.5%)
0067 one current channel using a dedicated high-side current-sense amplifier. The
0068 MAX16070 monitors up to twelve system voltages simultaneously, and the MAX16071
0069 monitors up to eight supply voltages.
0070
0071 Each monitored channel has its own low and high critical limits. MAX16065,
0072 MAX16066, MAX16070, and MAX16071 support an additional limit which is
0073 configurable as either low or high secondary limit. MAX16065, MAX16066,
0074 MAX16070, and MAX16071 also support supply current monitoring.
0075
0076
0077 Usage Notes
0078 -----------
0079
0080 This driver does not probe for devices, since there is no register which
0081 can be safely used to identify the chip. You will have to instantiate
0082 the devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for
0083 details.
0084
0085 WARNING: Do not access chip registers using the i2cdump command, and do not use
0086 any of the i2ctools commands on a command register (0xa5 to 0xac). The chips
0087 supported by this driver interpret any access to a command register (including
0088 read commands) as request to execute the command in question. This may result in
0089 power loss, board resets, and/or Flash corruption. Worst case, your board may
0090 turn into a brick.
0091
0092
0093 Sysfs entries
0094 -------------
0095
0096 ======================= ========================================================
0097 in[0-11]_input Input voltage measurements.
0098
0099 in12_input Voltage on CSP (Current Sense Positive) pin.
0100 Only if the chip supports current sensing and if
0101 current sensing is enabled.
0102
0103 in[0-11]_min Low warning limit.
0104 Supported on MAX16065, MAX16066, MAX16070, and MAX16071
0105 only.
0106
0107 in[0-11]_max High warning limit.
0108 Supported on MAX16065, MAX16066, MAX16070, and MAX16071
0109 only.
0110
0111 Either low or high warning limits are supported
0112 (depending on chip configuration), but not both.
0113
0114 in[0-11]_lcrit Low critical limit.
0115
0116 in[0-11]_crit High critical limit.
0117
0118 in[0-11]_alarm Input voltage alarm.
0119
0120 curr1_input Current sense input; only if the chip supports current
0121 sensing and if current sensing is enabled.
0122 Displayed current assumes 0.001 Ohm current sense
0123 resistor.
0124
0125 curr1_alarm Overcurrent alarm; only if the chip supports current
0126 sensing and if current sensing is enabled.
0127 ======================= ========================================================
