1 .. SPDX-License-Identifier: GPL-2.0-or-later
8 * Analog Devices LTC4286
14 Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ltc4286.pdf
16 * Analog Devices LTC4287
22 Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ltc4287.pdf
24 Author: Delphine CC Chiu <Delphine_CC_Chiu@Wiwynn.com>
30 This driver supports hardware monitoring for Analog Devices LTC4286
31 and LTC4287 Hot-Swap Controller and Digital Power Monitors.
33 LTC4286 and LTC4287 are hot-swap controllers that allow a circuit board
34 to be removed from or inserted into a live backplane. They also feature
35 current and voltage readback via an integrated 12 bit analog-to-digital
36 converter (ADC), accessed using a PMBus interface.
38 The driver is a client driver to the core PMBus driver. Please see
39 Documentation/hwmon/pmbus.rst for details on PMBus client drivers.
45 This driver does not auto-detect devices. You will have to instantiate the
46 devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for
49 The shunt value in micro-ohms can be set via device tree at compile-time. Please
50 refer to the Documentation/devicetree/bindings/hwmon/lltc,ltc4286.yaml for bindings
51 if the device tree is used.
57 The driver supports standard PMBus driver platform data. Please see
58 Documentation/hwmon/pmbus.rst for details.
64 The following attributes are supported. Limits are read-write, history reset
65 attributes are write-only, all other attributes are read-only.
67 ======================= =======================================================
69 in1_input Measured voltage.
70 in1_alarm Input voltage alarm.
71 in1_min Minimum input voltage.
72 in1_max Maximum input voltage.
75 in2_input Measured voltage.
76 in2_alarm Output voltage alarm.
77 in2_min Minimum output voltage.
78 in2_max Maximum output voltage.
81 curr1_input Measured current.
82 curr1_alarm Output current alarm.
83 curr1_max Maximum current.
86 power1_input Input power.
87 power1_alarm Input power alarm.
88 power1_max Maximum poewr.
90 temp1_input Chip temperature.
91 temp1_min Minimum chip temperature.
92 temp1_max Maximum chip temperature.
93 temp1_crit Critical chip temperature.
94 temp1_alarm Chip temperature alarm.
95 ======================= =======================================================