module: Convert symbol namespace to string literal
[linux.git] / Documentation / hwmon / ltc4286.rst
blob2cd149676d86363cdbd2a16aa9a134fa79c16141
1 .. SPDX-License-Identifier: GPL-2.0-or-later
3 Kernel driver ltc4286
4 =====================
6 Supported chips:
8   * Analog Devices LTC4286
10     Prefix: 'ltc4286'
12     Addresses scanned: -
14     Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ltc4286.pdf
16   * Analog Devices LTC4287
18     Prefix: 'ltc4287'
20     Addresses scanned: -
22     Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ltc4287.pdf
24 Author: Delphine CC Chiu <Delphine_CC_Chiu@Wiwynn.com>
27 Description
28 -----------
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.
42 Usage Notes
43 -----------
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
47 details.
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.
54 Platform data support
55 ---------------------
57 The driver supports standard PMBus driver platform data. Please see
58 Documentation/hwmon/pmbus.rst for details.
61 Sysfs entries
62 -------------
64 The following attributes are supported. Limits are read-write, history reset
65 attributes are write-only, all other attributes are read-only.
67 ======================= =======================================================
68 in1_label               "vin"
69 in1_input               Measured voltage.
70 in1_alarm               Input voltage alarm.
71 in1_min                 Minimum input voltage.
72 in1_max                 Maximum input voltage.
74 in2_label               "vout1"
75 in2_input               Measured voltage.
76 in2_alarm               Output voltage alarm.
77 in2_min                 Minimum output voltage.
78 in2_max                 Maximum output voltage.
80 curr1_label             "iout1"
81 curr1_input             Measured current.
82 curr1_alarm             Output current alarm.
83 curr1_max               Maximum current.
85 power1_label            "pin"
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 ======================= =======================================================