1 Kernel driver ltc2945
2 =====================
3
4 Supported chips:
5
6 * Linear Technology LTC2945
7
8 Prefix: 'ltc2945'
9
10 Addresses scanned: -
11
12 Datasheet:
13
14 https://www.analog.com/media/en/techni
15
16 Author: Guenter Roeck <linux@roeck-us.net>
17
18
19 Description
20 -----------
21
22 The LTC2945 is a rail-to-rail system monitor
23 and power consumption.
24
25
26 Usage Notes
27 -----------
28
29 This driver does not probe for LTC2945 devices
30 which can be safely used to identify the chip.
31 the devices explicitly.
32
33 Example: the following will load the driver fo
34 on I2C bus #1::
35
36 $ modprobe ltc2945
37 $ echo ltc2945 0x10 > /sys/bus/i2c/dev
38
39
40 Sysfs entries
41 -------------
42
43 Voltage readings provided by this driver are r
44 registers. If a set of voltage divider resisto
45 real voltage by multiplying the reported value
46 value of the divider resistor against the meas
47 of the divider resistor against Ground.
48
49 Current reading provided by this driver is rep
50 Current Sense register. The reported value ass
51 is installed. If a different sense resistor is
52 current by dividing the reported value by the
53
54 ======================= ======================
55 in1_input VIN voltage (mV). Volt
56 SENSE+ or VDD pin depe
57 in1_min Undervoltage threshold
58 in1_max Overvoltage threshold
59 in1_lowest Lowest measured voltag
60 in1_highest Highest measured volta
61 in1_reset_history Write 1 to reset in1 h
62 in1_min_alarm Undervoltage alarm
63 in1_max_alarm Overvoltage alarm
64
65 in2_input ADIN voltage (mV)
66 in2_min Undervoltage threshold
67 in2_max Overvoltage threshold
68 in2_lowest Lowest measured voltag
69 in2_highest Highest measured volta
70 in2_reset_history Write 1 to reset in2 h
71 in2_min_alarm Undervoltage alarm
72 in2_max_alarm Overvoltage alarm
73
74 curr1_input SENSE current (mA)
75 curr1_min Undercurrent threshold
76 curr1_max Overcurrent threshold
77 curr1_lowest Lowest measured curren
78 curr1_highest Highest measured curre
79 curr1_reset_history Write 1 to reset curr1
80 curr1_min_alarm Undercurrent alarm
81 curr1_max_alarm Overcurrent alarm
82
83 power1_input Power (in uW). Power i
84 voltage or ADIN voltag
85 power1_min Low lower threshold
86 power1_max High power threshold
87 power1_input_lowest Historical minimum pow
88 power1_input_highest Historical maximum pow
89 power1_reset_history Write 1 to reset power
90 power1_min_alarm Low power alarm
91 power1_max_alarm High power alarm
92 ======================= ======================
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