1 .. SPDX-License-Identifier: GPL-2.0
2
3 Kernel driver tmp513
4 ====================
5
6 Supported chips:
7
8 * Texas Instruments TMP512
9
10 Prefix: 'tmp512'
11
12 Datasheet: https://www.ti.com/lit/ds/symli
13
14 * Texas Instruments TMP513
15
16 Prefix: 'tmp513'
17
18 Datasheet: https://www.ti.com/lit/ds/symli
19
20 Authors:
21
22 Eric Tremblay <etremblay@distech-contro
23
24 Description
25 -----------
26
27 This driver implements support for Texas Instr
28 The TMP512 (dual-channel) and TMP513 (triple-c
29 that include remote sensors, a local temperatu
30 shunt monitor. These system monitors have the
31 temperatures, on-chip temperatures, and system
32 consumption.
33
34 The temperatures are measured in degrees Celsi
35 -40 to + 125 degrees with a resolution of 0.06
36
37 For hysteresis value, only the first channel i
38 will affect all other values since each channe
39 hysteresis value. The hysteresis is in degrees
40 0 to 127.5 degrees with a resolution of 0.5 de
41
42 The driver exports the temperature values via
43
44 **temp[1-4]_input**
45
46 **temp[1-4]_crit**
47
48 **temp[1-4]_crit_alarm**
49
50 **temp[1-4]_crit_hyst**
51
52 The driver read the shunt voltage from the chi
53 The readable range depends on the "ti,pga-gain
54 shunt resistor value. The value resolution wil
55
56 The driver exports the shunt currents values v
57
58 **curr1_input**
59
60 **curr1_lcrit**
61
62 **curr1_lcrit_alarm**
63
64 **curr1_crit**
65
66 **curr1_crit_alarm**
67
68 The bus voltage range is read from the chip wi
69 can be configurable in two different range (32
70 ti,bus-range-microvolt property in the devicet
71
72 The driver exports the bus voltage values via
73
74 **in0_input**
75
76 **in0_lcrit**
77
78 **in0_lcrit_alarm**
79
80 **in0_crit**
81
82 **in0_crit_alarm**
83
84 The bus power and bus currents range and resol
85 register value. Those values are calculate by
86 formulas:
87
88 Current = (ShuntVoltage * CalibrationRegister)
89 Power = (Current * BusVoltage) / 5000
90
91 The driver exports the bus current and bus pow
92 sysFs files:
93
94 **curr2_input**
95
96 **power1_input**
97
98 **power1_crit**
99
100 **power1_crit_alarm**
101
102 The calibration process follow the procedure o
103 and depend on the shunt resistor value and the
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