1 Kernel driver lm70
2 ==================
3
4 Supported chips:
5
6 * National Semiconductor LM70
7
8 Datasheet: https://www.ti.com/product/LM70
9
10 * Texas Instruments TMP121/TMP123
11
12 Information: http://focus.ti.com/docs/prod
13
14 * Texas Instruments TMP122/TMP124
15
16 Information: https://www.ti.com/product/tm
17
18 * Texas Instruments TMP125
19
20 Information: https://www.ti.com/product/tm
21
22 * National Semiconductor LM71
23
24 Datasheet: https://www.ti.com/product/LM71
25
26 * National Semiconductor LM74
27
28 Datasheet: https://www.ti.com/product/LM74
29
30
31 Author:
32 Kaiwan N Billimoria <kaiwan@designergra
33
34 Description
35 -----------
36
37 This driver implements support for the Nationa
38 temperature sensor.
39
40 The LM70 temperature sensor chip supports a si
41 It communicates with a host processor (or micr
42 SPI/Microwire Bus interface.
43
44 Communication with the LM70 is simple: when th
45 the driver accesses the LM70 using SPI communi
46 comprise the MOSI/MISO loop. At the end of the
47 complement digital temperature (sent via the S
48 driver for interpretation. This driver makes u
49 SPI support.
50
51 As a real (in-tree) example of this "SPI proto
52 with a "SPI master controller driver", see dri
53 and its associated documentation.
54
55 The LM74 and TMP121/TMP122/TMP123/TMP124 are v
56 13-bit temperature data (0.0625 degrees celsiu
57
58 The TMP122/TMP124 also feature configurable te
59
60 The TMP125 is less accurate and provides 10-bi
61 with 0.25 degrees Celsius resolution.
62
63 The LM71 is also very similar; main difference
64 data (0.03125 degrees celsius resolution).
65
66 Thanks to
67 ---------
68 Jean Delvare <jdelvare@suse.de> for mentoring t
69 development.
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