1 Kernel driver tmp108 1 Kernel driver tmp108
2 ==================== 2 ====================
3 3
4 Supported chips: 4 Supported chips:
5 5
6 * Texas Instruments TMP108 6 * Texas Instruments TMP108
7 7
8 Prefix: 'tmp108' 8 Prefix: 'tmp108'
9 9
10 Addresses scanned: none 10 Addresses scanned: none
11 11
12 Datasheet: https://www.ti.com/product/tmp1 12 Datasheet: https://www.ti.com/product/tmp108
13 13
14 Author: 14 Author:
15 15
16 John Muir <john@jmuir.com> 16 John Muir <john@jmuir.com>
17 17
18 Description 18 Description
19 ----------- 19 -----------
20 20
21 The Texas Instruments TMP108 implements one te 21 The Texas Instruments TMP108 implements one temperature sensor. An alert pin
22 can be set when temperatures exceed minimum or 22 can be set when temperatures exceed minimum or maximum values plus or minus a
23 hysteresis value. (This driver does not suppor 23 hysteresis value. (This driver does not support interrupts for the alert pin,
24 and the device runs in comparator mode.) 24 and the device runs in comparator mode.)
25 25
26 The sensor is accurate to 0.75C over the range 26 The sensor is accurate to 0.75C over the range of -25 to +85 C, and to 1.0
27 degree from -40 to +125 C. Resolution of the s 27 degree from -40 to +125 C. Resolution of the sensor is 0.0625 degree. The
28 operating temperature has a minimum of -55 C a 28 operating temperature has a minimum of -55 C and a maximum of +150 C.
29 Hysteresis values can be set to 0, 1, 2, or 4C 29 Hysteresis values can be set to 0, 1, 2, or 4C.
30 30
31 The TMP108 has a programmable update rate that 31 The TMP108 has a programmable update rate that can select between 8, 4, 1, and
32 0.5 Hz. 32 0.5 Hz.
33 33
34 By default the TMP108 reads the temperature co 34 By default the TMP108 reads the temperature continuously. To conserve power,
35 the TMP108 has a one-shot mode where the devic 35 the TMP108 has a one-shot mode where the device is normally shut-down. When a
36 one shot is requested the temperature is read, 36 one shot is requested the temperature is read, the result can be retrieved,
37 and then the device is shut down automatically 37 and then the device is shut down automatically. (This driver only supports
38 continuous mode.) 38 continuous mode.)
39 39
40 The driver provides the common sysfs-interface 40 The driver provides the common sysfs-interface for temperatures (see
41 Documentation/hwmon/sysfs-interface.rst under 41 Documentation/hwmon/sysfs-interface.rst under Temperatures).
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