| John Muir | 66e1c91 | 2016-12-01 18:32:41 -0800 | [diff] [blame] | 1 | Kernel driver tmp108 |
| 2 | ==================== |
| 3 | |
| 4 | Supported chips: |
| Mauro Carvalho Chehab | b04f2f7 | 2019-04-17 06:46:28 -0300 | [diff] [blame] | 5 | |
| John Muir | 66e1c91 | 2016-12-01 18:32:41 -0800 | [diff] [blame] | 6 | * Texas Instruments TMP108 |
| Mauro Carvalho Chehab | b04f2f7 | 2019-04-17 06:46:28 -0300 | [diff] [blame] | 7 | |
| John Muir | 66e1c91 | 2016-12-01 18:32:41 -0800 | [diff] [blame] | 8 | Prefix: 'tmp108' |
| Mauro Carvalho Chehab | b04f2f7 | 2019-04-17 06:46:28 -0300 | [diff] [blame] | 9 | |
| John Muir | 66e1c91 | 2016-12-01 18:32:41 -0800 | [diff] [blame] | 10 | Addresses scanned: none |
| Mauro Carvalho Chehab | b04f2f7 | 2019-04-17 06:46:28 -0300 | [diff] [blame] | 11 | |
| Alexander A. Klimov | ad736c1 | 2020-07-19 19:55:12 +0200 | [diff] [blame] | 12 | Datasheet: https://www.ti.com/product/tmp108 |
| John Muir | 66e1c91 | 2016-12-01 18:32:41 -0800 | [diff] [blame] | 13 | |
| 14 | Author: |
| Mauro Carvalho Chehab | b04f2f7 | 2019-04-17 06:46:28 -0300 | [diff] [blame] | 15 | |
| John Muir | 66e1c91 | 2016-12-01 18:32:41 -0800 | [diff] [blame] | 16 | John Muir <john@jmuir.com> |
| 17 | |
| 18 | Description |
| 19 | ----------- |
| 20 | |
| 21 | The Texas Instruments TMP108 implements one temperature sensor. An alert pin |
| 22 | can be set when temperatures exceed minimum or maximum values plus or minus a |
| 23 | hysteresis value. (This driver does not support interrupts for the alert pin, |
| 24 | and the device runs in comparator mode.) |
| 25 | |
| 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 sensor is 0.0625 degree. The |
| 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. |
| 30 | |
| 31 | The TMP108 has a programmable update rate that can select between 8, 4, 1, and |
| 32 | 0.5 Hz. |
| 33 | |
| 34 | By default the TMP108 reads the temperature continuously. To conserve power, |
| 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, the result can be retrieved, |
| 37 | and then the device is shut down automatically. (This driver only supports |
| 38 | continuous mode.) |
| 39 | |
| 40 | The driver provides the common sysfs-interface for temperatures (see |
| Mauro Carvalho Chehab | 7ebd8b66 | 2019-04-17 06:46:29 -0300 | [diff] [blame] | 41 | Documentation/hwmon/sysfs-interface.rst under Temperatures). |