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| author | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-04-17 12:46:29 +0300 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2019-04-17 20:37:23 +0300 |
| commit | 7ebd8b66dd9e5a0b65e5ee5e2b8e7ca382ec97b7 (patch) | |
| tree | 9db30159bd32bec125c7d49e80a79bb7c4da0c8e /Documentation/hwmon/lm77 | |
| parent | b04f2f7d387b3160883c2a1f5e2285483a791e82 (diff) | |
| download | linux-7ebd8b66dd9e5a0b65e5ee5e2b8e7ca382ec97b7.tar.xz | |
docs: hwmon: Add an index file and rename docs to *.rst
Now that all files were converted to ReST format, rename them
and add an index.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon/lm77')
| -rw-r--r-- | Documentation/hwmon/lm77 | 45 |
1 files changed, 0 insertions, 45 deletions
diff --git a/Documentation/hwmon/lm77 b/Documentation/hwmon/lm77 deleted file mode 100644 index 4ed3fe6b999a..000000000000 --- a/Documentation/hwmon/lm77 +++ /dev/null @@ -1,45 +0,0 @@ -Kernel driver lm77 -================== - -Supported chips: - - * National Semiconductor LM77 - - Prefix: 'lm77' - - Addresses scanned: I2C 0x48 - 0x4b - - Datasheet: Publicly available at the National Semiconductor website - - http://www.national.com/ - - -Author: Andras BALI <drewie@freemail.hu> - -Description ------------ - -The LM77 implements one temperature sensor. The temperature -sensor incorporates a band-gap type temperature sensor, -10-bit ADC, and a digital comparator with user-programmable upper -and lower limit values. - -The LM77 implements 3 limits: low (temp1_min), high (temp1_max) and -critical (temp1_crit.) It also implements an hysteresis mechanism which -applies to all 3 limits. The relative difference is stored in a single -register on the chip, which means that the relative difference between -the limit and its hysteresis is always the same for all 3 limits. - -This implementation detail implies the following: - -* When setting a limit, its hysteresis will automatically follow, the - difference staying unchanged. For example, if the old critical limit - was 80 degrees C, and the hysteresis was 75 degrees C, and you change - the critical limit to 90 degrees C, then the hysteresis will - automatically change to 85 degrees C. -* All 3 hysteresis can't be set independently. We decided to make - temp1_crit_hyst writable, while temp1_min_hyst and temp1_max_hyst are - read-only. Setting temp1_crit_hyst writes the difference between - temp1_crit_hyst and temp1_crit into the chip, and the same relative - hysteresis applies automatically to the low and high limits. -* The limits should be set before the hysteresis. |