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| author | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-04-17 12:46:29 +0300 |
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| committer | Guenter Roeck <linux@roeck-us.net> | 2019-04-17 20:37:23 +0300 |
| commit | 7ebd8b66dd9e5a0b65e5ee5e2b8e7ca382ec97b7 (patch) | |
| tree | 9db30159bd32bec125c7d49e80a79bb7c4da0c8e /Documentation/hwmon/ntc_thermistor | |
| 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/ntc_thermistor')
| -rw-r--r-- | Documentation/hwmon/ntc_thermistor | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/Documentation/hwmon/ntc_thermistor b/Documentation/hwmon/ntc_thermistor deleted file mode 100644 index d0e7f91726b9..000000000000 --- a/Documentation/hwmon/ntc_thermistor +++ /dev/null @@ -1,111 +0,0 @@ -Kernel driver ntc_thermistor -============================ - -Supported thermistors from Murata: - -* Murata NTC Thermistors NCP15WB473, NCP18WB473, NCP21WB473, NCP03WB473, - NCP15WL333, NCP03WF104, NCP15XH103 - - Prefixes: 'ncp15wb473', 'ncp18wb473', 'ncp21wb473', 'ncp03wb473', - 'ncp15wl333', 'ncp03wf104', 'ncp15xh103' - - Datasheet: Publicly available at Murata - -Supported thermistors from EPCOS: - -* EPCOS NTC Thermistors B57330V2103 - - Prefixes: b57330v2103 - - Datasheet: Publicly available at EPCOS - -Other NTC thermistors can be supported simply by adding compensation -tables; e.g., NCP15WL333 support is added by the table ncpXXwl333. - -Authors: - - MyungJoo Ham <myungjoo.ham@samsung.com> - -Description ------------ - -The NTC (Negative Temperature Coefficient) thermistor is a simple thermistor -that requires users to provide the resistance and lookup the corresponding -compensation table to get the temperature input. - -The NTC driver provides lookup tables with a linear approximation function -and four circuit models with an option not to use any of the four models. - -Using the following convention:: - - $ resistor - [TH] the thermistor - -The four circuit models provided are: - -1. connect = NTC_CONNECTED_POSITIVE, pullup_ohm > 0:: - - [pullup_uV] - | | - [TH] $ (pullup_ohm) - | | - +----+-----------------------[read_uV] - | - $ (pulldown_ohm) - | - -+- (ground) - -2. connect = NTC_CONNECTED_POSITIVE, pullup_ohm = 0 (not-connected):: - - [pullup_uV] - | - [TH] - | - +----------------------------[read_uV] - | - $ (pulldown_ohm) - | - -+- (ground) - -3. connect = NTC_CONNECTED_GROUND, pulldown_ohm > 0:: - - [pullup_uV] - | - $ (pullup_ohm) - | - +----+-----------------------[read_uV] - | | - [TH] $ (pulldown_ohm) - | | - -+----+- (ground) - -4. connect = NTC_CONNECTED_GROUND, pulldown_ohm = 0 (not-connected):: - - [pullup_uV] - | - $ (pullup_ohm) - | - +----------------------------[read_uV] - | - [TH] - | - -+- (ground) - -When one of the four circuit models is used, read_uV, pullup_uV, pullup_ohm, -pulldown_ohm, and connect should be provided. When none of the four models -are suitable or the user can get the resistance directly, the user should -provide read_ohm and _not_ provide the others. - -Sysfs Interface ---------------- - -=============== == ============================================================= -name the mandatory global attribute, the thermistor name. -=============== == ============================================================= -temp1_type RO always 4 (thermistor) - -temp1_input RO measure the temperature and provide the measured value. - (reading this file initiates the reading procedure.) -=============== == ============================================================= - -Note that each NTC thermistor has only _one_ thermistor; thus, only temp1 exists. |