|Kernel driver lm95234
| * National Semiconductor / Texas Instruments LM95234
| Addresses scanned: I2C 0x18, 0x4d, 0x4e
| Datasheet: Publicly available at the Texas Instruments website
|Author: Guenter Roeck <email@example.com>
|LM95234 is an 11-bit digital temperature sensor with a 2-wire System Management
|Bus (SMBus) interface and TrueTherm technology that can very accurately monitor
|the temperature of four remote diodes as well as its own temperature.
|The four remote diodes can be external devices such as microprocessors,
|graphics processors or diode-connected 2N3904s. The LM95234's TruTherm
|beta compensation technology allows sensing of 90 nm or 65 nm process
|thermal diodes accurately.
|All temperature values are given in millidegrees Celsius. Temperature
|is provided within a range of -127 to +255 degrees (+127.875 degrees for
|the internal sensor). Resolution depends on temperature input and range.
|Each sensor has its own maximum limit, but the hysteresis is common to all
|channels. The hysteresis is configurable with the tem1_max_hyst attribute and
|affects the hysteresis on all channels. The first two external sensors also
|have a critical limit.
|The lm95234 driver can change its update interval to a fixed set of values.
|It will round up to the next selectable interval. See the datasheet for exact
|values. Reading sensor values more often will do no harm, but will return