mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 21:24:00 +08:00
32 lines
973 B
Plaintext
32 lines
973 B
Plaintext
|
Kernel driver lm70
|
||
|
|
==================
|
||
|
|
|
||
|
|
Supported chip:
|
||
|
|
* National Semiconductor LM70
|
||
|
|
Datasheet: http://www.national.com/pf/LM/LM70.html
|
||
|
|
|
||
|
|
Author:
|
||
|
|
Kaiwan N Billimoria <kaiwan@designergraphix.com>
|
||
|
|
|
||
|
|
Description
|
||
|
|
-----------
|
||
|
|
|
||
|
|
This driver implements support for the National Semiconductor LM70
|
||
|
|
temperature sensor.
|
||
|
|
|
||
|
|
The LM70 temperature sensor chip supports a single temperature sensor.
|
||
|
|
It communicates with a host processor (or microcontroller) via an
|
||
|
|
SPI/Microwire Bus interface.
|
||
|
|
|
||
|
|
Communication with the LM70 is simple: when the temperature is to be sensed,
|
||
|
|
the driver accesses the LM70 using SPI communication: 16 SCLK cycles
|
||
|
|
comprise the MOSI/MISO loop. At the end of the transfer, the 11-bit 2's
|
||
|
|
complement digital temperature (sent via the SIO line), is available in the
|
||
|
|
driver for interpretation. This driver makes use of the kernel's in-core
|
||
|
|
SPI support.
|
||
|
|
|
||
|
|
Thanks to
|
||
|
|
---------
|
||
|
|
Jean Delvare <khali@linux-fr.org> for mentoring the hwmon-side driver
|
||
|
|
development.
|