diff options
| author |   Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
|---|---|---|
| committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
| commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
| tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/Documentation/hwmon/lm95234 | |
| parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) | |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/Documentation/hwmon/lm95234')
| -rw-r--r-- | kernel/Documentation/hwmon/lm95234 | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/kernel/Documentation/hwmon/lm95234 b/kernel/Documentation/hwmon/lm95234 new file mode 100644 index 000000000..32b777ef2 --- /dev/null +++ b/kernel/Documentation/hwmon/lm95234 @@ -0,0 +1,41 @@ +Kernel driver lm95234 +===================== + +Supported chips: + * National Semiconductor / Texas Instruments LM95233 + Addresses scanned: I2C 0x18, 0x2a, 0x2b + Datasheet: Publicly available at the Texas Instruments website + http://www.ti.com/product/lm95233 + * National Semiconductor / Texas Instruments LM95234 + Addresses scanned: I2C 0x18, 0x4d, 0x4e + Datasheet: Publicly available at the Texas Instruments website + http://www.ti.com/product/lm95234 + + +Author: Guenter Roeck <linux@roeck-us.net> + +Description +----------- + +LM95233 and LM95234 are 11-bit digital temperature sensors with a 2-wire +System Management Bus (SMBus) interface and TrueTherm technology +that can very accurately monitor the temperature of two (LM95233) +or four (LM95234) remote diodes as well as its own temperature. +The remote diodes can be external devices such as microprocessors, +graphics processors or diode-connected 2N3904s. The chip'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 +'old' values. |