diff options
| author | Len Brown <len.brown@intel.com> | 2012-10-09 01:35:52 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2012-10-09 01:35:52 -0400 |
| commit | 29b19e250434c6193c8b8e4c34c9c6284dd4f101 (patch) | |
| tree | 8a1c8e308c9ae964f7fb612e921e10cf4c30ba15 /Documentation/hwmon | |
| parent | 125c4c706b680c7831f0966ff873c1ad0354ec25 (diff) | |
| parent | c072fed95c9855a920c114d7fa3351f0f54ea06e (diff) | |
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux into thermal
Conflicts:
drivers/staging/omap-thermal/omap-thermal-common.
OMAP supplied dummy TC1 and TC2,
at the same time that the thermal tree removed them
from thermal_zone_device_register()
drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
propogate the upstream MAX_IDR_LEVEL re-name
to prevent a build failure
Previously-fixed-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'Documentation/hwmon')
| -rw-r--r-- | Documentation/hwmon/exynos4_tmu | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/Documentation/hwmon/exynos4_tmu b/Documentation/hwmon/exynos4_tmu deleted file mode 100644 index c3c6b41db607..000000000000 --- a/Documentation/hwmon/exynos4_tmu +++ /dev/null @@ -1,81 +0,0 @@ -Kernel driver exynos4_tmu -================= - -Supported chips: -* ARM SAMSUNG EXYNOS4 series of SoC - Prefix: 'exynos4-tmu' - Datasheet: Not publicly available - -Authors: Donggeun Kim <dg77.kim@samsung.com> - -Description ------------ - -This driver allows to read temperature inside SAMSUNG EXYNOS4 series of SoC. - -The chip only exposes the measured 8-bit temperature code value -through a register. -Temperature can be taken from the temperature code. -There are three equations converting from temperature to temperature code. - -The three equations are: - 1. Two point trimming - Tc = (T - 25) * (TI2 - TI1) / (85 - 25) + TI1 - - 2. One point trimming - Tc = T + TI1 - 25 - - 3. No trimming - Tc = T + 50 - - Tc: Temperature code, T: Temperature, - TI1: Trimming info for 25 degree Celsius (stored at TRIMINFO register) - Temperature code measured at 25 degree Celsius which is unchanged - TI2: Trimming info for 85 degree Celsius (stored at TRIMINFO register) - Temperature code measured at 85 degree Celsius which is unchanged - -TMU(Thermal Management Unit) in EXYNOS4 generates interrupt -when temperature exceeds pre-defined levels. -The maximum number of configurable threshold is four. -The threshold levels are defined as follows: - Level_0: current temperature > trigger_level_0 + threshold - Level_1: current temperature > trigger_level_1 + threshold - Level_2: current temperature > trigger_level_2 + threshold - Level_3: current temperature > trigger_level_3 + threshold - - The threshold and each trigger_level are set - through the corresponding registers. - -When an interrupt occurs, this driver notify user space of -one of four threshold levels for the interrupt -through kobject_uevent_env and sysfs_notify functions. -Although an interrupt condition for level_0 can be set, -it is not notified to user space through sysfs_notify function. - -Sysfs Interface ---------------- -name name of the temperature sensor - RO - -temp1_input temperature - RO - -temp1_max temperature for level_1 interrupt - RO - -temp1_crit temperature for level_2 interrupt - RO - -temp1_emergency temperature for level_3 interrupt - RO - -temp1_max_alarm alarm for level_1 interrupt - RO - -temp1_crit_alarm - alarm for level_2 interrupt - RO - -temp1_emergency_alarm - alarm for level_3 interrupt - RO |