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Commit f3cffe4d authored by Chen Gong's avatar Chen Gong Committed by Linus Torvalds
Browse files

hwmon: coretemp: documentation update and cleanup 



Update coretemp supported CPU TjMax lists and some cleanup work.

Signed-off-by: default avatarChen Gong <gong.chen@linux.intel.com>
Cc: Rudolf Marek <r.marek@assembler.cz>
Cc: Huaxu Wan <huaxu.wan@intel.com>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Guenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 851b29cb

Documentation/hwmon/coretemp

+103 −2
Original line number Diff line number Diff line
@@ -21,8 +21,8 @@ Temperature is measured in degrees Celsius and measurement resolution is 
1 degree C. Valid temperatures are from 0 to TjMax degrees C, because

the actual value of temperature register is in fact a delta from TjMax.



Temperature known as TjMax is the maximum junction temperature of processor.

Intel defines this temperature as 85C or 100C. At this temperature, protection

Temperature known as TjMax is the maximum junction temperature of processor,

which depends on the CPU model. See table below. At this temperature, protection

mechanism will perform actions to forcibly cool down the processor. Alarm

may be raised, if the temperature grows enough (more than TjMax) to trigger

the Out-Of-Spec bit. Following table summarizes the exported sysfs files:
@@ -38,3 +38,104 @@ temp1_label - Contains string "Core X", where X is processor 
The TjMax temperature is set to 85 degrees C if undocumented model specific

register (UMSR) 0xee has bit 30 set. If not the TjMax is 100 degrees C as

(sometimes) documented in processor datasheet.



Appendix A. Known TjMax lists (TBD):

Some information comes from ark.intel.com



Process		Processor					TjMax(C)



32nm		Core i3/i5/i7 Processors

		i7 660UM/640/620, 640LM/620, 620M, 610E		105

		i5 540UM/520/430, 540M/520/450/430		105

		i3 330E, 370M/350/330				90 rPGA, 105 BGA

		i3 330UM					105



32nm		Core i7 Extreme Processors

		980X						100



32nm		Celeron Processors

		U3400						105

		P4505/P4500 					90



45nm		Xeon Processors 5400 Quad-Core

		X5492, X5482, X5472, X5470, X5460, X5450	85

		E5472, E5462, E5450/40/30/20/10/05		85

		L5408						95

		L5430, L5420, L5410				70



45nm		Xeon Processors 5200 Dual-Core

		X5282, X5272, X5270, X5260			90

		E5240						90

		E5205, E5220					70, 90

		L5240						70

		L5238, L5215					95



45nm		Atom Processors

		D525/510/425/410				100

		Z560/550/540/530P/530/520PT/520/515/510PT/510P	90

		Z510/500					90

		N475/470/455/450				100

		N280/270					90

		330/230						125



45nm		Core2 Processors

		Solo ULV SU3500/3300				100

		T9900/9800/9600/9550/9500/9400/9300/8300/8100	105

		T6670/6500/6400					105

		T6600						90

		SU9600/9400/9300				105

		SP9600/9400					105

		SL9600/9400/9380/9300				105

		P9700/9600/9500/8800/8700/8600/8400/7570	105

		P7550/7450					90



45nm		Core2 Quad Processors

		Q9100/9000					100



45nm		Core2 Extreme Processors

		X9100/9000					105

		QX9300						100



45nm		Core i3/i5/i7 Processors

		i7 940XM/920					100

		i7 840QM/820/740/720				100



45nm		Celeron Processors

		SU2300						100

		900 						105



65nm		Core2 Duo Processors

		Solo U2200, U2100				100

		U7700/7600/7500					100

		T7800/7700/7600/7500/7400/7300/7250/7200/7100	100

		T5870/5670/5600/5550/5500/5470/5450/5300/5270	100

		T5250						100

		T5800/5750/5200					85

		L7700/7500/7400/7300/7200			100



65nm		Core2 Extreme Processors

		X7900/7800					100



65nm		Core Duo Processors

		U2500/2400					100

		T2700/2600/2450/2400/2350/2300E/2300/2250/2050	100

		L2500/2400/2300					100



65nm		Core Solo Processors

		U1500/1400/1300					100

		T1400/1350/1300/1250				100



65nm		Xeon Processors 5000 Quad-Core

		X5000						90-95

		E5000						80

		L5000						70

		L5318						95



65nm		Xeon Processors 5000 Dual-Core

		5080, 5063, 5060, 5050, 5030			80-90

		5160, 5150, 5148, 5140, 5130, 5120, 5110	80

		L5138						100



65nm		Celeron Processors

		T1700/1600					100

		560/550/540/530					100

drivers/hwmon/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -405,7 +405,7 @@ config SENSORS_CORETEMP 
	help

	  If you say yes here you get support for the temperature

	  sensor inside your CPU. Most of the family 6 CPUs

	  are supported. Check documentation/driver for details.

	  are supported. Check Documentation/hwmon/coretemp for details.



config SENSORS_PKGTEMP

	tristate "Intel processor package temperature sensor"