[lm-sensors] [PATCH] hwmon: (coretemp) Improve support of recent Atom CPU models

Jean Delvare khali at linux-fr.org
Wed May 30 13:29:56 CEST 2012


Document the new Atom series (Tunnel Creek and Medfield) as being
supported, and list TjMax for the Atom E600 series.

Also enable the Atom tjmax heuristic for these Atom CPU models.

Signed-off-by: Jean Delvare <khali at linux-fr.org>
Cc: Alexander Stein <alexander.stein at systec-electronic.com>
Cc: Fenghua Yu <fenghua.yu at intel.com>
Cc: Guenter Roeck <guenter.roeck at ericsson.com>
Cc: "R, Durgadoss" <durgadoss.r at intel.com>
---
This patch has been sitting in my tree for months now for no good
reason, it's about time to push it upstream. Testers are welcome.

 Documentation/hwmon/coretemp |    5 ++++-
 drivers/hwmon/coretemp.c     |    3 ++-
 2 files changed, 6 insertions(+), 2 deletions(-)

--- linux-3.1-rc4.orig/Documentation/hwmon/coretemp	2011-09-28 12:45:58.000000000 +0200
+++ linux-3.1-rc4/Documentation/hwmon/coretemp	2011-09-28 16:18:18.000000000 +0200
@@ -6,7 +6,8 @@ Supported chips:
     Prefix: 'coretemp'
     CPUID: family 0x6, models 0xe (Pentium M DC), 0xf (Core 2 DC 65nm),
                               0x16 (Core 2 SC 65nm), 0x17 (Penryn 45nm),
-                              0x1a (Nehalem), 0x1c (Atom), 0x1e (Lynnfield)
+                              0x1a (Nehalem), 0x1c (Atom), 0x1e (Lynnfield),
+                              0x26 (Tunnel Creek Atom), 0x27 (Medfield Atom)
     Datasheet: Intel 64 and IA-32 Architectures Software Developer's Manual
                Volume 3A: System Programming Guide
                http://softwarecommunity.intel.com/Wiki/Mobility/720.htm
@@ -85,6 +86,8 @@ Process		Processor					TjMax(C)
 		N475/470/455/450				100
 		N280/270					90
 		330/230						125
+		E680/660/640/620				90
+		E680T/660T/640T/620T				110
 
 45nm		Core2 Processors
 		Solo ULV SU3500/3300				100
--- linux-3.1-rc4.orig/drivers/hwmon/coretemp.c	2011-09-28 14:22:44.000000000 +0200
+++ linux-3.1-rc4/drivers/hwmon/coretemp.c	2011-09-28 16:23:29.000000000 +0200
@@ -210,7 +210,8 @@ static int adjust_tjmax(struct cpuinfo_x
 
 	/* Atom CPUs */
 
-	if (c->x86_model == 0x1c) {
+	if (c->x86_model == 0x1c || c->x86_model == 0x26
+	    || c->x86_model == 0x27) {
 		usemsr_ee = 0;
 
 		host_bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));


-- 
Jean Delvare




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