hwmon: (coretemp) Add support for Atom D2000 and N2000 series CPU models

commit 5592906f8b01282ea3c2acaf641fd067ad4bb3dc upstream.

Document the Atom series D2000 and N2000 (Cedar Trail) as being supported.
List and set TjMax for those series.

Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: "R, Durgadoss" <durgadoss.r@intel.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Qiang Huang <h.huangqiang@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/hwmon/coretemp b/Documentation/hwmon/coretemp
index f6aed44..71d83d2 100644 (file)
--- a/Documentation/hwmon/coretemp
+++ b/Documentation/hwmon/coretemp
@@ -7,7 +7,8 @@ Supported chips:
     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),
-                              0x26 (Tunnel Creek Atom), 0x27 (Medfield Atom)
+                              0x26 (Tunnel Creek Atom), 0x27 (Medfield Atom),
+                              0x36 (Cedar Trail 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
@@ -68,6 +69,8 @@ Process               Processor                                       TjMax(C)
 
 32nm           Atom Processors
                Z2460                                           90
+               D2700/2550/2500                                 100
+               N2850/2800/2650/2600                            100
 
 45nm           Xeon Processors 5400 Quad-Core
                X5492, X5482, X5472, X5470, X5460, X5450        85

diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c
index 4c4fd81..48c249c 100644 (file)
--- a/drivers/hwmon/coretemp.c
+++ b/drivers/hwmon/coretemp.c
@@ -224,6 +224,9 @@ static int __cpuinit adjust_tjmax(struct cpuinfo_x86 *c, u32 id,
                        tjmax = 90000;
 
                pci_dev_put(host_bridge);
+       } else if (c->x86_model == 0x36) {
+               usemsr_ee = 0;
+               tjmax = 100000;
        }
 
        if (c->x86_model > 0xe && usemsr_ee) {