Dear Kernel Maintainers,
I have observed, that on our SBC's the GPU turbo mode doesn't work. This happens only to those with embedded Arrandale (1288 FCBGA package) standard voltage (35W) CPU's. These CPU's do not have there an letter whereas the Mobile CPU has an M. So there seems to be a need to update the intel_ips.c in order to recognize the CPU's with brand strings 'Intel(R) Core(TM) i7 CPU 610 @ 2.53GHz' and 'Intel(R) Core(TM) i5 CPU 520 @ 2.40GHz'. I have prepared therefor following patch:
diff -urN linux-2.6.38-rc3/drivers/platform/x86/intel_ips.c linux/drivers/platform/x86/intel_ips.c
--- linux-2.6.38-rc3/drivers/platform/x86/intel_ips.c 2011-02-01 04:05:49.000000000 +0100
+++ linux/drivers/platform/x86/intel_ips.c 2011-02-04 15:25:40.205627688 +0100
@@ -1399,6 +1399,10 @@
limits = &ips_lv_limits;
else if (strstr(boot_cpu_data.x86_model_id, "CPU U"))
limits = &ips_ulv_limits;
+ else if (strstr(boot_cpu_data.x86_model_id, "CPU 610"))
+ limits = &ips_sv_limits;
+ else if (strstr(boot_cpu_data.x86_model_id, "CPU 520"))
+ limits = &ips_sv_limits;
else {
dev_info(&ips->dev->dev, "No CPUID match found.\n");
goto out;
With best Regards,
Philip
Philip Koerber
Technical Support
+49 821 5034 178
Memminger Straße 14
86159 Augsburg
Germany
Attachment:
embedded_arrandale_ips_patch
Description: embedded_arrandale_ips_patch
