diff options
| author | Andre Przywara <andre.przywara@amd.com> | 2012-09-04 08:28:03 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2012-09-09 22:04:34 +0200 |
| commit | acd316248205d553594296f1895ba5196b89ffcc (patch) | |
| tree | c056ba67e8666867ee5f4c9acc7d665f1c0dbd61 /drivers/cpufreq/powernow-k8.c | |
| parent | 3dc9a633f8a65b39c5897874138027328bfb0a94 (diff) | |
acpi-cpufreq: Add quirk to disable _PSD usage on all AMD CPUs
To workaround some Windows specific behavior, the ACPI _PSD table
on AMD desktop boards advertises all cores as dependent, meaning
that they all can only use the same P-state. acpi-cpufreq strictly
obeys this description, instantiating one CPU only and symlinking
the others. But the hardware can have distinct frequencies for each
core and powernow-k8 did it that way.
So, in order to use the hardware to its full potential and keep the
original powernow-k8 behavior, lets override the _PSD table setting
on AMD hardware.
We use the siblings table, as it matches the current hardware
behavior.
Signed-off-by: Andre Przywara <andre.przywara@amd.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'drivers/cpufreq/powernow-k8.c')
0 files changed, 0 insertions, 0 deletions