diff options
| author | Alex Frid <afrid@nvidia.com> | 2011-12-14 15:28:44 -0800 |
|---|---|---|
| committer | Rohan Somvanshi <rsomvanshi@nvidia.com> | 2012-01-19 10:29:49 -0800 |
| commit | 4f5892b1c1aa1ffb085333bb2412464a66910a99 (patch) | |
| tree | c89dc27e341342176a60a8531385526c133de2b1 /arch/arm/mach-tegra/cpu-tegra.c | |
| parent | 732dd0ebfa107da83c18bedc42f1d606271bb89c (diff) | |
ARM: tegra: dvfs: Add cold zone Tegra3 CPU dvfs limits
Added alternative frequency limits for Tegra3 CPU. These limits are
applied only in the lowest CPU EDP temperature zone, and the offset
from regular Tegra3 dvfs frequencies is set at -50MHz at all scaling
voltage steps. Offset values as well as temperature threshold are to
be updated per characterization.
Bug 913884
Change-Id: Ia420f54b4c9fdc966e44d0269d45d9164d751b5f
Signed-off-by: Alex Frid <afrid@nvidia.com>
Reviewed-on: http://git-master/r/70189
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com>
Tested-by: Diwakar Tundlam <dtundlam@nvidia.com>
Reviewed-by: Krishna Reddy <vdumpa@nvidia.com>
Reviewed-on: http://git-master/r/75615
Reviewed-by: Varun Wadekar <vwadekar@nvidia.com>
Tested-by: Varun Wadekar <vwadekar@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra/cpu-tegra.c')
| -rw-r--r-- | arch/arm/mach-tegra/cpu-tegra.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/arm/mach-tegra/cpu-tegra.c b/arch/arm/mach-tegra/cpu-tegra.c index 5599c298ac5b..24ed5d229a5d 100644 --- a/arch/arm/mach-tegra/cpu-tegra.c +++ b/arch/arm/mach-tegra/cpu-tegra.c @@ -41,6 +41,7 @@ #include "clock.h" #include "cpu-tegra.h" +#include "dvfs.h" /* tegra throttling and edp governors require frequencies in the table to be in ascending order */ @@ -226,11 +227,14 @@ int tegra_edp_update_thermal_zone(int temperature) mutex_lock(&tegra_cpu_lock); edp_thermal_index = index; - /* Update cpu rate if cpufreq (at least on cpu0) is already started */ + /* Update cpu rate if cpufreq (at least on cpu0) is already started; + alter cpu dvfs table for this thermal zone if necessary */ + tegra_cpu_dvfs_alter(edp_thermal_index, true); if (target_cpu_speed[0]) { edp_update_limit(); tegra_cpu_set_speed_cap(NULL); } + tegra_cpu_dvfs_alter(edp_thermal_index, false); mutex_unlock(&tegra_cpu_lock); return ret; |