diff options
| author | Wen Yi <wyi@nvidia.com> | 2012-08-21 17:04:48 -0700 |
|---|---|---|
| committer | Mrutyunjay Sawant <msawant@nvidia.com> | 2012-09-17 06:33:20 -0700 |
| commit | 4c12e7369dcd7789ff2477279e28a792dca2eac7 (patch) | |
| tree | 76ee4363f677feee46de6a68af62a477f38df884 /arch/arm/mach-tegra/board-cardhu-power.c | |
| parent | 441a643006ba7368494a13a44223ef85cc041c78 (diff) | |
arm: tegra: raise cpu floor when display is on
When device is idle and display is on, the minimal
cpu frequency can drop to 51mhz. Since it takes several
tens of millisecond to ramp up cpu freq, the delay
impact negatively the performance of low latency CPU bound
tasks.
Given the power savings of several milliwatts running cpu
at 51mhz comparing to 102mhz or 204 mhz at idle, the idle
cpu freq is hence raised to 102mhz for smart panel device
and 204mhz for dump panel devices.
Bug 1036216
Change-Id: Ifb0ed88d4c5fcf5b637d09c587322cec72b8a08d
Signed-off-by: Wen Yi <wyi@nvidia.com>
(cherry picked from commit c8465feffcd0cf2401bbd6c6f535955dd68bda55)
Reviewed-on: http://git-master/r/132479
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Ujjaval Patel <upatel@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra/board-cardhu-power.c')
| -rw-r--r-- | arch/arm/mach-tegra/board-cardhu-power.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/board-cardhu-power.c b/arch/arm/mach-tegra/board-cardhu-power.c index e76cbc458914..677b38347514 100644 --- a/arch/arm/mach-tegra/board-cardhu-power.c +++ b/arch/arm/mach-tegra/board-cardhu-power.c @@ -1191,6 +1191,8 @@ int __init cardhu_suspend_init(void) cardhu_suspend_data.lp1_core_volt_high = 0x50; } #endif + if (is_display_board_dsi(display_board_info.board_id)) + cardhu_suspend_data.cpu_wake_freq = CPU_WAKE_FREQ_LOW; case BOARD_PM305: case BOARD_PM311: break; |