diff options
| author | Kamal Kannan Balagopalan <kbalagopalan@nvidia.com> | 2011-08-30 14:15:42 -0700 |
|---|---|---|
| committer | Annamaria Pyreddy <apyreddy@nvidia.com> | 2011-09-13 15:08:13 -0700 |
| commit | bdda76108a91905c49f6b207c08f4e78e8e4903f (patch) | |
| tree | 63dd3b6c98855c06606054434c125a2a80727231 /arch | |
| parent | 9d265212b17cbede0f05bc8137f6f7bf96640934 (diff) | |
ARM: tegra: Avoid timer calibration on slave cpu's
Use the value calibrated by master cpu.
Bug 850933
Change-Id: If56f76f5e0e5fa47e15a9ceed4853b9e3c329552
Reviewed-on: http://git-master/r/49922
Reviewed-by: Aleksandr Frid <afrid@nvidia.com>
Reviewed-by: Kamal Balagopalan <kbalagopalan@nvidia.com>
Tested-by: Kamal Balagopalan <kbalagopalan@nvidia.com>
Reviewed-by: Krishna Reddy <vdumpa@nvidia.com>
Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-tegra/platsmp.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/platsmp.c b/arch/arm/mach-tegra/platsmp.c index 6cacdb910af4..35fe4a7bbb59 100644 --- a/arch/arm/mach-tegra/platsmp.c +++ b/arch/arm/mach-tegra/platsmp.c @@ -89,6 +89,12 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle) static void __iomem *vector_base = (IO_ADDRESS(TEGRA_EXCEPTION_VECTORS_BASE) + 0x100); #endif + /* Avoid timer calibration on slave cpus. Use the value calibrated + * on master cpu. This reduces the bringup time for each slave cpu + * by around 260ms. + */ + preset_lpj = loops_per_jiffy; + /* * set synchronisation state between this boot processor * and the secondary one |