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| author | Joseph Lo <josephl@nvidia.com> | 2012-10-31 10:41:17 +0100 |
|---|---|---|
| committer | Stephen Warren <swarren@nvidia.com> | 2012-11-15 23:09:21 +0100 |
| commit | d457ef358f3c7179c428becda45b1dfd2b8cf98a (patch) | |
| tree | 90299ea88a7fb8ebe02cb2cd45160db13afe6775 /arch/arm/mach-tegra/reset.h | |
| parent | ARM: tegra: cpuidle: add CPU resume function (diff) | |
| download | linux-d457ef358f3c7179c428becda45b1dfd2b8cf98a.tar.xz linux-d457ef358f3c7179c428becda45b1dfd2b8cf98a.zip | |
ARM: tegra30: cpuidle: add powered-down state for secondary CPUs
This supports power-gated idle on secondary CPUs for Tegra30. The
secondary CPUs can go into powered-down state independently. When
CPU goes into this state, it saves it's contexts and puts itself
to flow controlled WFI state. After that, it will been power gated.
Be aware of that, you may see the legacy power state "LP2" in the
code which is exactly the same meaning of "CPU power down".
Based on the work by:
Scott Williams <scwilliams@nvidia.com>
Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra/reset.h')
| -rw-r--r-- | arch/arm/mach-tegra/reset.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/reset.h b/arch/arm/mach-tegra/reset.h index de88bf851dd3..c90d8e9c4ad2 100644 --- a/arch/arm/mach-tegra/reset.h +++ b/arch/arm/mach-tegra/reset.h @@ -29,6 +29,8 @@ #ifndef __ASSEMBLY__ +#include "irammap.h" + extern unsigned long __tegra_cpu_reset_handler_data[TEGRA_RESET_DATA_SIZE]; void __tegra_cpu_reset_handler_start(void); @@ -36,6 +38,13 @@ void __tegra_cpu_reset_handler(void); void __tegra_cpu_reset_handler_end(void); void tegra_secondary_startup(void); +#ifdef CONFIG_PM_SLEEP +#define tegra_cpu_lp2_mask \ + (IO_ADDRESS(TEGRA_IRAM_BASE + TEGRA_IRAM_RESET_HANDLER_OFFSET + \ + ((u32)&__tegra_cpu_reset_handler_data[TEGRA_RESET_MASK_LP2] - \ + (u32)__tegra_cpu_reset_handler_start))) +#endif + #define tegra_cpu_reset_handler_offset \ ((u32)__tegra_cpu_reset_handler - \ (u32)__tegra_cpu_reset_handler_start) |