diff options
| author | Scott Williams <scwilliams@nvidia.com> | 2011-08-04 13:32:10 -0700 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2013-09-14 00:56:02 -0700 |
| commit | fe4fc32a5fc224d3a54fcddcc2e1263f12c7a41c (patch) | |
| tree | 9be8de4a9c6537534b7999b7baf892886bf85b77 /arch/arm/mach-tegra/sleep.h | |
| parent | 6aba0be8e5e6867c672c45e62460ac27f14fdc25 (diff) | |
ARM: tegra: power: Save CPU context to non-cacheable stack
The standard cpu_suspend does not work if there is an exernal
L2 cache in the system individual CPUs are suspending without
shutting down the whole CPU complex. As a workaround for this
problem, we must save the CPU context to a non-cacheable region
of memory.
Change-Id: I2fffbc77ed4f17fe9710307aaacda80836bacee8
Signed-off-by: Scott Williams <scwilliams@nvidia.com>
Rebase-Id: R7328c032c2a13775aa09432e119ea845ded85930
Diffstat (limited to 'arch/arm/mach-tegra/sleep.h')
| -rw-r--r-- | arch/arm/mach-tegra/sleep.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/sleep.h b/arch/arm/mach-tegra/sleep.h index cba062e9c723..93ab2bbf8282 100644 --- a/arch/arm/mach-tegra/sleep.h +++ b/arch/arm/mach-tegra/sleep.h @@ -19,6 +19,12 @@ #include "iomap.h" +#ifdef CONFIG_CACHE_L2X0 +#define USE_TEGRA_CPU_SUSPEND 1 +#else +#define USE_TEGRA_CPU_SUSPEND 0 +#endif + #define TEGRA_POWER_SDRAM_SELFREFRESH (1 << 26) /* SDRAM is in self-refresh */ #define TEGRA_POWER_HOTPLUG_SHUTDOWN (1 << 27) /* Hotplug shutdown */ #define TEGRA_POWER_CLUSTER_G (1 << 28) /* G CPU */ |