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Diffstat (limited to 'arch/arm/mach-at91/Kconfig')
| -rw-r--r-- | arch/arm/mach-at91/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig index 68537e37387..5aafb2e2ca7 100644 --- a/arch/arm/mach-at91/Kconfig +++ b/arch/arm/mach-at91/Kconfig @@ -323,6 +323,19 @@ config AT91_PROGRAMMABLE_CLOCKS Select this if you need to program one or more of the PCK0..PCK3 programmable clock outputs. +config AT91_SLOW_CLOCK + bool "Suspend-to-RAM disables main oscillator" + depends on SUSPEND + help + Select this if you want Suspend-to-RAM to save the most power + possible (without powering off the CPU) by disabling the PLLs + and main oscillator so that only the 32 KiHz clock is available. + + When only that slow-clock is available, some peripherals lose + functionality. Many can't issue wakeup events unless faster + clocks are available. Some lose their operating state and + need to be completely re-initialized. + config AT91_TIMER_HZ int "Kernel HZ (jiffies per second)" range 32 1024 |