Cpu Idle Driver for the AT91 processors
modulename: cpuidle-at91.ko
configname: CONFIG_ARM_AT91_CPUIDLE
Linux Kernel Configuration
└─>Power management and ACPI options
└─>CPU Idle
└─>ARM CPU Idle Drivers
└─>Cpu Idle Driver for the AT91 processors
In linux kernel since version 3.10 (release Date: 2013-06-30)
Select this to enable cpuidle for AT91 processors