CONFIG_AT91_SLOW_CLOCK: Suspend-to-RAM disables main oscillator

General informations

The Linux kernel configuration item CONFIG_AT91_SLOW_CLOCK:

• prompt: Suspend-to-RAM disables main oscillator
• type: bool
• depends on: CONFIG_SUSPEND
• defined in arch/arm/mach-at91/Kconfig
• found in Linux kernels: 2.6.28–2.6.39, 3.0–3.19, 4.0

Help text

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.

Hardware

LKDDb

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Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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