From 02a00cf672a37292c31bbdde191712bfa40a4f1d Mon Sep 17 00:00:00 2001 From: Haavard Skinnemoen Date: Sun, 24 Feb 2008 13:51:38 +0100 Subject: avr32: Power Management support ("standby" and "mem" modes) Implement Standby support. In this mode, we'll suspend all drivers, put the SDRAM in self-refresh mode and switch off the HSB bus ("frozen" mode.) Implement Suspend-to-mem support. In this mode, we suspend all drivers, put the SDRAM into self-refresh mode and switch off all internal clocks except the 32 kHz oscillator ("stop" mode.) The lowest-level suspend code runs from a small portion of SRAM allocated at startup time. This gets rid of a small potential race with the SDRAM where we might try to enter self-refresh mode in the middle of an icache burst. We also relocate all interrupt and exception handlers to SRAM during the small window when we enter and exit the low-power modes. We don't need to do any special tricks to start and stop the PLL. The main clock is automatically gated by hardware until the PLL is stable. Signed-off-by: Haavard Skinnemoen --- arch/avr32/Kconfig | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch/avr32/Kconfig') diff --git a/arch/avr32/Kconfig b/arch/avr32/Kconfig index e8ee5fa017b6..45d63c986015 100644 --- a/arch/avr32/Kconfig +++ b/arch/avr32/Kconfig @@ -205,6 +205,11 @@ endmenu menu "Power management options" +source "kernel/power/Kconfig" + +config ARCH_SUSPEND_POSSIBLE + def_bool y + menu "CPU Frequency scaling" source "drivers/cpufreq/Kconfig" -- cgit v1.2.3