Messages in this thread Patch in this message |  | | From | Wenyou Yang <> | Subject | [PATCH 3/3] pm: at91: flush data cache and clean, invalidate and disable the L2 cache | Date | Thu, 12 Feb 2015 10:52:58 +0800 |
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Flush data cache, and clean, invalidate and disable the L2 cache before going to suspend. Restore the L2 cache configuration and re-enable the L2 cache after waking up.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> --- arch/arm/mach-at91/pm.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c index 9075b41..2574bad 100644 --- a/arch/arm/mach-at91/pm.c +++ b/arch/arm/mach-at91/pm.c @@ -30,6 +30,7 @@ #include <asm/mach/time.h> #include <asm/mach/irq.h> #include <asm/fncpy.h> +#include <asm/cacheflush.h> #include <mach/cpu.h> #include <mach/hardware.h> @@ -145,8 +146,13 @@ static void at91_pm_suspend(suspend_state_t state) pm_data |= (state == PM_SUSPEND_MEM) ? AT91_PM_MODE(AT91_PM_SLOW_CLOCK) : 0; + flush_cache_all(); + outer_disable(); + at91_suspend_sram_fn(at91_pmc_base, at91_ramc_base[0], at91_ramc_base[1], pm_data); + + outer_resume(); } static int at91_pm_enter(suspend_state_t state) -- 1.7.9.5
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