| Message ID | 1425873226-8158-1-git-send-email-wenyou.yang@atmel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/arch/arm/mach-at91/pm_suspend.S b/arch/arm/mach-at91/pm_suspend.S index 0c520c3..95c3404 100644 --- a/arch/arm/mach-at91/pm_suspend.S +++ b/arch/arm/mach-at91/pm_suspend.S @@ -60,6 +60,24 @@ tmp2 .req r5 beq 1b .endm +/* + * Put the processor to enter the idle state + */ + .macro at91_cpu_idle + +#if defined(CONFIG_CPU_V7) + mov tmp1, #AT91_PMC_PCK + str tmp1, [pmc, #AT91_PMC_SCDR] + + dsb + + wfi @ Wait For Interrupt +#else + mcr p15, 0, tmp1, c7, c0, 4 +#endif + + .endm + .text /* @@ -137,7 +155,7 @@ skip_disable_main_clock: ldr pmc, .pmc_base /* Wait for interrupt */ - mcr p15, 0, tmp1, c7, c0, 4 + at91_cpu_idle ldr r0, .pm_mode tst r0, #AT91_PM_SLOW_CLOCK
Add the WFI instruction to make the cpu to the idle state. In the meanwhile, disable the processor's clock. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> --- arch/arm/mach-at91/pm_suspend.S | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-)