diff options
Diffstat (limited to 'arch/arm/mach-at91/include/mach/system.h')
| -rw-r--r-- | arch/arm/mach-at91/include/mach/system.h | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/arch/arm/mach-at91/include/mach/system.h b/arch/arm/mach-at91/include/mach/system.h index c80e090b367..ee8db152592 100644 --- a/arch/arm/mach-at91/include/mach/system.h +++ b/arch/arm/mach-at91/include/mach/system.h @@ -28,17 +28,16 @@ static inline void arch_idle(void) { -#ifndef CONFIG_DEBUG_KERNEL /* * Disable the processor clock. The processor will be automatically * re-enabled by an interrupt or by a reset. */ at91_sys_write(AT91_PMC_SCDR, AT91_PMC_PCK); -#else +#ifndef CONFIG_CPU_ARM920T /* * Set the processor (CP15) into 'Wait for Interrupt' mode. - * Unlike disabling the processor clock via the PMC (above) - * this allows the processor to be woken via JTAG. + * Post-RM9200 processors need this in conjunction with the above + * to save power when idle. */ cpu_do_idle(); #endif |