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Diffstat (limited to 'arch/sh/Kconfig')
| -rw-r--r-- | arch/sh/Kconfig | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 48308dc86e33..aa1ebc561b84 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -423,6 +423,24 @@ config SH_TIMER_IRQ default "140" if CPU_SUBTYPE_SH7206 default "16" +config NO_IDLE_HZ + bool "Dynamic tick timer" + help + Select this option if you want to disable continuous timer ticks + and have them programmed to occur as required. This option saves + power as the system can remain in idle state for longer. + + By default dynamic tick is disabled during the boot, and can be + manually enabled with: + + echo 1 > /sys/devices/system/timer/timer0/dyn_tick + + Alternatively, if you want dynamic tick automatically enabled + during boot, pass "dyntick=enable" via the kernel command string. + + Please note that dynamic tick may affect the accuracy of + timekeeping on some platforms depending on the implementation. + config SH_PCLK_FREQ int "Peripheral clock frequency (in Hz)" default "27000000" if CPU_SUBTYPE_SH73180 || CPU_SUBTYPE_SH7343 |