[PATCH] ARM: OMAP2+: timer: remove CONFIG_OMAP_32K_TIMER

Russ Dill russ.dill at gmail.com
Fri Dec 14 18:58:06 EST 2012


On Thu, Nov 8, 2012 at 9:08 AM, Hiremath, Vaibhav <hvaibhav at ti.com> wrote:
> No we do not have 32k_counter block in AM335x.
>
> If you are referring to 32Khz clock availability alone, then yes, we need to
> get persistent clock and we use RTC 32Khz clock source for it.
> But please note that this is not a 32k_counter block which OMAP family of
> devices has.
>
> The way AM335x works is, we have timers (0-7), timer0 being secure timer.
> We use timer1 and timer2 for clockevent and clocksource and they are driven
> by 26MHz OSC clock currently. So when you go into Low power state, OSC is turned off and you need persistent clock for time keeping, right?
>
> And only persistent clock available is RTC 32khz crystal clock, being RTC is
> in wakeup domain.

RTC domain.



More information about the linux-arm-kernel mailing list