[PATCH] arm: dts: dra7: arch timer sits in always-on power domain
tony at atomide.com
Wed Jul 15 03:00:36 PDT 2015
* Mark Rutland <mark.rutland at arm.com> [150715 02:27]:
> On Mon, Jul 13, 2015 at 09:41:41PM +0100, Felipe Balbi wrote:
> > According to DRA7x TRM section 4.3.5 Realtime Counter (Master Counter),
> > the realtime counter sits in the Wakeup Always-On Power domain.
> > Furthermore, the counter will automatically switch the 32K clock source
> > when MPU goes into standby and automatically switch back to SYS_CLK or
> > ABE_LP when MPU goes out of standby.
> While the counter is in an always-on domain (the architecture mandates
> this) I don't think that applies to the timers (i.e. the comparators
> within a CPU), which are almost certainly not in an always-on domain.
> I suspect that this is incorrect, and it will be very painful to debug
> if it is...
OK good point. And there would have to be some wake-up line wired to the
IO chain or the PMIC in this case if the comparator was always on.
Dropping this patch for now anyways.
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