[PATCH 1/6] PM: runtime: enable wake irq after runtime_suspend hook called
Tony Lindgren
tony at atomide.com
Fri Apr 9 06:40:36 BST 2021
* Ikjoon Jang <ikjn at chromium.org> [210409 05:33]:
> Hi Chunfeng,
>
> On Thu, Apr 8, 2021 at 5:35 PM Chunfeng Yun <chunfeng.yun at mediatek.com> wrote:
> >
> > When the dedicated wake irq is level trigger, enable it before
> > calling runtime_suspend, will trigger an interrupt.
> >
> > e.g.
> > for a low level trigger type, it's low level at running time (0),
> > and becomes high level when enters suspend (runtime_suspend (1) is
> > called), a wakeup signal at (2) make it become low level, wake irq
> > will be triggered.
> >
> > ------------------
> > | ^ ^|
> > ---------------- | | --------------
> > |<---(0)--->|<--(1)--| (3) (2) (4)
> >
>
> Can't we just use a falling edge type for this irq line?
Sounds reasonable to me :)
Tony
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