Re: [PATCH] ARM: dts: Fix omap l4per idling with wlcore edge sensitive interrupt

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* Reizer, Eyal <eyalr@xxxxxx> [171014 23:55]:
> > From: Tony Lindgren [mailto:tony@xxxxxxxxxxx]
> > 
> > On omaps, if the wlcore interrupt is configured as level instead of edge,
> > L4PER will stop doing hardware based idling after ifconfig wlan0 down is
> > done and the WL_EN line is pulled down.
> > 
> Do we understand why omap is doing this? Is it a bug or a normal behavior?
> 
> AFAIK way back edge interrupts have been used. On some omaps based boards.
> They have used level interrupts instead due to occasional interrupts being missed 
> By the omap interrupts controller when using edge based interrupts which caused 
> Issues. This was the reason many boards are set to using level based interrupts which 
> Seemed much more robust.

No idea yet why exactly the gpio modules won't idle after that. But for making
edge interrupts behave, I suspect that Grygorii's patch "[RESEND PATCH] gpio:
omap: Fix lost edge interrupts" fixes those issues.

Regards,

Tony
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