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SubjectRe: [PATCH] [RFC] Using hierarchy irqdomian to implement MTK intpol.
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On Thursday 25 September 2014, Thomas Gleixner wrote:
> On Thu, 25 Sep 2014, Joe.C wrote:
> > From: "Joe.C" <yingjoe.chen@mediatek.com>
> >
> > Here's the first draft of using hierarchy irqdomain to implement MTK intpol
> > support. I have tested it and intpol works fine. Before continue, I'd like
> > to get your comments. This is based on Jiang's hierarchy irqdomian [1] and
> > my mediatek SoC basic support [2].
> >
> > Simplified block diagram for interrupt:
> >
> > --------- ---------
> > ---| CIRQ |------|ARM GIC|
> > ---| |------| |
> > ---| |------| |
> > ---| |------| |
> > ---| |------| |
> > --------- ---------
> >
> > In device tree, interrupt-parent for other devices is cirq, child of gic.
> > This describe HW better and allow device to specify polarity as it is sent
> > by the device. I'm using interrupt-parent to specify irq domain parent in
> > cirq now. Maybe adding another name like 'interrupt-domain-parent' will be
> > better.
>
> I leave that to the DT folks.

interrupt-parent really defines a domain already, I think using this is
perfectly fine.


Arnd


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