On Wed, 10 Jul 2019, Denis Obrezkov wrote:
> Hi,
>
> On 7/10/19 9:49 PM, Stefano Stabellini wrote:
>
> >
> > phandle = <0x00000002>;
> >
> > I think that means that interrupts go to the GIC via Crossbar; i.e. the
> > parent interrupt controller of Crossbar is the GIC.
> >
> But the crossbar's interrupt-parent node is 0x00000008 and phandle value
> 0x00000008 belongs to
> interrupt-controller@48281000 {
> compatible = "ti,omap5-wugen-mpu", "ti,omap4-wugen-mpu";
>
> For me it looks like interrupts from crossbar goes to wugen and the from
> wugen to GIC. But I don't quite understand it.
Hi Denis,
I only read your email and got a partial picture. I read the full device
tree now and the hierarchy is as follow:
- crossbar routes to phandle 8
- phandle 8 is omap5-wugen-mpu and routes to phandle 2
- phandle 2 is the GIC
So:
crossbar -> omap5-wugen-mpu -> GIC
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