On Friday 22 March 2013, Heiko Stübner wrote:
> As suggested by Rob Herring move back to get the parent releationship from dt
> like in the first versions, but set the handler from the interrupt property
> rather than from a specific list.
>
> This version also implements (hopefully correctly) an idea from him and
> Arnd Bergmann to have the parent relationship not described in the controller
> node but the device nodes instead.
>
> Therefore the main controller continues to use a two-cell descriptor to set
> hwirq and trigger type but the sub-controller switches to a three-cell
> descriptor where the third bit describes the hwirq of its parent irq in the
> main controller.
>
> As a result a serial node would then look like:
> serial@50000000 {
> compatible = "samsung,s3c2410-uart";
> reg = <0x50000000 0x4000>;
> interrupt-parent = <&subintc>;
> interrupts = <0 4 28>, <1 4 28>;
> };
>
> Tested on a s3c2416-based board.
>
> As it depends on changes already pending for 3.10 it should probably go thru
> the samsung tree.
Hi Heiko,
I should probably read the original discussion thread again. I already commented
on the binding here, but I may have missed something important that led to
it being the way it is now.
Arnd
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