Samsung S3C6410 SoC/devicetree: how to describe RTC interrupts connected to two different interrupt parents?

[Juergen Borleis]

Myself wrote:
> the Samsung S3C6410 SoC comes with an RTC with two interrupts connected to
> two different interrupt controllers.
>
> The old platform code uses this resource to describe it:
>
> static struct resource s3c_rtc_resource[] = {
> 	[0] = DEFINE_RES_MEM(S3C24XX_PA_RTC, SZ_256),
> 	[1] = DEFINE_RES_IRQ(IRQ_RTC),  <-- channel 2 at VIC0
> 	[2] = DEFINE_RES_IRQ(IRQ_TICK), <-- channel 28 at VIC1
> };
>
> In the devicetree I can define multiple interrupt channels with the
> keyword 'interrupts' but it seems all of them must share the same interrupt
> parent defined via 'interrupt-parent'. How to handle the special S3C6410
> case?
> The file "Documentation/devicetree/bindings/rtc/s3c-rtc.txt" isn't really
> helpful.

Ahh, "interrupts-extended" is the keyword... solved.

jbo