* how are the interrupts mapped on the taiga board?
@ 2007-06-07 19:55 Leisner, Martin
2007-06-07 20:17 ` Sergei Shtylyov
0 siblings, 1 reply; 2+ messages in thread
From: Leisner, Martin @ 2007-06-07 19:55 UTC (permalink / raw)
To: linuxppc-embedded; +Cc: Lund, Nathan
I'm looking at mpc7448hpc2.dts -- and the tsi108 specs...
I see how TTYS0 is IRQ12 and the ethernet is IRQ16...that agrees with
the file...
and the tundra TSi108 spec.
But in after we boot in /proc/interrupts:
16: 1796 Tsi108_PIC Edge serial
18: 24148 Tsi108_PIC Level eth0
I don't see in the .dts a mapping from 12->16 and 16->18.
Nore have I found anything in the source...
I using 2.6.21.1.
How is this done?
marty
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: how are the interrupts mapped on the taiga board?
2007-06-07 19:55 how are the interrupts mapped on the taiga board? Leisner, Martin
@ 2007-06-07 20:17 ` Sergei Shtylyov
0 siblings, 0 replies; 2+ messages in thread
From: Sergei Shtylyov @ 2007-06-07 20:17 UTC (permalink / raw)
To: Leisner, Martin; +Cc: Lund, Nathan, linuxppc-embedded
Leisner, Martin wrote:
> I'm looking at mpc7448hpc2.dts -- and the tsi108 specs...
> I see how TTYS0 is IRQ12 and the ethernet is IRQ16...that agrees with
> the file...
> and the tundra TSi108 spec.
> But in after we boot in /proc/interrupts:
>
> 16: 1796 Tsi108_PIC Edge serial
> 18: 24148 Tsi108_PIC Level eth0
> I don't see in the .dts a mapping from 12->16 and 16->18.
> Nore have I found anything in the source...
> I using 2.6.21.1.
> How is this done?
It's done by arch/powerpc kernel itself which remaps any IRQs < 16.
WBR, Sergei
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2007-06-07 19:55 how are the interrupts mapped on the taiga board? Leisner, Martin
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