how to use p4040's external irq?

[mgkiller]

hi all,

i have an problem about external interrupt 0 on p4040.

since i know that p4040's interrupt controller is similar witch p2010's in user manual , but when I use the previous p2010's method, request_irq() always fail.

anyone give me a p4040 external interrupt 0 demo routine, including external interrupt register routine and its device tree node description.

Any help is appreciated!

[mgkiller · Accepted solution]

i solved this problem by correcting my device tree.

[yidingli]

Hi changbao,

When you call request_irq, how did you determine the irq number you need to pass? I'm still trying to figure out how on P4040 the external interrupts are hooked up to CPU, so please bare with me.

Thanks in advance and regards,

Li