Question on setting up external interrupt for P1020 (MPC8xxx) with device tree
kho at belairnetworks.com
Sat Feb 12 06:07:26 EST 2011
I am trying to write a device driver that uses an external interrupt
(one of the 16 irq lines) for the Freescale P1020 processor and I hope
some of you can help. Am I suppose to setup a separate node in the dts
and look for that node in my driver to setup the interrupt? Or does the
dts interrupt declaration belong to the interrupt-controller
declaration? I noticed the mpc8xxx_gpio driver defined its own irq_chip
but I thought that may be because each gpio pin can trigger an
interrupt. Do I need to define my own irq_chip structure for my device
even if I am using one of the hard irq lines?
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