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From: "Henry Bausley" <hbausley@deltatau.com>
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Subject: AMCC PPC460EX Canyonlands Hardwired interrupt
Date: Tue, 26 Aug 2008 00:41:27 -0700
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How do I go about using one of the gpio pins for my own interrupt with the 
Canyonlands board.  Previously I used a yosemite (ppc) board and modified 
the yosemite.c file so that IRQ0 and IRQ1 were edge sensitive and and stole 
the ETH0/1 phy hardware interrupts for my own purposes and everything 
worked.

I am trying to do the same with the Canyonlands (powerpc) board.but cannot 
seem to enable the interrupt.

I am using the 2.6.26.2 denx kernel and xenomai 2.4.5