Scott Wood wrote:
On Wed, Sep 03, 2008 at 03:55:41PM -0700, Oscar Takeshita wrote:
I've been trying to hook an IRQ on a modified mpc8349emitx board without
success.
The IRQ is hooked physically to IRQ1/GPIO2[13] on the mpc8349e. No other
devices are
tied to this pin.
I'm using uboot 1.2.0 and kernel 2.6.22.19.
Do I need to have a dts entry for this interrupt in order to make
request_irq() succeed?
How can I find the IRQ number? I tried probe_irq_on/off unfortunately it
did not work.
Would it be MPC83xx_IRQ_EXT1 in arch/powerpc/include/asm/mpc83xx.h ?
I'm new doing kernel work. Any hints appreciated.
You need to describe the IRQ in a device tree node and use
irq_of_parse_and_map(). request_irq() takes virtual IRQ numbers.
Maybe we should put together an arch/powerpc FAQ...
That would be wonderful :-) This could help many [of us] over these
initial speed-bumps.
--
------------------------------------------------------------
Gary Thomas | Consulting for the
MLB Associates | Embedded world
------------------------------------------------------------
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-dev
