From: Fredrik Roubert <fredrik.roubert@barco.com>
To: linuxppc-embedded@ozlabs.org
Subject: ARCH=powerpc: IRQ numbers change mysteriously
Date: Mon, 23 Oct 2006 18:41:16 +0200 [thread overview]
Message-ID: <20061023164116.GC15953@igloo.df.lth.se> (raw)
Hi!
On my MPC8439 based board, running Linux 2.6.18 with ARCH=powerpc, the
IRQ's for the I2C behave in a for me mysterious way.
In my DTS file, I have the following:
i2c@3000 {
device_type = "i2c";
compatible = "fsl-i2c";
reg = <3000 100>;
interrupts = <e 8>;
interrupt-parent = <&/soc8349@ff400000/pic@700>;
dfsrr;
};
i2c@3100 {
device_type = "i2c";
compatible = "fsl-i2c";
reg = <3000 100>;
interrupts = <f 8>;
interrupt-parent = <&/soc8349@ff400000/pic@700>;
dfsrr;
};
But when I boot the system and cat /proc/interrupts, the output says:
18: 61 IPIC Level i2c-mpc
19: 0 IPIC Level i2c-mpc
This doesn't make sense to me. Why are the IRQ numbers changed? They are
still adjacent, so it seems to be some logic to the change. Does anyone
know what this is?
Cheers // Fredrik Roubert
--
Barco Medical Imaging | +32 56 233549
http://www.barco.com/medical/ | fredrik.roubert@barco.com
next reply other threads:[~2006-10-23 17:25 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-23 16:41 Fredrik Roubert [this message]
2006-10-24 7:20 ` ARCH=powerpc: IRQ numbers change mysteriously Li Yang-r58472
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