Scott,
thanks for your reply.
Honestly I don't think the board wiring is incorrect.
FPGA goes to IRQ0 and miniPCI is wired to IRQ1.
Maybe there's a crosstalk problem since the pull-up resistors are
packaged inside an array ... I'll check this.
regards,
André
Scott Wood schrieb:
André Schwarz wrote:
There are two external PCI devices connected (FPGA + miniPCI socket).
The FPGA is working fine and uses IRQ0 for its PCI_INTA line.
As soon there's a miniPCI module present and the driver loaded
(actually an ath5k WiFi module) the system complains after a while :
irq 48: nobody cared
handlers: .... location of the FPGA irq handler
Disabling IRQ #48
-> This is weird since the FPGA isn't working at all and IRQ0 is *not*
asserted !
Are you *sure* that IRQ0 isn't asserted? The IPIC seems to think it is.
Of course the miniPCI irq is routed to a different pin on the CPU (IRQ1).
Perhaps the board wiring is incorrect?
interrupt-map = <0x5800 0 0 1 &ipic 0x30 0x8 -> FPGA @ IRQ0
0x6000 0 0 1 &ipic 0x11 0x8 -> miniPCI INTA @ IRQ1
0x6000 0 0 2 &ipic 0x11 0x8>; -> miniPCI INTB @ IRQ1
Is it legal to use a single irq pin twice ?
Yes.
-Scott
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