Hi,
We are having trouble receiving some external interrupts on our MPC8541E processor. Our board and kernel image are loosely based on the MPC8540_ADS freescale design. Our embedded system is not used as a plug-in card. We are using the MPC8541 as the host PCI controller.
The interrupt line in question is used as a PCI interrupt input. We have already determined that the line is toggling (active low) and that the open_pic is configured to recognize active low, level triggered interrupts. However, the open_pic is also indicating that this interrupt input is disabled.
We tried to update the “mpc85xx_ads_map_irq” table in “mpc85xx_ads_common.c” to reflect our IDSEL -> PIRQx input but the problem persists.
Where are the interrupts enabled/disabled in ppc linux? We are using the 2.4.27 kernel.
Best regards,
Jason
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