On 9/12/07, S. Fricke <[EMAIL PROTECTED]> wrote: > Hello, > > > > I have looked up "kernel/irq/manage.c". "-ENOSYS" is returned on function > > > "setup_irq" because the used irq(MPC52xx_IRQ2) is the same as no_irq_chip. > > > > > > THE MPC52xx_IRQ2 is a excerpt from "include/ppc/mpc52xx.h" (per copy > > > paste), but mpc52xx is (now) a powerpc-arch. What is the desired value for > > > IRQ-2 on a mpc5200b? > > > > The irq number you pass into request_irq is a system-wide irq number; > > it doesn't necessarily map directly onto the MPC52xx irq number. > > Typically, you'd have a node for your device in the device tree which > > has a phandle back to the interrupt node and you would use > > irq_of_parse_and_map() to map it back to a system-wide irq number. > > The IRQ-pin-2 belongs to "PIN-configuration-nodes" described in > "booting-without-of.txt"? Than, what is the QE for my MPC5200B? > > Can u give me an example with a single IRQ of a configuration-node for a > dts?
[EMAIL PROTECTED] { interrupts = <1 2 3>; interrupt-parent = <&mpc5200_pic>; }; The interrupts property matches the size of the #interrupt-cells property in the interrupt controller node. For the 5200-intc, each interrupt is described by 3 cells; l1, l2 and sense which is a reflection of the interrupt controller architecture. For IRQ0, l1=0, l2=0; IRQ1, l1=1, l2=1; IRQ2, l1=1 and l2=2; IRQ3, l1=1, l2=3 Sense is described in mpc52xx-device-tree-bindings.txt Cheers, g. -- Grant Likely, B.Sc., P.Eng. Secret Lab Technologies Ltd. [EMAIL PROTECTED] (403) 399-0195 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev