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? TIA: Silvio -- -- S. Fricke ----------------------------- MAILTO:[EMAIL PROTECTED] -- Diplom-Informatiker (FH) Linux-Entwicklung JABBER: [EMAIL PROTECTED] ----------------------------------------------------------------------------
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