Meaning of Parameters in DTS File

[avinashh]

Hi,

can anyone explain what does each value represents in following dts structure for PCI bus of P2041?

interrupts = <16 2 1 13>;
interrupt-map-mask = <0xf800 0 0 7>;
interrupt-map = <0 0 0 1 &mpic 42 1 0 0

                            0 0 0 2 &mpic 9 1 0 0

                            0 0 0 3 &mpic 10 1 0 0

                            0 0 0 4 &mpic 11 1 0 0>;

thanks,

Avinash

[r8070z]

Have a great day,

The device tree needs a way of mapping each PCI interrupt signal to the inputs of the interrupt controller. The #interrupt-cells, #interrupt-map and #interrupt-map-mask properties are used to describe the interrupt mapping. Please see

http://elinux.org/Device_Tree_Usage#Advanced_Interrupt_Mapping

It provides explanation right for this case.

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