The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/interrupt-controller/marvell,orion-intc.txt

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    1 Marvell Orion SoC interrupt controllers
    2 
    3 * Main interrupt controller
    4 
    5 Required properties:
    6 - compatible: shall be "marvell,orion-intc"
    7 - reg: base address(es) of interrupt registers starting with CAUSE register
    8 - interrupt-controller: identifies the node as an interrupt controller
    9 - #interrupt-cells: number of cells to encode an interrupt source, shall be 1
   10 
   11 The interrupt sources map to the corresponding bits in the interrupt
   12 registers, i.e.
   13 - 0 maps to bit 0 of first base address,
   14 - 1 maps to bit 1 of first base address,
   15 - 32 maps to bit 0 of second base address, and so on.
   16 
   17 Example:
   18         intc: interrupt-controller {
   19                 compatible = "marvell,orion-intc";
   20                 interrupt-controller;
   21                 #interrupt-cells = <1>;
   22                  /* Dove has 64 first level interrupts */
   23                 reg = <0x20200 0x10>, <0x20210 0x10>;
   24         };
   25 
   26 * Bridge interrupt controller
   27 
   28 Required properties:
   29 - compatible: shall be "marvell,orion-bridge-intc"
   30 - reg: base address of bridge interrupt registers starting with CAUSE register
   31 - interrupts: bridge interrupt of the main interrupt controller
   32 - interrupt-controller: identifies the node as an interrupt controller
   33 - #interrupt-cells: number of cells to encode an interrupt source, shall be 1
   34 
   35 Optional properties:
   36 - marvell,#interrupts: number of interrupts provided by bridge interrupt
   37       controller, defaults to 32 if not set
   38 
   39 Example:
   40         bridge_intc: interrupt-controller {
   41                 compatible = "marvell,orion-bridge-intc";
   42                 interrupt-controller;
   43                 #interrupt-cells = <1>;
   44                 reg = <0x20110 0x8>;
   45                 interrupts = <0>;
   46                 /* Dove bridge provides 5 interrupts */
   47                 marvell,#interrupts = <5>;
   48         };

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