Documentation/devicetree/bindings/interrupt-controller/fsl,ls-extirq.txt

   1 * Freescale Layerscape external IRQs
   2
   3 Some Layerscape SOCs (LS1021A, LS1043A, LS1046A) support inverting
   4 the polarity of certain external interrupt lines.
   5
   6 The device node must be a child of the node representing the
   7 Supplemental Configuration Unit (SCFG).
   8
   9 Required properties:
  10 - compatible: should be "fsl,<soc-name>-extirq", e.g. "fsl,ls1021a-extirq".
  11 - #interrupt-cells: Must be 2. The first element is the index of the
  12   external interrupt line. The second element is the trigger type.
  13 - #address-cells: Must be 0.
  14 - interrupt-controller: Identifies the node as an interrupt controller
  15 - reg: Specifies the Interrupt Polarity Control Register (INTPCR) in
  16   the SCFG.
  17 - interrupt-map: Specifies the mapping from external interrupts to GIC
  18   interrupts.
  19 - interrupt-map-mask: Must be <0xffffffff 0>.
  20
  21 Example:
  22         scfg: scfg@1570000 {
  23                 compatible = "fsl,ls1021a-scfg", "syscon";
  24                 reg = <0x0 0x1570000 0x0 0x10000>;
  25                 big-endian;
  26                 #address-cells = <1>;
  27                 #size-cells = <1>;
  28                 ranges = <0x0 0x0 0x1570000 0x10000>;
  29
  30                 extirq: interrupt-controller@1ac {
  31                         compatible = "fsl,ls1021a-extirq";
  32                         #interrupt-cells = <2>;
  33                         #address-cells = <0>;
  34                         interrupt-controller;
  35                         reg = <0x1ac 4>;
  36                         interrupt-map =
  37                                 <0 0 &gic GIC_SPI 163 IRQ_TYPE_LEVEL_HIGH>,
  38                                 <1 0 &gic GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>,
  39                                 <2 0 &gic GIC_SPI 165 IRQ_TYPE_LEVEL_HIGH>,
  40                                 <3 0 &gic GIC_SPI 167 IRQ_TYPE_LEVEL_HIGH>,
  41                                 <4 0 &gic GIC_SPI 168 IRQ_TYPE_LEVEL_HIGH>,
  42                                 <5 0 &gic GIC_SPI 169 IRQ_TYPE_LEVEL_HIGH>;
  43                         interrupt-map-mask = <0xffffffff 0x0>;
  44                 };
  45         };
  46
  47
  48         interrupts-extended = <&gic GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>,
  49                               <&extirq 1 IRQ_TYPE_LEVEL_LOW>;