Socionext SynQuacer External Interrupt Unit (EXIU) The Socionext Synquacer SoC has an external interrupt unit (EXIU) that forwards a block of 32 configurable input lines to 32 adjacent level-high type GICv3 SPIs. Required properties: - compatible : Should be "socionext,synquacer-exiu". - reg : Specifies base physical address and size of the control registers. - interrupt-controller : Identifies the node as an interrupt controller. - #interrupt-cells : Specifies the number of cells needed to encode an interrupt source. The value must be 3. - socionext,spi-base : The SPI number of the first SPI of the 32 adjacent ones the EXIU forwards its interrups to. Notes: - Only SPIs can use the EXIU as an interrupt parent. Example: exiu: interrupt-controller@510c0000 { compatible = "socionext,synquacer-exiu"; reg = <0x0 0x510c0000 0x0 0x20>; interrupt-controller; interrupt-parent = <&gic>; #interrupt-cells = <3>; socionext,spi-base = <112>; };