1Socionext SynQuacer External Interrupt Unit (EXIU) 2 3The Socionext Synquacer SoC has an external interrupt unit (EXIU) 4that forwards a block of 32 configurable input lines to 32 adjacent 5level-high type GICv3 SPIs. 6 7Required properties: 8 9- compatible : Should be "socionext,synquacer-exiu". 10- reg : Specifies base physical address and size of the 11 control registers. 12- interrupt-controller : Identifies the node as an interrupt controller. 13- #interrupt-cells : Specifies the number of cells needed to encode an 14 interrupt source. The value must be 3. 15- socionext,spi-base : The SPI number of the first SPI of the 32 adjacent 16 ones the EXIU forwards its interrups to. 17 18Notes: 19 20- Only SPIs can use the EXIU as an interrupt parent. 21 22Example: 23 24 exiu: interrupt-controller@510c0000 { 25 compatible = "socionext,synquacer-exiu"; 26 reg = <0x0 0x510c0000 0x0 0x20>; 27 interrupt-controller; 28 interrupt-parent = <&gic>; 29 #interrupt-cells = <3>; 30 socionext,spi-base = <112>; 31 }; 32