Kernel-4.18.0-80.el8_socionext,synquacer-exiu

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.
  

• interrupt-parent : phandle of the GIC these interrupts are routed to.
• 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>;
};