Kernel-4.18.0-80.el8_sigma,smp8642-intc

Sigma Designs SMP86xx/SMP87xx secondary interrupt controller

Required properties:

• compatible: should be “sigma,smp8642-intc”
• reg: physical address of MMIO region
• ranges: address space mapping of child nodes
• interrupt-parent: phandle of parent interrupt controller
• interrupt-controller: boolean
• #address-cells: should be <1>
• #size-cells: should be <1>

One child node per control block with properties:

• reg: address of registers for this control block
• interrupt-controller: boolean
• #interrupt-cells: should be <2>, interrupt index and flags per interrupts.txt
• interrupts: interrupt spec of primary interrupt controller

Example:

interrupt-controller@6e000 {
compatible = “sigma,smp8642-intc”;
reg = <0x6e000 0x400>;
ranges = <0x0 0x6e000 0x400>;
interrupt-parent = <&gic>;
interrupt-controller;
#address-cells = <1>;
#size-cells = <1>;

irq0: interrupt-controller@0 {
    reg = <0x000 0x100>;
    interrupt-controller;
    #interrupt-cells = <2>;
    interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
};

irq1: interrupt-controller@100 {
    reg = <0x100 0x100>;
    interrupt-controller;
    #interrupt-cells = <2>;
    interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
};

irq2: interrupt-controller@300 {
    reg = <0x300 0x100>;
    interrupt-controller;
    #interrupt-cells = <2>;
    interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
};

};