FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/pci/altera-pcie-msi.txt

     * Altera PCIe MSI controller
     
     Required properties:
     - compatible:   should contain "altr,msi-1.0"
     - reg:          specifies the physical base address of the controller and
                     the length of the memory mapped region.
     - reg-names:    must include the following entries:
                     "csr": CSR registers
                     "vector_slave": vectors slave port region
    - interrupts:   specifies the interrupt source of the parent interrupt
                    controller. The format of the interrupt specifier depends on the
                    parent interrupt controller.
    - num-vectors:  number of vectors, range 1 to 32.
    - msi-controller:       indicates that this is MSI controller node
    
    
    Example
    msi0: msi@0xFF200000 {
            compatible = "altr,msi-1.0";
            reg = <0xFF200000 0x00000010
                    0xFF200010 0x00000080>;
            reg-names = "csr", "vector_slave";
            interrupt-parent = <&hps_0_arm_gic_0>;
            interrupts = <0 42 4>;
            msi-controller;
            num-vectors = <32>;
    };

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