Kernel-4.18.0-80.el8_altera-pcie-msi

• 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
  

• interrupt-parent: interrupt source phandle.
• 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>;
};