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>;
};