Kernel-4.18.0-80.el8_fsl,ls-scfg-msi

• Freescale Layerscape SCFG PCIe MSI controller

Required properties:

• compatible: should be “fsl,-msi” to identify

      Layerscape PCIe MSI controller block such as:
          "fsl,ls1021a-msi"
          "fsl,ls1043a-msi"
          "fsl,ls1046a-msi"
          "fsl,ls1043a-v1.1-msi"
          "fsl,ls1012a-msi"
  

• msi-controller: indicates that this is a PCIe MSI controller node
• reg: physical base address of the controller and length of memory mapped.
• interrupts: an interrupt to the parent interrupt controller.

Optional properties:

• interrupt-parent: the phandle to the parent interrupt controller.

This interrupt controller hardware is a second level interrupt controller that
is hooked to a parent interrupt controller: e.g: ARM GIC for ARM-based
platforms. If interrupt-parent is not provided, the default parent interrupt
controller will be used.
Each PCIe node needs to have property msi-parent that points to
MSI controller node

Examples:

msi1: msi-controller@1571000 {
    compatible = "fsl,ls1043a-msi";
    reg = <0x0 0x1571000 0x0 0x8>,
    msi-controller;
    interrupts = <0 116 0x4>;
};