1* Mobiveil AXI PCIe Root Port Bridge DT description
2
3Mobiveil's GPEX 4.0 is a PCIe Gen4 root port bridge IP. This configurable IP
4has up to 8 outbound and inbound windows for the address translation.
5
6Required properties:
7- #address-cells: Address representation for root ports, set to <3>
8- #size-cells: Size representation for root ports, set to <2>
9- #interrupt-cells: specifies the number of cells needed to encode an
10	interrupt source. The value must be 1.
11- compatible: Should contain "mbvl,gpex40-pcie"
12- reg: Should contain PCIe registers location and length
13	"config_axi_slave": PCIe controller registers
14	"csr_axi_slave"	  : Bridge config registers
15	"gpio_slave"	  : GPIO registers to control slot power
16	"apb_csr"	  : MSI registers
17
18- device_type: must be "pci"
19- apio-wins : number of requested apio outbound windows
20		default 2 outbound windows are configured -
21		1. Config window
22		2. Memory window
23- ppio-wins : number of requested ppio inbound windows
24		default 1 inbound memory window is configured.
25- bus-range: PCI bus numbers covered
26- interrupt-controller: identifies the node as an interrupt controller
27- #interrupt-cells: specifies the number of cells needed to encode an
28	interrupt source. The value must be 1.
29- interrupts: The interrupt line of the PCIe controller
30		last cell of this field is set to 4 to
31		denote it as IRQ_TYPE_LEVEL_HIGH type interrupt.
32- interrupt-map-mask,
33	interrupt-map: standard PCI properties to define the mapping of the
34	PCI interface to interrupt numbers.
35- ranges: ranges for the PCI memory regions (I/O space region is not
36	supported by hardware)
37	Please refer to the standard PCI bus binding document for a more
38	detailed explanation
39
40
41Example:
42++++++++
43	pcie0: pcie@a0000000 {
44		#address-cells = <3>;
45		#size-cells = <2>;
46		compatible = "mbvl,gpex40-pcie";
47		reg =	<0xa0000000 0x00001000>,
48			<0xb0000000 0x00010000>,
49			<0xff000000 0x00200000>,
50			<0xb0010000 0x00001000>;
51		reg-names =	"config_axi_slave",
52				"csr_axi_slave",
53				"gpio_slave",
54				"apb_csr";
55		device_type = "pci";
56		apio-wins = <2>;
57		ppio-wins = <1>;
58		bus-range = <0x00000000 0x000000ff>;
59		interrupt-controller;
60		interrupt-parent = <&gic>;
61		#interrupt-cells = <1>;
62		interrupts = < 0 89 4 >;
63		interrupt-map-mask = <0 0 0 7>;
64		interrupt-map = <0 0 0 0 &pci_express 0>,
65				<0 0 0 1 &pci_express 1>,
66				<0 0 0 2 &pci_express 2>,
67				<0 0 0 3 &pci_express 3>;
68		ranges = < 0x83000000 0 0x00000000 0xa8000000 0 0x8000000>;
69
70	};
71