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[karo-tx-linux.git] / Documentation / devicetree / bindings / pci / pci-keystone.txt
1 TI Keystone PCIe interface
2
3 Keystone PCI host Controller is based on Designware PCI h/w version 3.65.
4 It shares common functions with PCIe Designware core driver and inherit
5 common properties defined in
6 Documentation/devicetree/bindings/pci/designware-pci.txt
7
8 Please refer to Documentation/devicetree/bindings/pci/designware-pci.txt
9 for the details of Designware DT bindings.  Additional properties are
10 described here as well as properties that are not applicable.
11
12 Required Properties:-
13
14 compatibility: "ti,keystone-pcie"
15 reg:    index 1 is the base address and length of DW application registers.
16         index 2 is the base address and length of PCI mode configuration
17         register.
18         index 3 is the base address and length of PCI device ID register.
19
20 pcie_msi_intc : Interrupt controller device node for MSI IRQ chip
21         interrupt-cells: should be set to 1
22         interrupt-parent: Parent interrupt controller phandle
23         interrupts: GIC interrupt lines connected to PCI MSI interrupt lines
24
25  Example:
26         pcie_msi_intc: msi-interrupt-controller {
27                         interrupt-controller;
28                         #interrupt-cells = <1>;
29                         interrupt-parent = <&gic>;
30                         interrupts = <GIC_SPI 30 IRQ_TYPE_EDGE_RISING>,
31                                         <GIC_SPI 31 IRQ_TYPE_EDGE_RISING>,
32                                         <GIC_SPI 32 IRQ_TYPE_EDGE_RISING>,
33                                         <GIC_SPI 33 IRQ_TYPE_EDGE_RISING>,
34                                         <GIC_SPI 34 IRQ_TYPE_EDGE_RISING>,
35                                         <GIC_SPI 35 IRQ_TYPE_EDGE_RISING>,
36                                         <GIC_SPI 36 IRQ_TYPE_EDGE_RISING>,
37                                         <GIC_SPI 37 IRQ_TYPE_EDGE_RISING>;
38         };
39
40 pcie_intc: Interrupt controller device node for Legacy IRQ chip
41         interrupt-cells: should be set to 1
42         interrupt-parent: Parent interrupt controller phandle
43         interrupts: GIC interrupt lines connected to PCI Legacy interrupt lines
44
45  Example:
46         pcie_intc: legacy-interrupt-controller {
47                 interrupt-controller;
48                 #interrupt-cells = <1>;
49                 interrupt-parent = <&gic>;
50                 interrupts = <GIC_SPI 26 IRQ_TYPE_EDGE_RISING>,
51                         <GIC_SPI 27 IRQ_TYPE_EDGE_RISING>,
52                         <GIC_SPI 28 IRQ_TYPE_EDGE_RISING>,
53                         <GIC_SPI 29 IRQ_TYPE_EDGE_RISING>;
54         };
55
56 Optional properties:-
57         phys: phandle to Generic Keystone SerDes phy for PCI
58         phy-names: name of the Generic Keystine SerDes phy for PCI
59           - If boot loader already does PCI link establishment, then phys and
60             phy-names shouldn't be present.
61
62 Designware DT Properties not applicable for Keystone PCI
63
64 1. pcie_bus clock-names not used.  Instead, a phandle to phys is used.
65