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TI Keystone PCIe interface
Keystone PCI host Controller is based on Designware PCI h/w version 3.65.
It shares common functions with PCIe Designware core driver and inherit
common properties defined in
Documentation/devicetree/bindings/pci/designware-pci.txt
Please refer to Documentation/devicetree/bindings/pci/designware-pci.txt
for the details of Designware DT bindings. Additional properties are
described here as well as properties that are not applicable.
Required Properties:-
compatibility: "ti,keystone-pcie"
reg: index 1 is the base address and length of DW application registers.
index 2 is the base address and length of PCI device ID register.
pcie_msi_intc : Interrupt controller device node for MSI IRQ chip
interrupt-cells: should be set to 1
interrupt-parent: Parent interrupt controller phandle
interrupts: GIC interrupt lines connected to PCI MSI interrupt lines
Example:
pcie_msi_intc: msi-interrupt-controller {
interrupt-controller;
#interrupt-cells = <1>;
interrupt-parent = <&gic>;
interrupts = <GIC_SPI 30 IRQ_TYPE_EDGE_RISING>,
<GIC_SPI 31 IRQ_TYPE_EDGE_RISING>,
<GIC_SPI 32 IRQ_TYPE_EDGE_RISING>,
<GIC_SPI 33 IRQ_TYPE_EDGE_RISING>,
<GIC_SPI 34 IRQ_TYPE_EDGE_RISING>,
<GIC_SPI 35 IRQ_TYPE_EDGE_RISING>,
<GIC_SPI 36 IRQ_TYPE_EDGE_RISING>,
<GIC_SPI 37 IRQ_TYPE_EDGE_RISING>;
};
pcie_intc: Interrupt controller device node for Legacy IRQ chip
interrupt-cells: should be set to 1
interrupt-parent: Parent interrupt controller phandle
interrupts: GIC interrupt lines connected to PCI Legacy interrupt lines
Example:
pcie_intc: legacy-interrupt-controller {
interrupt-controller;
#interrupt-cells = <1>;
interrupt-parent = <&gic>;
interrupts = <GIC_SPI 26 IRQ_TYPE_EDGE_RISING>,
<GIC_SPI 27 IRQ_TYPE_EDGE_RISING>,
<GIC_SPI 28 IRQ_TYPE_EDGE_RISING>,
<GIC_SPI 29 IRQ_TYPE_EDGE_RISING>;
};
Optional properties:-
phys: phandle to Generic Keystone SerDes phy for PCI
phy-names: name of the Generic Keystine SerDes phy for PCI
- If boot loader already does PCI link establishment, then phys and
phy-names shouldn't be present.
Designware DT Properties not applicable for Keystone PCI
1. pcie_bus clock-names not used. Instead, a phandle to phys is used.
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