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| -rw-r--r-- | Documentation/devicetree/bindings/pci/altera-pcie.txt | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pci/altera-pcie.txt b/Documentation/devicetree/bindings/pci/altera-pcie.txt new file mode 100644 index 000000000..816b244a2 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/altera-pcie.txt @@ -0,0 +1,50 @@ +* Altera PCIe controller + +Required properties: +- compatible : should contain "altr,pcie-root-port-1.0" or "altr,pcie-root-port-2.0" +- reg: a list of physical base address and length for TXS and CRA. + For "altr,pcie-root-port-2.0", additional HIP base address and length. +- reg-names: must include the following entries: + "Txs": TX slave port region + "Cra": Control register access region + "Hip": Hard IP region (if "altr,pcie-root-port-2.0") +- interrupts: specifies the interrupt source of the parent interrupt + controller. The format of the interrupt specifier depends + on the parent interrupt controller. +- device_type: must be "pci" +- #address-cells: set to <3> +- #size-cells: set to <2> +- #interrupt-cells: set to <1> +- ranges: describes the translation of addresses for root ports and + standard PCI regions. +- interrupt-map-mask and interrupt-map: standard PCI properties to define the + mapping of the PCIe interface to interrupt numbers. + +Optional properties: +- msi-parent: Link to the hardware entity that serves as the MSI controller + for this PCIe controller. +- bus-range: PCI bus numbers covered + +Example + pcie_0: pcie@c00000000 { + compatible = "altr,pcie-root-port-1.0"; + reg = <0xc0000000 0x20000000>, + <0xff220000 0x00004000>; + reg-names = "Txs", "Cra"; + interrupt-parent = <&hps_0_arm_gic_0>; + interrupts = <0 40 4>; + interrupt-controller; + #interrupt-cells = <1>; + bus-range = <0x0 0xFF>; + device_type = "pci"; + msi-parent = <&msi_to_gic_gen_0>; + #address-cells = <3>; + #size-cells = <2>; + interrupt-map-mask = <0 0 0 7>; + interrupt-map = <0 0 0 1 &pcie_0 1>, + <0 0 0 2 &pcie_0 2>, + <0 0 0 3 &pcie_0 3>, + <0 0 0 4 &pcie_0 4>; + ranges = <0x82000000 0x00000000 0x00000000 0xc0000000 0x00000000 0x10000000 + 0x82000000 0x00000000 0x10000000 0xd0000000 0x00000000 0x10000000>; + }; |