diff options
Diffstat (limited to 'kernel/Documentation/devicetree/bindings/pci/designware-pcie.txt')
| -rw-r--r-- | kernel/Documentation/devicetree/bindings/pci/designware-pcie.txt | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/kernel/Documentation/devicetree/bindings/pci/designware-pcie.txt b/kernel/Documentation/devicetree/bindings/pci/designware-pcie.txt new file mode 100644 index 000000000..9f4faa8e8 --- /dev/null +++ b/kernel/Documentation/devicetree/bindings/pci/designware-pcie.txt @@ -0,0 +1,28 @@ +* Synopsys Designware PCIe interface + +Required properties: +- compatible: should contain "snps,dw-pcie" to identify the core. +- reg: Should contain the configuration address space. +- reg-names: Must be "config" for the PCIe configuration space. + (The old way of getting the configuration address space from "ranges" + is deprecated and should be avoided.) +- #address-cells: set to <3> +- #size-cells: set to <2> +- device_type: set to "pci" +- ranges: ranges for the PCI memory and I/O regions +- #interrupt-cells: set to <1> +- interrupt-map-mask and interrupt-map: standard PCI properties + to define the mapping of the PCIe interface to interrupt + numbers. +- num-lanes: number of lanes to use +- clocks: Must contain an entry for each entry in clock-names. + See ../clocks/clock-bindings.txt for details. +- clock-names: Must include the following entries: + - "pcie" + - "pcie_bus" + +Optional properties: +- reset-gpio: gpio pin number of power good signal +- bus-range: PCI bus numbers covered (it is recommended for new devicetrees to + specify this property, to keep backwards compatibility a range of 0x00-0xff + is assumed if not present) |