* Renesas R-Car PCIe interface Required properties: compatible: "renesas,pcie-r8a7743" for the R8A7743 SoC; "renesas,pcie-r8a7779" for the R8A7779 SoC; "renesas,pcie-r8a7790" for the R8A7790 SoC; "renesas,pcie-r8a7791" for the R8A7791 SoC; "renesas,pcie-r8a7793" for the R8A7793 SoC; "renesas,pcie-r8a7795" for the R8A7795 SoC; "renesas,pcie-r8a7796" for the R8A7796 SoC; "renesas,pcie-rcar-gen2" for a generic R-Car Gen2 or RZ/G1 compatible device. "renesas,pcie-rcar-gen3" for a generic R-Car Gen3 compatible device. When compatible with the generic version, nodes must list the SoC-specific version corresponding to the platform first followed by the generic version. - reg: base address and length of the PCIe controller registers. - #address-cells: set to <3> - #size-cells: set to <2> - bus-range: PCI bus numbers covered - device_type: set to "pci" - ranges: ranges for the PCI memory and I/O regions. - dma-ranges: ranges for the inbound memory regions. - interrupts: two interrupt sources for MSI interrupts, followed by interrupt source for hardware related interrupts (e.g. link speed change). - #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. - clocks: from common clock binding: clock specifiers for the PCIe controller and PCIe bus clocks. - clock-names: from common clock binding: should be "pcie" and "pcie_bus". Example: SoC-specific DT Entry: pcie: pcie@fe000000 { compatible = "renesas,pcie-r8a7791", "renesas,pcie-rcar-gen2"; reg = <0 0xfe000000 0 0x80000>; #address-cells = <3>; #size-cells = <2>; bus-range = <0x00 0xff>; device_type = "pci"; ranges = <0x01000000 0 0x00000000 0 0xfe100000 0 0x00100000 0x02000000 0 0xfe200000 0 0xfe200000 0 0x00200000 0x02000000 0 0x30000000 0 0x30000000 0 0x08000000 0x42000000 0 0x38000000 0 0x38000000 0 0x08000000>; dma-ranges = <0x42000000 0 0x40000000 0 0x40000000 0 0x40000000 0x42000000 2 0x00000000 2 0x00000000 0 0x40000000>; interrupts = <0 116 4>, <0 117 4>, <0 118 4>; #interrupt-cells = <1>; interrupt-map-mask = <0 0 0 0>; interrupt-map = <0 0 0 0 &gic 0 116 4>; clocks = <&mstp3_clks R8A7791_CLK_PCIE>, <&pcie_bus_clk>; clock-names = "pcie", "pcie_bus"; };