projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 7869fc6e PE |
1 | * Renesas RCar PCIe interface |
| 2 | ||
| 3 | Required properties: | |
| a37b3eaf SH |
4 | compatible: "renesas,pcie-r8a7779" for the R8A7779 SoC; |
| 5 | "renesas,pcie-r8a7790" for the R8A7790 SoC; | |
| 6 | "renesas,pcie-r8a7791" for the R8A7791 SoC; | |
| 0cf1337e | 7 | "renesas,pcie-r8a7793" for the R8A7793 SoC; |
| a37b3eaf | 8 | "renesas,pcie-r8a7795" for the R8A7795 SoC; |
| 8267b075 | 9 | "renesas,pcie-r8a7796" for the R8A7796 SoC; |
| a37b3eaf | 10 | "renesas,pcie-rcar-gen2" for a generic R-Car Gen2 compatible device. |
| 49da2110 | 11 | "renesas,pcie-rcar-gen3" for a generic R-Car Gen3 compatible device. |
| a37b3eaf SH |
12 | |
| 13 | When compatible with the generic version, nodes must list the | |
| 14 | SoC-specific version corresponding to the platform first | |
| 15 | followed by the generic version. | |
| 16 | ||
| 7869fc6e PE |
17 | - reg: base address and length of the pcie controller registers. |
| 18 | - #address-cells: set to <3> | |
| 19 | - #size-cells: set to <2> | |
| 20 | - bus-range: PCI bus numbers covered | |
| 21 | - device_type: set to "pci" | |
| 22 | - ranges: ranges for the PCI memory and I/O regions. | |
| 23 | - dma-ranges: ranges for the inbound memory regions. | |
| 24 | - interrupts: two interrupt sources for MSI interrupts, followed by interrupt | |
| 25 | source for hardware related interrupts (e.g. link speed change). | |
| 26 | - #interrupt-cells: set to <1> | |
| 27 | - interrupt-map-mask and interrupt-map: standard PCI properties | |
| 28 | to define the mapping of the PCIe interface to interrupt | |
| 29 | numbers. | |
| 30 | - clocks: from common clock binding: clock specifiers for the PCIe controller | |
| 31 | and PCIe bus clocks. | |
| 32 | - clock-names: from common clock binding: should be "pcie" and "pcie_bus". | |
| 33 | ||
| 34 | Example: | |
| 35 | ||
| 36 | SoC specific DT Entry: | |
| 37 | ||
| 38 | pcie: pcie@fe000000 { | |
| a37b3eaf | 39 | compatible = "renesas,pcie-r8a7791", "renesas,pcie-rcar-gen2"; |
| 7869fc6e PE |
40 | reg = <0 0xfe000000 0 0x80000>; |
| 41 | #address-cells = <3>; | |
| 42 | #size-cells = <2>; | |
| 43 | bus-range = <0x00 0xff>; | |
| 44 | device_type = "pci"; | |
| 45 | ranges = <0x01000000 0 0x00000000 0 0xfe100000 0 0x00100000 | |
| 46 | 0x02000000 0 0xfe200000 0 0xfe200000 0 0x00200000 | |
| 47 | 0x02000000 0 0x30000000 0 0x30000000 0 0x08000000 | |
| 48 | 0x42000000 0 0x38000000 0 0x38000000 0 0x08000000>; | |
| 49 | dma-ranges = <0x42000000 0 0x40000000 0 0x40000000 0 0x40000000 | |
| 50 | 0x42000000 2 0x00000000 2 0x00000000 0 0x40000000>; | |
| 51 | interrupts = <0 116 4>, <0 117 4>, <0 118 4>; | |
| 52 | #interrupt-cells = <1>; | |
| 53 | interrupt-map-mask = <0 0 0 0>; | |
| 54 | interrupt-map = <0 0 0 0 &gic 0 116 4>; | |
| 55 | clocks = <&mstp3_clks R8A7791_CLK_PCIE>, <&pcie_bus_clk>; | |
| 56 | clock-names = "pcie", "pcie_bus"; | |
| 57 | status = "disabled"; | |
| 58 | }; |