projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1233f59f SS |
1 | * Renesas R-Car generation 2 USB PHY |
| 2 | ||
| 3 | This file provides information on what the device node for the R-Car generation | |
| 4 | 2 USB PHY contains. | |
| 5 | ||
| 6 | Required properties: | |
| 7 | - compatible: "renesas,usb-phy-r8a7790" if the device is a part of R8A7790 SoC. | |
| 8 | "renesas,usb-phy-r8a7791" if the device is a part of R8A7791 SoC. | |
| 9d699bf4 | 9 | "renesas,usb-phy-r8a7794" if the device is a part of R8A7794 SoC. |
| 7777cb8b SH |
10 | "renesas,rcar-gen2-usb-phy" for a generic R-Car Gen2 compatible device. |
| 11 | ||
| 12 | When compatible with the generic version, nodes must list the | |
| 13 | SoC-specific version corresponding to the platform first | |
| 14 | followed by the generic version. | |
| 15 | ||
| 1233f59f SS |
16 | - reg: offset and length of the register block. |
| 17 | - #address-cells: number of address cells for the USB channel subnodes, must | |
| 18 | be <1>. | |
| 19 | - #size-cells: number of size cells for the USB channel subnodes, must be <0>. | |
| 20 | - clocks: clock phandle and specifier pair. | |
| 21 | - clock-names: string, clock input name, must be "usbhs". | |
| 22 | ||
| 23 | The USB PHY device tree node should have the subnodes corresponding to the USB | |
| 24 | channels. These subnodes must contain the following properties: | |
| 25 | - reg: the USB controller selector; see the table below for the values. | |
| 26 | - #phy-cells: see phy-bindings.txt in the same directory, must be <1>. | |
| 27 | ||
| 28 | The phandle's argument in the PHY specifier is the USB controller selector for | |
| 29 | the USB channel; see the selector meanings below: | |
| 30 | ||
| 31 | +-----------+---------------+---------------+ | |
| 32 | |\ Selector | | | | |
| 33 | + --------- + 0 | 1 | | |
| 34 | | Channel \| | | | |
| 35 | +-----------+---------------+---------------+ | |
| 36 | | 0 | PCI EHCI/OHCI | HS-USB | | |
| 37 | | 2 | PCI EHCI/OHCI | xHCI | | |
| 38 | +-----------+---------------+---------------+ | |
| 39 | ||
| 40 | Example (Lager board): | |
| 41 | ||
| 42 | usb-phy@e6590100 { | |
| 7777cb8b | 43 | compatible = "renesas,usb-phy-r8a7790", "renesas,rcar-gen2-usb-phy"; |
| 1233f59f SS |
44 | reg = <0 0xe6590100 0 0x100>; |
| 45 | #address-cells = <1>; | |
| 46 | #size-cells = <0>; | |
| 47 | clocks = <&mstp7_clks R8A7790_CLK_HSUSB>; | |
| 48 | clock-names = "usbhs"; | |
| 49 | ||
| 50 | usb-channel@0 { | |
| 51 | reg = <0>; | |
| 52 | #phy-cells = <1>; | |
| 53 | }; | |
| 54 | usb-channel@2 { | |
| 55 | reg = <2>; | |
| 56 | #phy-cells = <1>; | |
| 57 | }; | |
| 58 | }; |