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Diffstat (limited to 'Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt')
-rw-r--r-- | Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt b/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt new file mode 100644 index 000000000..fb4a204da --- /dev/null +++ b/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt @@ -0,0 +1,48 @@ +* Renesas R-Car generation 3 USB 2.0 PHY + +This file provides information on what the device node for the R-Car generation +3 USB 2.0 PHY contains. + +Required properties: +- compatible: "renesas,usb2-phy-r8a7795" if the device is a part of an R8A7795 + SoC. + "renesas,usb2-phy-r8a7796" if the device is a part of an R8A7796 + SoC. + "renesas,usb2-phy-r8a77965" if the device is a part of an + R8A77965 SoC. + "renesas,usb2-phy-r8a77990" if the device is a part of an + R8A77990 SoC. + "renesas,usb2-phy-r8a77995" if the device is a part of an + R8A77995 SoC. + "renesas,rcar-gen3-usb2-phy" 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: offset and length of the partial USB 2.0 Host register block. +- clocks: clock phandle and specifier pair(s). +- #phy-cells: see phy-bindings.txt in the same directory, must be <0>. + +Optional properties: +To use a USB channel where USB 2.0 Host and HSUSB (USB 2.0 Peripheral) are +combined, the device tree node should set interrupt properties to use the +channel as USB OTG: +- interrupts: interrupt specifier for the PHY. +- vbus-supply: Phandle to a regulator that provides power to the VBUS. This + regulator will be managed during the PHY power on/off sequence. + +Example (R-Car H3): + + usb-phy@ee080200 { + compatible = "renesas,usb2-phy-r8a7795", "renesas,rcar-gen3-usb2-phy"; + reg = <0 0xee080200 0 0x700>; + interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&cpg CPG_MOD 703>; + }; + + usb-phy@ee0a0200 { + compatible = "renesas,usb2-phy-r8a7795", "renesas,rcar-gen3-usb2-phy"; + reg = <0 0xee0a0200 0 0x700>; + clocks = <&cpg CPG_MOD 702>; + }; |