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1ST USB EHCI controller2 3Required properties:4 - compatible : must be "st,st-ehci-300x"5 - reg : physical base addresses of the controller and length of memory mapped6 region7 - interrupts : one EHCI interrupt should be described here8 - pinctrl-names : a pinctrl state named "default" must be defined9 - pinctrl-0 : phandle referencing pin configuration of the USB controller10See: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt11 - clocks : phandle list of usb clocks12 - clock-names : should be "ic" for interconnect clock and "clk48"13See: Documentation/devicetree/bindings/clock/clock-bindings.txt14 15 - phys : phandle for the PHY device16 - phy-names : should be "usb"17 - resets : phandle + reset specifier pairs to the powerdown and softreset lines18 of the USB IP19 - reset-names : should be "power" and "softreset"20See: Documentation/devicetree/bindings/reset/st,stih407-powerdown.yaml21See: Documentation/devicetree/bindings/reset/reset.txt22 23Example:24 25 ehci1: usb@fe203e00 {26 compatible = "st,st-ehci-300x";27 reg = <0xfe203e00 0x100>;28 interrupts = <GIC_SPI 148 IRQ_TYPE_NONE>;29 pinctrl-names = "default";30 pinctrl-0 = <&pinctrl_usb1>;31 clocks = <&clk_s_a1_ls 0>;32 phys = <&usb2_phy>;33 phy-names = "usb";34 35 resets = <&powerdown STIH416_USB1_POWERDOWN>,36 <&softreset STIH416_USB1_SOFTRESET>;37 reset-names = "power", "softreset";38 };39