1Tegra SOC USB controllers 2 3The device node for a USB controller that is part of a Tegra 4SOC is as described in the document "Open Firmware Recommended 5Practice : Universal Serial Bus" with the following modifications 6and additions : 7 8Required properties : 9 - compatible : Should be "nvidia,tegra20-ehci". 10 - nvidia,phy : phandle of the PHY that the controller is connected to. 11 - clocks : Contains a single entry which defines the USB controller's clock. 12 13Optional properties: 14 - nvidia,needs-double-reset : boolean is to be set for some of the Tegra20 15 USB ports, which need reset twice due to hardware issues. 16