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 : For Tegra20, must contain "nvidia,tegra20-ehci". 10 For Tegra30, must contain "nvidia,tegra30-ehci". Otherwise, must contain 11 "nvidia,<chip>-ehci" plus at least one of the above, where <chip> is 12 tegra114, tegra124, tegra132, or tegra210. 13 - nvidia,phy : phandle of the PHY that the controller is connected to. 14 - clocks : Must contain one entry, for the module clock. 15 See ../clocks/clock-bindings.txt for details. 16 - resets : Must contain an entry for each entry in reset-names. 17 See ../reset/reset.txt for details. 18 - reset-names : Must include the following entries: 19 - usb 20 21Optional properties: 22 - nvidia,needs-double-reset : boolean is to be set for some of the Tegra20 23 USB ports, which need reset twice due to hardware issues. 24