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1Tegra SOC USB controllers2 3The device node for a USB controller that is part of a Tegra4SOC is as described in the document "Open Firmware Recommended5Practice : Universal Serial Bus" with the following modifications6and additions :7 8Required properties :9 - compatible : For Tegra20, must contain "nvidia,tegra20-ehci".10 For Tegra30, must contain "nvidia,tegra30-ehci". Otherwise, must contain11 "nvidia,<chip>-ehci" plus at least one of the above, where <chip> is12 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 - usb20 21Optional properties:22 - nvidia,needs-double-reset : boolean is to be set for some of the Tegra2023 USB ports, which need reset twice due to hardware issues.24