1f3d549ddSStephen WarrenTegra SOC USB controllers 2f3d549ddSStephen Warren 3f3d549ddSStephen WarrenThe device node for a USB controller that is part of a Tegra 4f3d549ddSStephen WarrenSOC is as described in the document "Open Firmware Recommended 5f3d549ddSStephen WarrenPractice : Universal Serial Bus" with the following modifications 6f3d549ddSStephen Warrenand additions : 7f3d549ddSStephen Warren 8f3d549ddSStephen WarrenRequired properties : 9d400f209SVenu Byravarasu - compatible : Should be "nvidia,tegra20-ehci". 10d400f209SVenu Byravarasu - nvidia,phy : phandle of the PHY that the controller is connected to. 11d400f209SVenu Byravarasu - clocks : Contains a single entry which defines the USB controller's clock. 12f3d549ddSStephen Warren 13f3d549ddSStephen WarrenOptional properties: 14d400f209SVenu Byravarasu - nvidia,needs-double-reset : boolean is to be set for some of the Tegra20 15b4e07478SVenu Byravarasu USB ports, which need reset twice due to hardware issues. 16