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Diffstat (limited to 'Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt b/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt new file mode 100644 index 000000000..f60785f73 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt @@ -0,0 +1,23 @@ +Tegra SOC USB controllers + +The device node for a USB controller that is part of a Tegra +SOC is as described in the document "Open Firmware Recommended +Practice : Universal Serial Bus" with the following modifications +and additions : + +Required properties : + - compatible : For Tegra20, must contain "nvidia,tegra20-ehci". + For Tegra30, must contain "nvidia,tegra30-ehci". Otherwise, must contain + "nvidia,<chip>-ehci" plus at least one of the above, where <chip> is + tegra114, tegra124, tegra132, or tegra210. + - nvidia,phy : phandle of the PHY that the controller is connected to. + - clocks : Must contain one entry, for the module clock. + See ../clocks/clock-bindings.txt for details. + - resets : Must contain an entry for each entry in reset-names. + See ../reset/reset.txt for details. + - reset-names : Must include the following entries: + - usb + +Optional properties: + - nvidia,needs-double-reset : boolean is to be set for some of the Tegra20 + USB ports, which need reset twice due to hardware issues. |