diff options
| -rw-r--r-- | doc/device-tree-bindings/usb/tegra-usb.txt | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/usb/tegra-usb.txt b/doc/device-tree-bindings/usb/tegra-usb.txt index 035d63d..5282d44 100644 --- a/doc/device-tree-bindings/usb/tegra-usb.txt +++ b/doc/device-tree-bindings/usb/tegra-usb.txt @@ -11,3 +11,15 @@ Required properties : - phy_type : Should be one of "ulpi" or "utmi". - nvidia,vbus-gpio : If present, specifies a gpio that needs to be activated for the bus to be powered. + +Optional properties: + - dr_mode : dual role mode. Indicates the working mode for + nvidia,tegra20-ehci compatible controllers. Can be "host", "peripheral", + or "otg". Default to "host" if not defined for backward compatibility. + host means this is a host controller + peripheral means it is device controller + otg means it can operate as either ("on the go") + - nvidia,has-legacy-mode : boolean indicates whether this controller can + operate in legacy mode (as APX 2500 / 2600). In legacy mode some + registers are accessed through the APB_MISC base address instead of + the USB controller. |