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tegra: fdt: Add additional USB binding

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This adds a property to indicate a port which can switch between host and device
mode.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
This commit is contained in:
Simon Glass 2012-02-28 08:07:47 +00:00 committed by Albert ARIBAUD
parent b257464b1c
commit 8b7a47d73d
1 changed files with 12 additions and 0 deletions
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12
doc/device-tree-bindings/usb/tegra-usb.txt
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@ -11,3 +11,15 @@ Required properties :
- phy_type : Should be one of "ulpi" or "utmi". - phy_type : Should be one of "ulpi" or "utmi".
- nvidia,vbus-gpio : If present, specifies a gpio that needs to be - nvidia,vbus-gpio : If present, specifies a gpio that needs to be
activated for the bus to be powered. 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.