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| author | Simon Glass <sjg@chromium.org> | 2012-02-28 08:07:47 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-03-29 08:12:48 +0200 |
| commit | 8b7a47d73d26e562918021bf4027adcb660a1146 (patch) | |
| tree | 2e7aa151298309ef8b35ec45245539685c56fd67 /doc | |
| parent | b257464b1c7522d04650d8e2ab52ee7c1cafa7e4 (diff) | |
| download | u-boot-imx-8b7a47d73d26e562918021bf4027adcb660a1146.zip u-boot-imx-8b7a47d73d26e562918021bf4027adcb660a1146.tar.gz u-boot-imx-8b7a47d73d26e562918021bf4027adcb660a1146.tar.bz2 | |
tegra: fdt: Add additional USB binding
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>
Diffstat (limited to 'doc')
| -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. |