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| author | Arnd Bergmann <arnd@arndb.de> | 2012-03-19 21:57:28 +0100 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-03-19 21:57:28 +0100 |
| commit | f4eb28340771c12cdbf8b5ec149dbd3b0eef1687 (patch) | |
| tree | 71c0860b9271daac24dfa37350ec3f569e2583f2 /Documentation | |
| parent | Merge branch 'spear/dt' into next/dt2 (diff) | |
| parent | arm: tegra: dts: Mark USB1 as an OTG port on Seaboard (diff) | |
| download | linux-f4eb28340771c12cdbf8b5ec149dbd3b0eef1687.tar.xz linux-f4eb28340771c12cdbf8b5ec149dbd3b0eef1687.zip | |
Merge branch 'for-3.4/dt' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/tegra into next/dt2
* 'for-3.4/dt' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/tegra:
arm: tegra: dts: Mark USB1 as an OTG port on Seaboard
arm: tegra: dts: Add legacy mode support to Tegra2x USB1 port
arm: tegra: dts: Support host/device selection and legacy mode
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/usb/tegra-usb.txt | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/tegra-usb.txt b/Documentation/devicetree/bindings/usb/tegra-usb.txt index 035d63d5646d..007005ddbe12 100644 --- a/Documentation/devicetree/bindings/usb/tegra-usb.txt +++ b/Documentation/devicetree/bindings/usb/tegra-usb.txt @@ -11,3 +11,16 @@ 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. Since this is a legacy issue it probably does not + warrant a compatible string of its own. |