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authorOlof Johansson <olof@lixom.net>2011-11-04 09:12:39 +0000
committerOlof Johansson <olof@lixom.net>2011-12-07 20:47:47 -0800
commitc27317c0ed114152d02b2ed40056f232e5732b9d (patch)
tree8f56d4f70187e4314454c4c9fe9132f581fd2df4 /Documentation
parent317d5330aea392c032a5f8c87df74444fd514910 (diff)
downloadop-kernel-dev-c27317c0ed114152d02b2ed40056f232e5732b9d.zip
op-kernel-dev-c27317c0ed114152d02b2ed40056f232e5732b9d.tar.gz
arm/dt: add basic usb nodes to tegra device trees
For now they are a minimal binding. It needs to be amended with vendor-specific settings for phy setup and link tuning, etc. v2: Added bindings specification and phy_type properties Signed-off-by: Olof Johansson <olof@lixom.net> Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/usb/tegra-usb.txt13
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diff --git a/Documentation/devicetree/bindings/usb/tegra-usb.txt b/Documentation/devicetree/bindings/usb/tegra-usb.txt
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+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 : Should be "nvidia,tegra20-ehci" for USB controllers
+ used in host mode.
+ - 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.
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