fdt: Add tegra-usb bindings file from linux
authorSimon Glass <sjg@chromium.org>
Mon, 27 Feb 2012 10:52:41 +0000 (10:52 +0000)
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>
Thu, 29 Mar 2012 06:12:48 +0000 (08:12 +0200)
This file is taken from the Linux mailing list.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
doc/device-tree-bindings/usb/tegra-usb.txt [new file with mode: 0644]

diff --git a/doc/device-tree-bindings/usb/tegra-usb.txt b/doc/device-tree-bindings/usb/tegra-usb.txt
new file mode 100644 (file)
index 0000000..035d63d
--- /dev/null
@@ -0,0 +1,13 @@
+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.