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authorSimon Glass <sjg@chromium.org>2012-02-27 10:52:41 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-03-29 08:12:48 +0200
commitb257464b1c7522d04650d8e2ab52ee7c1cafa7e4 (patch)
tree0de0ecae6981c9cbf726268bcdc212ea33553eb6 /doc/device-tree-bindings/usb
parent849df712a061df4b589b95e2a9646c3458feb995 (diff)
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fdt: Add tegra-usb bindings file from linux
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>
Diffstat (limited to 'doc/device-tree-bindings/usb')
-rw-r--r--doc/device-tree-bindings/usb/tegra-usb.txt13
1 files changed, 13 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/usb/tegra-usb.txt b/doc/device-tree-bindings/usb/tegra-usb.txt
new file mode 100644
index 0000000..035d63d
--- /dev/null
+++ b/doc/device-tree-bindings/usb/tegra-usb.txt
@@ -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.