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authorVenu Byravarasu <vbyravarasu@nvidia.com>2013-01-16 03:30:19 +0000
committerStephen Warren <swarren@nvidia.com>2013-01-28 11:20:05 -0700
commite374b65c9b15c17685925e45a3f8e97c80a75e5e (patch)
tree5c18eefccc847b2af0ee37e8aa52f4463811d54a /Documentation/devicetree
parent5e18150a7b4139e15e1ed7d7c938dd91f7f12354 (diff)
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ARM: tegra: add DT nodes for Tegra USB PHY
Add DT nodes for Tegra USB PHY along with related documentation. Also added a phandle property to controller DT node, for referring to connected PHY instance. Signed-off-by: Venu Byravarasu <vbyravarasu@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt1
-rw-r--r--Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt14
2 files changed, 15 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt b/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt
index 6ea765ad3dad..34c952883276 100644
--- a/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt
+++ b/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt
@@ -11,6 +11,7 @@ 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.
+ - nvidia,phy : phandle of the PHY instance, the controller is connected to.
Required properties for phy_type == ulpi:
- nvidia,phy-reset-gpio : The GPIO used to reset the PHY.
diff --git a/Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt b/Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt
new file mode 100644
index 000000000000..84a4c12943af
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt
@@ -0,0 +1,14 @@
+Tegra SOC USB PHY
+
+The device node for Tegra SOC USB PHY:
+
+Required properties :
+ - compatible : Should be "nvidia,tegra20-usb-phy".
+ - reg : Address and length of the register set for the USB PHY interface.
+ - phy_type : Should be one of "ulpi" or "utmi".
+
+Optional properties:
+ - 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. \ No newline at end of file