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>
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Stephen Warren

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@@ -11,6 +11,7 @@ Required properties :
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- phy_type : Should be one of "ulpi" or "utmi".
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- nvidia,vbus-gpio : If present, specifies a gpio that needs to be
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activated for the bus to be powered.
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- nvidia,phy : phandle of the PHY instance, the controller is connected to.
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Required properties for phy_type == ulpi:
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- nvidia,phy-reset-gpio : The GPIO used to reset the PHY.
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@@ -0,0 +1,14 @@
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Tegra SOC USB PHY
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The device node for Tegra SOC USB PHY:
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Required properties :
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- compatible : Should be "nvidia,tegra20-usb-phy".
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- reg : Address and length of the register set for the USB PHY interface.
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- phy_type : Should be one of "ulpi" or "utmi".
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Optional properties:
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- nvidia,has-legacy-mode : boolean indicates whether this controller can
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operate in legacy mode (as APX 2500 / 2600). In legacy mode some
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registers are accessed through the APB_MISC base address instead of
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the USB controller.
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