usb: ehci ppc device-tree-aware driver

diff -ruN linux-2.6.orig/drivers/usb/host/Kconfig linux-2.6/drivers/usb/host/Kconfig
@@ -84,6 +84,14 @@
 	---help---
 	  Variation of ARC USB block used in some Freescale chips.
 
+config USB_EHCI_HCD_PPC_OF
+	bool "EHCI support for PPC USB controller on OF platform bus"
+	depends on USB_EHCI_HCD && PPC_OF
+	default y
+	---help---
+	  Enables support for the USB controller PowerPC present on the
+	  OpenFirmware platform bus.
+
 config USB_ISP116X_HCD
 	tristate "ISP116X HCD support"
 	depends on USB

diff -ruN linux-2.6.orig/Documentation/powerpc/booting-without-of.txt linux-2.6/Documentation/powerpc/booting-without-of.txt
@@ -52,6 +52,7 @@
       i) Freescale QUICC Engine module (QE)
       j) CFI or JEDEC memory-mapped NOR flash
       k) Global Utilities Block
+      l) USB EHCI controllers
 
   VII - Specifying interrupt information for devices
     1) interrupts property

@@ -1848,6 +1849,33 @@
 		fsl,has-rstcr;
 	};
 
+  l) USB EHCI controllers
+
+  Required properties:
+  - compatible : should be "usb-ehci".
+  - reg : should contain at least address and length of the standard EHCI
+    register set for the device. Optional platform-dependent registers
+    (debug-port or other) can be also specified here, but only after
+    definition of standard EHCI registers.
+  - interrupts : one EHCI interrupt should be described here.
+  If device registers are implemented in big endian mode, the device
+  node should have "big-endian-regs" property.
+  If controller implementation operates with big endian descriptors,
+  "big-endian-desc" property should be specified.
+  If both big endian registers and descriptors are used by the controller
+  implementation, "big-endian" property can be specified instead of having
+  both "big-endian-regs" and "big-endian-desc".
+
+   Example (Sequoia 440EPx):
+	ehci@e0000300 {
+		compatible = "ibm,usb-ehci-440epx", "usb-ehci";
+		interrupt-parent = <&UIC0>;
+		interrupts = <1a 4>;
+		reg = <0 e0000300 90 0 e0000390 70>;
+		big-endian;
+	};
+
+
    More devices will be defined as this spec matures.
 
 VII - Specifying interrupt information for devices

diff -ruN linux-2.6.orig/arch/powerpc/boot/dts/sequoia.dts linux-2.6/arch/powerpc/boot/dts/sequoia.dts
@@ -122,6 +122,14 @@
 			interrupt-map-mask = <ffffffff>;
 		};
 
+		USB0: ehci@e0000300 {
+			compatible = "ibm,usb-ehci-440epx", "usb-ehci";
+			interrupt-parent = <&UIC0>;
+			interrupts = <1a 4>;
+			reg = <0 e0000300 90 0 e0000390 70>;
+			big-endian;
+		};
+
 		POB0: opb {
 		  	compatible = "ibm,opb-440epx", "ibm,opb";
 			#address-cells = <1>;