--- a/drivers/usb/host/isp116x-hcd.c
+++ b/drivers/usb/host/isp116x-hcd.c
@@ -1531,8 +1531,11 @@ static struct hc_driver isp116x_hc_drive
 	.bus_resume = isp116x_bus_resume,
 };
 
+#define resource_len(r) (((r)->end - (r)->start) + 1)
+
 /*----------------------------------------------------------------*/
 
+#ifdef CONFIG_USB_ISP116X_HCD_PLATFORM
 static int isp116x_remove(struct platform_device *pdev)
 {
 	struct usb_hcd *hcd = platform_get_drvdata(pdev);
@@ -1556,8 +1559,6 @@ static int isp116x_remove(struct platfor
 	return 0;
 }
 
-#define resource_len(r) (((r)->end - (r)->start) + 1)
-
 static int __devinit isp116x_probe(struct platform_device *pdev)
 {
 	struct usb_hcd *hcd;
@@ -1708,22 +1709,253 @@ static struct platform_driver isp116x_dr
 	},
 };
 
+static inline int isp116x_platform_register(void)
+{
+	return platform_driver_register(&isp116x_driver);
+}
+
+static inline void isp116x_platform_unregister(void)
+{
+	platform_driver_unregister(&isp116x_driver);
+}
+#else
+static inline int isp116x_platform_register(void) { return 0; };
+static void isp116x_platform_unregister(void) {};
+#endif /* CONFIG_USB_ISP116X_PLATFORM */
+
+/*-----------------------------------------------------------------*/
+
+#ifdef CONFIG_USB_ISP116X_HCD_OF
+
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+
+#ifdef USE_PLATFORM_DELAY
+static void isp116x_of_delay(struct device *ddev, int delay)
+{
+	ndelay(delay);
+}
+#else
+#define isp116x_of_delay	NULL
+#endif
+
+static int __devinit isp116x_of_probe(struct of_device *op,
+				      const struct of_device_id *match)
+{
+	struct device_node *dn = op->node;
+	struct usb_hcd *hcd;
+	struct isp116x *isp116x;
+	struct resource addr, data, ires;
+	struct isp116x_platform_data *board;
+	void __iomem *addr_reg;
+	void __iomem *data_reg;
+	int irq;
+	int ret = 0;
+	unsigned long irqflags;
+
+	ret = of_address_to_resource(dn, 0, &data);
+	if (ret)
+		return ret;
+
+	ret = of_address_to_resource(dn, 1, &addr);
+	if (ret)
+		return ret;
+
+	ret = of_irq_to_resource(dn, 1, &ires);
+	if (ret)
+		return ret;
+
+	irqflags = ires.flags & IRQF_TRIGGER_MASK;
+
+	board = kzalloc(sizeof(struct isp116x_platform_data), GFP_KERNEL);
+	if (board == NULL)
+		return -ENOMEM;
+
+	if (!request_mem_region(addr.start, resource_len(&addr), hcd_name)) {
+		ret = -EBUSY;
+		goto err_free_board;
+	}
+
+	addr_reg = ioremap_nocache(addr.start, resource_len(&addr));
+	if (addr_reg == NULL) {
+		ret = -ENOMEM;
+		goto err_release_addr;
+	}
+
+	if (!request_mem_region(data.start, resource_len(&data), hcd_name)) {
+		ret = -EBUSY;
+		goto err_unmap_addr;
+	}
+
+	data_reg = ioremap_nocache(data.start, resource_len(&data));
+	if (data_reg == NULL) {
+		ret = -ENOMEM;
+		goto err_release_data;
+	}
+
+	irq = irq_of_parse_and_map(op->node, 0);
+	if (irq == NO_IRQ) {
+		ret = -EINVAL;
+		goto err_unmap_data;
+	}
+
+	/* allocate and initialize hcd */
+	hcd = usb_create_hcd(&isp116x_hc_driver, &op->dev, dev_name(&op->dev));
+	if (!hcd) {
+		ret = -ENOMEM;
+		goto err_irq_dispose;
+	}
+
+	/* this rsrc_start is bogus */
+	hcd->rsrc_start = addr.start;
+	isp116x = hcd_to_isp116x(hcd);
+	isp116x->data_reg = data_reg;
+	isp116x->addr_reg = addr_reg;
+	isp116x->board = board;
+	spin_lock_init(&isp116x->lock);
+	INIT_LIST_HEAD(&isp116x->async);
+
+	board->delay = isp116x_of_delay;
+	if (of_get_property(dn, "sel15Kres", NULL))
+		board->sel15Kres = 1;
+	if (of_get_property(dn, "oc_enable", NULL))
+		board->oc_enable = 1;
+	if (of_get_property(dn, "remote_wakeup_enable", NULL))
+		board->remote_wakeup_enable = 1;
+
+	if (of_get_property(dn, "int_act_high", NULL))
+		board->int_act_high = 1;
+	if (of_get_property(dn, "int_edge_triggered", NULL))
+		board->int_edge_triggered = 1;
+
+	ret = usb_add_hcd(hcd, irq, irqflags | IRQF_DISABLED);
+	if (ret)
+		goto err_put_hcd;
+
+	ret = create_debug_file(isp116x);
+	if (ret) {
+		ERR("Couldn't create debugfs entry\n");
+		goto err_remove_hcd;
+	}
+
+	return 0;
+
+ err_remove_hcd:
+	usb_remove_hcd(hcd);
+ err_put_hcd:
+	usb_put_hcd(hcd);
+ err_irq_dispose:
+	irq_dispose_mapping(irq);
+ err_unmap_data:
+	iounmap(data_reg);
+ err_release_data:
+	release_mem_region(data.start, resource_len(&data));
+ err_unmap_addr:
+	iounmap(addr_reg);
+ err_release_addr:
+	release_mem_region(addr.start, resource_len(&addr));
+ err_free_board:
+	kfree(board);
+	return ret;
+}
+
+static __devexit int isp116x_of_remove(struct of_device *op)
+{
+	struct usb_hcd *hcd = dev_get_drvdata(&op->dev);
+	struct isp116x *isp116x;
+	struct resource res;
+
+	if (!hcd)
+		return 0;
+
+	dev_set_drvdata(&op->dev, NULL);
+
+	isp116x = hcd_to_isp116x(hcd);
+	remove_debug_file(isp116x);
+	usb_remove_hcd(hcd);
+
+	irq_dispose_mapping(hcd->irq);
+
+	iounmap(isp116x->data_reg);
+	(void) of_address_to_resource(op->node, 0, &res);
+	release_mem_region(res.start, resource_len(&res));
+
+	iounmap(isp116x->addr_reg);
+	(void) of_address_to_resource(op->node, 1, &res);
+	release_mem_region(res.start, resource_len(&res));
+
+	kfree(isp116x->board);
+	usb_put_hcd(hcd);
+
+	return 0;
+}
+
+static struct of_device_id isp116x_of_match[] = {
+	{ .compatible = "isp116x-hcd", },
+	{},
+};
+
+static struct of_platform_driver isp116x_of_platform_driver = {
+	.owner		= THIS_MODULE,
+	.name		= "isp116x-hcd-of",
+	.match_table	= isp116x_of_match,
+	.probe		= isp116x_of_probe,
+	.remove		= __devexit_p(isp116x_of_remove),
+	.driver		= {
+		.name	= "isp116x-hcd-of",
+		.owner	= THIS_MODULE,
+	},
+};
+
+static int __init isp116x_of_register(void)
+{
+	return of_register_platform_driver(&isp116x_of_platform_driver);
+}
+
+static void __exit isp116x_of_unregister(void)
+{
+	of_unregister_platform_driver(&isp116x_of_platform_driver);
+}
+
+MODULE_DEVICE_TABLE(of, isp116x_of_match);
+
+#else
+static inline int isp116x_of_register(void) { return 0; };
+static void isp116x_of_unregister(void) {};
+#endif /* CONFIG_USB_ISP116X_HCD_OF */
+
 /*-----------------------------------------------------------------*/
 
 static int __init isp116x_init(void)
 {
+	int ret;
+
 	if (usb_disabled())
 		return -ENODEV;
 
 	INFO("driver %s, %s\n", hcd_name, DRIVER_VERSION);
-	return platform_driver_register(&isp116x_driver);
+	ret = isp116x_platform_register();
+	if (ret)
+		return ret;
+
+	ret = isp116x_of_register();
+	if (ret)
+		goto err_platform_unregister;
+
+	return 0;
+
+ err_platform_unregister:
+	isp116x_platform_unregister();
+	return ret;
 }
 
 module_init(isp116x_init);
 
 static void __exit isp116x_cleanup(void)
 {
-	platform_driver_unregister(&isp116x_driver);
+	isp116x_of_unregister();
+	isp116x_platform_unregister();
 }
 
 module_exit(isp116x_cleanup);
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -144,6 +144,24 @@ config USB_ISP116X_HCD
 	  To compile this driver as a module, choose M here: the
 	  module will be called isp116x-hcd.
 
+config USB_ISP116X_HCD_PLATFORM
+	bool "ISP116X support for controllers on platform bus"
+	depends on USB_ISP116X_HCD
+	default n if PPC_OF
+	default y
+	---help---
+	  Enables support for the ISP116x USB controller present on the
+	  platform bus.
+
+config USB_ISP116X_HCD_OF
+	bool "ISP116X support for controllers on OF platform bus"
+	depends on USB_ISP116X_HCD && PPC_OF
+	default y if PPC_OF
+	default n
+	---help---
+	  Enables support for the ISP116x USB controller present on the
+	  OpenFirmware platform bus.
+
 config USB_ISP1760_HCD
 	tristate "ISP 1760 HCD support"
 	depends on USB && EXPERIMENTAL
