Tried to add USB with Device Tree. Didn't work. Memory region and IRQ is the same as with non-DT.

boot.messages.usb.snippets

Boot messages using Device Tree
===============================


Uncompressing Linux... done, booting the kernel.

[    0.000000] Linux version 3.10.12+ (pi@raspi1) (gcc version 4.7.1 20120402 (prerelease) (crosstool-NG 1.15.2) ) #86 Sun Oct 20 14:22:03 CEST 2013

[    0.000000] Machine: BCM2708, model: v31 Raspberry Pi Model B

[    0.182321]    create child: /axi/usb
[    0.182434] of_irq_map_one: dev=/axi/usb, index=0
[    0.182472]  intspec=2 intlen=2
[    0.182505]  intsize=2 intlen=2
[    0.182534] of_irq_map_raw: par=/axi/interrupt-controller,intspec=[0x00000002 0x00000000...],ointsize=2
[    0.182580] of_irq_map_raw: ipar=/axi/interrupt-controller, size=2
[    0.182613]  -> addrsize=1
[    0.182635]  -> got it !
[    0.182659] irq_find_host(c0b93398)
[    0.182686] h: da8b1b40, h->ops->match:   (null)
[    0.182716] irq: irq_create_mapping(0xda8b1b40, 0x20)
[    0.182744] irq: -> using domain @da8b1b40
[    0.182775] irq_domain_legacy_revmap(domain=da8b1b40, hwirq=32): first_hwirq=0, size=330
[    0.182813] irq: -> existing mapping on virq 32
[    0.182841] of_irq_map_one: dev=/axi/usb, index=1
[    0.182869]  intspec=2 intlen=2
[    0.182898]  intsize=2 intlen=2
[    0.182942] of_irq_map_one: dev=/axi/usb, index=0
[    0.182972]  intspec=2 intlen=2
[    0.183000]  intsize=2 intlen=2
[    0.183028] of_irq_map_raw: par=/axi/interrupt-controller,intspec=[0x00000002 0x00000000...],ointsize=2
[    0.183072] of_irq_map_raw: ipar=/axi/interrupt-controller, size=2
[    0.183104]  -> addrsize=1
[    0.183126]  -> got it !
[    0.183149] irq_find_host(c0b93398)
[    0.183174] h: da8b1b40, h->ops->match:   (null)
[    0.183201] irq: irq_create_mapping(0xda8b1b40, 0x20)
[    0.183228] irq: -> using domain @da8b1b40
[    0.183258] irq_domain_legacy_revmap(domain=da8b1b40, hwirq=32): first_hwirq=0, size=330
[    0.183296] irq: -> existing mapping on virq 32

[    3.692740] usbcore: registered new interface driver usbfs
[    3.698813] usbcore: registered new interface driver hub
[    3.704882] usbcore: registered new device driver usb

[    4.473446] pinctrl-bcm2708 20200000.gpio: read 00048024 (6 => gpio_out)

[    5.239076] usbcore: registered new interface driver ax88179_178a
[    5.247421] usbcore: registered new interface driver smsc95xx
[    5.255391] usbcore: registered new interface driver cdc_ncm
[    5.262567] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)
[    5.269868] __request_region(parent=c068ce14, start=0x20980000, n=0x20000, name=dwc_otg, flags=0x0): res=da9ca7c0
[    5.283047] __request_region(parent=c068ce14, start=0x20006000, n=0x1000, name=dwc_otg, flags=0x0): res=da9ca7e0
[    5.496285] Core Release: 2.80a
[    5.500894] Setting default values for core params
[    5.507200] Finished setting default values for core params
[    5.714371] Using Buffer DMA mode
[    5.719202] Periodic Transfer Interrupt Enhancement - disabled
[    5.726589] Multiprocessor Interrupt Enhancement - disabled
[    5.733737] OTG VER PARAM: 0, OTG VER FLAG: 0
[    5.739631] Dedicated Tx FIFOs mode
[    5.745299] dwc_otg: Microframe scheduler enabled
[    5.751856] dwc_otg 20980000.usb: DWC OTG Controller
[    5.758332] dwc_otg 20980000.usb: new USB bus registered, assigned bus number 1
[    5.767218] dwc_otg 20980000.usb: irq 32, io mem 0x00000000
[    5.774292] Init: Port Power? op_state=1
[    5.779589] Init: Power Port (0)
[    5.784318] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    5.792653] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    5.801397] usb usb1: Product: DWC OTG Controller
[    5.807534] usb usb1: Manufacturer: Linux 3.10.12+ dwc_otg_hcd
[    5.814803] usb usb1: SerialNumber: 20980000.usb
[    5.822730] hub 1-0:1.0: USB hub found
[    5.827914] hub 1-0:1.0: 1 port detected
[    5.834099] dwc_otg: FIQ enabled
[    5.838681] dwc_otg: NAK holdoff enabled
[    5.843919] dwc_otg: FIQ split fix enabled
[    5.849260] Module dwc_common_port init
[    5.855302] usbcore: registered new interface driver usb-storage

[    6.087344] Indeed it is in host mode hprt0 = 00021501

[    6.335915] usb 1-1: new high-speed USB device number 2 using dwc_otg

[    6.485177] Indeed it is in host mode hprt0 = 00001101

[    6.615046] usbcore: registered new interface driver usbhid
[    6.622272] usbhid: USB HID core driver

[    6.677214] usb 1-1: device descriptor read/64, error -32

[    6.806050] Indeed it is in host mode hprt0 = 00001101

[    6.991058] usb 1-1: device descriptor read/64, error -32

[    7.101151] Indeed it is in host mode hprt0 = 00001101
[    7.281196] usb 1-1: new high-speed USB device number 3 using dwc_otg
[    7.290143] Indeed it is in host mode hprt0 = 00001101
[    7.471062] usb 1-1: device descriptor read/64, error -32

[    7.581606] Indeed it is in host mode hprt0 = 00001101

[    7.761178] usb 1-1: device descriptor read/64, error -32
[    7.871146] Indeed it is in host mode hprt0 = 00001101
[    8.051092] usb 1-1: new high-speed USB device number 4 using dwc_otg

[    8.481200] usb 1-1: device not accepting address 4, error -32
[    8.488977] Indeed it is in host mode hprt0 = 00001101
[    8.671151] usb 1-1: new high-speed USB device number 5 using dwc_otg

[    9.101194] usb 1-1: device not accepting address 5, error -32
[    9.108944] hub 1-0:1.0: unable to enumerate USB device on port 1



Boot messages non-DT
====================

Uncompressing Linux... done, booting the kernel.

[    0.000000] Linux version 3.10.12+ (pi@raspi1) (gcc version 4.7.1 20120402 (prerelease) (crosstool-NG 1.15.2) ) #85 Sat Oct 19 19:49:42 CEST 2013

[    0.000000] Machine: BCM2708, model: v31 Raspberry Pi Model B

[    3.571956] usbcore: registered new interface driver usbfs
[    3.578092] usbcore: registered new interface driver hub
[    3.584119] usbcore: registered new device driver usb

[    5.105905] usbcore: registered new interface driver ax88179_178a
[    5.114270] usbcore: registered new interface driver smsc95xx
[    5.122234] usbcore: registered new interface driver cdc_ncm
[    5.129343] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)
[    5.136643] __request_region(parent=c068ce14, start=0x20980000, n=0x20000, name=dwc_otg, flags=0x0): res=da9ca7c0
[    5.149828] __request_region(parent=c068ce14, start=0x20006000, n=0x1000, name=dwc_otg, flags=0x0): res=da9ca7e0
[    5.363067] Core Release: 2.80a
[    5.367676] Setting default values for core params
[    5.373980] Finished setting default values for core params
[    5.581193] Using Buffer DMA mode
[    5.586023] Periodic Transfer Interrupt Enhancement - disabled
[    5.593408] Multiprocessor Interrupt Enhancement - disabled
[    5.600552] OTG VER PARAM: 0, OTG VER FLAG: 0
[    5.606445] Dedicated Tx FIFOs mode
[    5.612124] dwc_otg: Microframe scheduler enabled
[    5.618603] dwc_otg bcm2708_usb: DWC OTG Controller
[    5.625098] dwc_otg bcm2708_usb: new USB bus registered, assigned bus number 1
[    5.633907] dwc_otg bcm2708_usb: irq 32, io mem 0x00000000
[    5.640888] Init: Port Power? op_state=1
[    5.646182] Init: Power Port (0)
[    5.650917] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    5.659196] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    5.667922] usb usb1: Product: DWC OTG Controller
[    5.674107] usb usb1: Manufacturer: Linux 3.10.12+ dwc_otg_hcd
[    5.681389] usb usb1: SerialNumber: bcm2708_usb
[    5.689201] hub 1-0:1.0: USB hub found
[    5.694455] hub 1-0:1.0: 1 port detected
[    5.700678] dwc_otg: FIQ enabled
[    5.705261] dwc_otg: NAK holdoff enabled
[    5.710482] dwc_otg: FIQ split fix enabled
[    5.715820] Module dwc_common_port init
[    5.721861] usbcore: registered new interface driver usb-storage

[    6.160286] usb 1-1: new high-speed USB device number 2 using dwc_otg

[    6.399334] hidraw: raw HID events driver (C) Jiri Kosina
[    6.407817] usbcore: registered new interface driver usbhid
[    6.415020] usbhid: USB HID core driver

[    6.526503] usb 1-1: New USB device found, idVendor=0424, idProduct=9514
[    6.534894] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0

[    6.594355] hub 1-1:1.0: USB hub found
[    6.599946] hub 1-1:1.0: 5 ports detected

[    6.910477] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
[    7.031463] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00
[    7.040020] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    7.053963] smsc95xx v1.0.4
[    7.130726] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-bcm2708_usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:39:78:8f

dwc_otg_driver.diff

diff --git a/drivers/usb/host/dwc_otg/dwc_otg_driver.c b/drivers/usb/host/dwc_otg/dwc_otg_driver.c
index 4735f51..87f3290 100644
--- a/drivers/usb/host/dwc_otg/dwc_otg_driver.c
+++ b/drivers/usb/host/dwc_otg/dwc_otg_driver.c
@@ -48,6 +49,7 @@
  * device.
  */

+#include <linux/of_device.h>
 #include "dwc_otg_os_dep.h"
 #include "dwc_os.h"
 #include "dwc_otg_dbg.h"
@@ -1034,6 +1037,14 @@ static struct pci_driver dwc_otg_driver = {
                   },
 };
 #elif defined(PLATFORM_INTERFACE)
+static const struct of_device_id dwc_otg_match[] = {
+       {
+               .compatible = "snps,dwc",
+       },
+       {}
+};
+MODULE_DEVICE_TABLE(of, dwc_otg_match);
+
 static struct platform_device_id platform_ids[] = {
         {
               .name = "bcm2708_usb",
@@ -1046,6 +1057,7 @@ MODULE_DEVICE_TABLE(platform, platform_ids);
 static struct platform_driver dwc_otg_driver = {
        .driver = {
                .name = (char *)dwc_driver_name,
+               .of_match_table = dwc_otg_match,
                },
         .id_table = platform_ids,

usb.dts

		usb {
			compatible = "brcm,bcm2835-usb", "snps,dwc";
			reg = <0x7e980000 0x20000>, <0x7e006000 0x1000>;
			interrupts = <2 0>;
		};