Failed to enumerate any USB device through OTG in ALtera Cyclone5 SoC board

Hi,

I am working on Altera Cyclone5 SoC board with Linux Kernel "Linux cyclone5 4.1.17-ltsi-altera". I want to enumerate USB device through OTG Interface.

I have checked and updated respective Altera Cyclone5 DTS file to add support of USB as OTG.

--- Quote Start ---

usb1: usb@ffb40000 {

/*compatible = "snps,dwc2";*/

compatible = "snps,dwc-otg-15.1", "snps,dwc-otg", "snps,dwc2";

/* reg = <0xffb40000 0xffff>; */

reg = <0xffb40000 0x00040000>;

interrupts = <0 128 4>;

clocks = <&usb_mp_clk>;

clock-names = "otg";

dev-nperio-tx-fifo-size = <4096>; /* embeddedsw.dts.params.dev-nperio-tx-fifo-size type NUMBER */

dev-perio-tx-fifo-size = "<512 512 512 512 512 512 512 512 512 512 512 512 512 512 512>"; /* embeddedsw.dts.params.dev-perio-tx-fifo-size type STRING */

dev-rx-fifo-size = <512>; /* embeddedsw.dts.params.dev-rx-fifo-size type NUMBER */

dev-tx-fifo-size = "<512 512 512 512 512 512 512 512 512 512 512 512 512 512 512>"; /* embeddedsw.dts.params.dev-tx-fifo-size type STRING */

dma-mask = <268435455>; /* embeddedsw.dts.params.dma-mask type NUMBER */

enable-dynamic-fifo = <1>; /* embeddedsw.dts.params.enable-dynamic-fifo type NUMBER */

host-nperio-tx-fifo-size = <2560>; /* embeddedsw.dts.params.host-nperio-tx-fifo-size type NUMBER */

host-perio-tx-fifo-size = <2560>; /* embeddedsw.dts.params.host-perio-tx-fifo-size type NUMBER */

/* host-rx-fifo-size = <2560>; embeddedsw.dts.params.host-rx-fifo-size type NUMBER */

host-rx-fifo-size = <512>; /* embeddedsw.dts.params.host-rx-fifo-size type NUMBER */

phys = <&usbphy0>;

phy-names = "usb2-phy";

ulpi-ddr = <0>; /* embeddedsw.dts.params.ulpi-ddr type NUMBER */

voltage-switch = <0>; /* embeddedsw.dts.params.voltage-switch type NUMBER */

status = "disabled";

};

--- Quote End ---

Followig are some kernel logs regarding USB device and OTG Controller Support

--- Quote Start ---

root@cyclone5:~# dmesg | grep usb

[ 0.203225] usbcore: registered new interface driver usbfs

[ 0.203285] usbcore: registered new interface driver hub

[ 0.203344] usbcore: registered new device driver usb

[ 0.203477] soc:usbphy@0 supply vcc not found, using dummy regulator

[ 1.014284] ffb40000.usb supply vusb_d not found, using dummy regulator

[ 1.020924] ffb40000.usb supply vusb_a not found, using dummy regulator

[ 1.061106] dwc2 ffb40000.usb: EPs: 16, dedicated fifos, 8064 entries in SPRAM

[ 1.921191] dwc2 ffb40000.usb: DWC OTG Controller

[ 1.925900] dwc2 ffb40000.usb: new USB bus registered, assigned bus number 1

[ 1.932957] dwc2 ffb40000.usb: irq 47, io mem 0x00000000

[ 1.938396] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002

[ 1.945168] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1

[ 1.952367] usb usb1: Product: DWC OTG Controller

[ 1.957050] usb usb1: Manufacturer: Linux 4.1.17-ltsi-altera dwc2_hsotg

[ 1.963643] usb usb1: SerialNumber: ffb40000.usb

[ 1.987992] usbcore: registered new interface driver usb-storage

[ 2.103199] usbcore: registered new interface driver usbhid

[ 2.108747] usbhid: USB HID core driver

root@cyclone5:~# dmesg | grep otg

[ 1.957050] usb usb1: Manufacturer: Linux 4.1.17-ltsi-altera dwc2_hsotg

--- Quote End ---

I am not able to enumerate any USB device through OTG cable. I am not getting interrupt after connecting or disconnecting any USB device.

So, is there any kernel configuration or device tree configuration missing to work OTG support on this board?

Please let me know if anyone has any idea ro clue to solve this issue.

Regards,

Ritesh Prajapati