USB2 otg mode test fail on LX2160ardb Rev2.0 board

[hittzt]

Hi experts,

I looked at the user manual of LSDK 20.04 for otg mode test, and I follow the steps to verify the dwc3 USB2 port otg mode.

But after reboot from new kernel image with configs for Ethernet gadget.

I cannot find usb0 netdevice when I set CONFIG_USB_DWC3_DUAL_ROLE in kernel menuconfig.

And if I set usb to gadget only mode, the outcomes like the followings:

root@nxp-lx2xxx:~# uname -a
Linux nxp-lx2xxx 4.19.90-yocto-standard+ #4 SMP PREEMPT Tue Aug 18 15:04:00 CST 2020 aarch64 aarch64 aarch64 GNU/Linux
root@nxp-lx2xxx:~#
root@nxp-lx2xxx:~#
root@nxp-lx2xxx:~# dmesg | grep usb
[ 2.286687] usbcore: registered new interface driver usbfs
[ 2.290874] usbcore: registered new interface driver hub
[ 2.294916] usbcore: registered new device driver usb
[ 2.875393] iommu: Adding device 3100000.usb to group 4
[ 2.879492] dwc3 3100000.usb: Failed to get clk 'ref': -2
[ 2.883599] dwc3 3100000.usb: Configuration mismatch. dr_mode forced to gadget
[ 2.889829] iommu: Adding device 3110000.usb to group 5
[ 2.893888] dwc3 3110000.usb: Failed to get clk 'ref': -2
[ 2.897995] dwc3 3110000.usb: Configuration mismatch. dr_mode forced to gadget
[ 2.904395] usbcore: registered new interface driver usb-storage
[ 2.915515] usb0: HOST MAC 76:a4:68:d7:dc:e5
[ 2.918494] usb0: MAC ee:c8:14:f2:8a:1e
[ 3.204427] usbcore: registered new interface driver usbhid
[ 3.211446] usbhid: USB HID core driver
[ 4.929559] IPv6: ADDRCONF(NETDEV_UP): usb0: link is not ready
root@nxp-lx2xxx:~#
root@nxp-lx2xxx:~# ip link show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: can0: <NOARP,ECHO> mtu 16 qdisc noop state DOWN mode DEFAULT group default qlen 10
link/can
3: can1: <NOARP,ECHO> mtu 16 qdisc noop state DOWN mode DEFAULT group default qlen 10
link/can
4: usb0: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 1000
link/ether ee:c8:14:f2:8a:1e brd ff:ff:ff:ff:ff:ff
5: sit0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/sit 0.0.0.0 brd 0.0.0.0
6: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000
link/ether 00:04:9f:06:a2:c5 brd ff:ff:ff:ff:ff:ff
7: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000
link/ether 00:04:9f:06:a2:ca brd ff:ff:ff:ff:ff:ff
root@nxp-lx2xxx:~#
root@nxp-lx2xxx:~# lsusb
root@nxp-lx2xxx:~#
root@nxp-lx2xxx:~# ethtool usb0
Settings for usb0:
Link detected: no
root@nxp-lx2xxx:~# dmesg | grep dwc3
[ 2.879492] dwc3 3100000.usb: Failed to get clk 'ref': -2
[ 2.883599] dwc3 3100000.usb: Configuration mismatch. dr_mode forced to gadget
[ 2.893888] dwc3 3110000.usb: Failed to get clk 'ref': -2
[ 2.897995] dwc3 3110000.usb: Configuration mismatch. dr_mode forced to gadget
root@nxp-lx2xxx:~#
root@nxp-lx2xxx:~#
root@nxp-lx2xxx:~#
root@nxp-lx2xxx:~# ifconfig usb0 192.168.2.2 up
IPv6: ADDRCONF(NETDEV_UP): usb0: link is not ready
root@nxp-lx2xxx:~#
root@nxp-lx2xxx:~# dmesg | grep dwc3
[ 2.879492] dwc3 3100000.usb: Failed to get clk 'ref': -2
[ 2.883599] dwc3 3100000.usb: Configuration mismatch. dr_mode forced to gadget
[ 2.893888] dwc3 3110000.usb: Failed to get clk 'ref': -2
[ 2.897995] dwc3 3110000.usb: Configuration mismatch. dr_mode forced to gadget
root@nxp-lx2xxx:~#
root@nxp-lx2xxx:~# ethtool usb0
Settings for usb0:
Link detected: no
root@nxp-lx2xxx:~#
root@nxp-lx2xxx:~#
root@nxp-lx2xxx:~# ip link show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: can0: <NOARP,ECHO> mtu 16 qdisc noop state DOWN mode DEFAULT group default qlen 10
link/can
3: can1: <NOARP,ECHO> mtu 16 qdisc noop state DOWN mode DEFAULT group default qlen 10
link/can
4: usb0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 1000
link/ether ee:c8:14:f2:8a:1e brd ff:ff:ff:ff:ff:ff
5: sit0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/sit 0.0.0.0 brd 0.0.0.0
6: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000
link/ether 00:04:9f:06:a2:c5 brd ff:ff:ff:ff:ff:ff
7: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000
link/ether 00:04:9f:06:a2:ca brd ff:ff:ff:ff:ff:ff
root@nxp-lx2xxx:~#

As the above log shows, the usb0 can not work as normal.

Is there something should be configed?

Looking forward your reply.

Thanks,

Zhantao

[yipingwang]

Hello Zhantao,

Please refer to the following configuration for USB Ethernet gadget.

Please configure Linux Kernel as the following.

USB Gadget support --->

<M> USB Gadget functions configurable through configfs

<M> USB Gadget precomposed configurations

<M> Ethernet Gadget (with CDC Ethernet support) Ethernet gadget support.

Please configure dts file as the following.

usb0: usb3@2f00000 {

          compatible = "snps,dwc3";

          reg = <0x0 0x2f00000 0x0 0x10000>;

          dr_mode = "peripheral";

          interrupts = <0 60 0x4>;

          snps,quirk-frame-length-adjustment = <0x20>;

          snps,dis_rxdet_inp3_quirk;

          maximum-speed = “super-speed”;

           };

Insmod related ko files on RDB board.

# insmod libcomposite.ko

# insmod u_ether.ko

# insmod usb_f_ecm.ko

# insmod usb_f_ecm_subset.ko

# insmod usb_f_rndis.ko

# insmod g_ether.ko 

Thanks,

Yiping