RNDIS class device USB connectivity issue on imx28evk board.

pradeeparora — Fri, 20 Mar 2015 16:51:34 GMT

Hi,

I'm trying to connect a Lantronix xPico WiFi based board via USB to the imx28evk board. The peripheral board has been configured to present itself as an RNDIS class device.

When I hook this up to my host machine running Ubuntu 14.04, the connection is successful. dmesg output is as follows:

> [16134.647582] usb 3-1.5.4: new full-speed USB device number 13 using xhci_hcd

> [16134.753271] usb 3-1.5.4: New USB device found, idVendor=0525, idProduct=a4a2

> [16134.753275] usb 3-1.5.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3

> [16134.753277] usb 3-1.5.4: Product: Gadget RNDIS v2.4

> [16134.753279] usb 3-1.5.4: Manufacturer: ELMO GMAS

> [16134.753281] usb 3-1.5.4: SerialNumber: 123

When I connect the device to the imx28evk board (running kernel version 3.18.5-fslc built using the Yocto environment), dmesg yields the following:

[ 60.035311] usb 1-1: new full-speed USB device number 2 using ci_hdrc

[ 75.155258] usb 1-1: device descriptor read/64, error -110

[ 75.461265] cdc_subset: probe of 1-1:1.0 failed with error -22

I suspect this to be a kernel configuration related issue. A couple of other pieces of information from the imx28evk target:

1. CONFIG_USB_ETH_RNDIS has been enabled

2. lsusb does recognize the device:

Bus 001 Device 002: ID 0525:a4a2 Netchip Technology, Inc. Linux-USB Ethernet/RNDIS Gadget

Any assistance in resolving this issue would be greatly appreciated.

Regards,

Pradeep.

Re: RNDIS class device USB connectivity issue on imx28evk board.

CarlosCasillas — Mon, 30 Mar 2015 22:44:18 GMT

Hi Pradeep,

In this case, an option could be contacting to the manufacturer of the Wi-Fi card in order to ask them if they have a specific Linux driver.

Hope this information will be useful for you.

Best regards!

/Carlos

topic Re: RNDIS class device USB connectivity issue on imx28evk board. in i.MX Processors

RNDIS class device USB connectivity issue on imx28evk board.

Re: RNDIS class device USB connectivity issue on imx28evk board.