[meta-xilinx] zedboard usb

gmane at reliableembeddedsystems.com gmane at reliableembeddedsystems.com
Thu Jan 28 14:29:57 PST 2016


Hi,

I currently have a 4.4 mainline kernel with a multi-v7 config plus a 
slightly patched u-boot 2016.01 running on my zedboard.

I'm trying to connect some camera to the USB(OTG) port (via an adapter) 
which did not succeed so far;)

What I managed to do is to connect a USB stick, in u-boot I do

usb start

and the info regarding the mass storage USB device and so on is passed 
to the Linux kernel, where it is visible then:

root at multi-v7-ml:/sys/bus/usb# lsusb
Bus 001 Device 002: ID 0951:1643 Kingston Technology DataTraveler G3
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
root at multi-v7-ml:/sys/bus/usb#

Is it this really necessary to get u-boot involved?

I mean can I skip "usb start" in u-boot and do something magical in the 
kernel to turn on usb (since I don't need my USB device in u-boot, but 
later when Linux runs)?

Regards,

Robert



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