using petalinux configure zedboard，but usb-otg can not work

Question

I made a project using VIVADO 2014.4, based on ZedBoard CTT, Vivado 2014.2. Then I created the boot and image using petalinux. With SD boot, it started ok, but the usb-otg interface not worked, by plug in a u-disk. Is there something wrong. Who can give me some advice?

Thanks.

Former Member · Accepted Answer

Everyone interested in USB-OTG:

Modifications made to the PetaLinux 2015.4 tools and driver set have resolved issues on Zynq boards around the USB-OTG functionality. In the default kernel configuration, there are no longer any changes required to activity USB-OTG, and the requirement for adding a special application for activating USB power has been eliminated. This is good news.

The only addition required for USB-OTG operation in PetaLinux on Avnet Zynq boards is to update the device tree (system-top.dts) file to add the following entry:

/{

usb_phy0:phy0 {

compatible="ulpi-phy";

#phy-cells = <0>;

reg = <0xe0002000 0x1000>;

view-port=<0x170>;

drv-vbus;

};

&usb0 {

status = "okay";

dr_mode = "host";

usb-phy = <&usb_phy0>;

} ;

Ron