On 04/22/2016 09:19 AM, Manjunath wrote: > Hello Marek, > > I checked with mainline uboot as well. The issue is now clearer. Here are > some info: > > 1. The board uses SMARC module > 2. Whenever reboot command is given the usb is detected correctly. > 3. When i give a hard reset, the following log is seen. > > U-Boot > usb start > (Re)start USB... > USB0: USB EHCI 1.00 > scanning bus 0 for devices... EHCI timed out on TD - token=0x80008c80 > 1 USB Device(s) found > scanning usb for storage devices... 0 Storage Device(s) found > > 4. Again i boot and do a soft reboot, the same USB is detected. > > This is definitely something related to power. > > > This is something mysterious for me. Anybody has any clue please let me know.
Try setenv usb_pgood_delay 10000 , increases delay after enabling port power. Best regards, Marek Vasut _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot