Hi Manukumar,
On Mon, 09 Jul 2012 14:17:49 +0530, Manukumar manukumar@signal-networks.com wrote:
hello I checked with the hardware spec in that P1020RDB: having connection like P1012processor -> PHY -> HUB -> ports
whereas in custom board P1012processor -> phy -> port(single usb port)
In uboot source code initializing sequence of u-boot is below: 1.usb_init() 2.usb_scan_devices() 3.usb_new_device(dev) 4.usb_hub_probe(dev, 0) 5.usb_hub_configure(dev)
how can we do this in u-boot source code
I am not a USB specialist, but it seems like it is the first time ever that U-Boot meets a board where the core's USB port is mapped directly to a device without passing through a hub. Is this design compliant with the USB standards?
Anyway, you seem to have nailed the (USB) root cause, so the course of action is obvious even if its compliance with standards is not: you need to make usb hub probing and configuration optional and enabled by default, and to disable this option for your custom board.
manukumar signal-networks
Amicalement,