Hello all,
I am unable to detect USB mass storage device ( pen drive)
which is inserted in the davinci board, when board boots up. This board is
flashed with u-boot 1.2.0
In the u-boot1.2.0 source code, in .doc/ README.usb document, it is
mentioned that
"The USB (at least the USB UHCI) needs a frame list (4k), transfer
descriptor and queue headers which are all located in the main memory. The
UHCI allocates every millisecond the PCI bus and reads the current frame
pointer. This may cause to crash the OS during boot. So the USB_MUST_ be
stopped during OS boot. This is the reason, why the USB is NOT automatically
started during start-up. If someone needs the USB he has to start it and
should therefore be aware that he had to stop it before booting the OS."
Also, the configuration parameters to be used are,
CONFIG_CMD_USB enables basic USB support and the usb command
CONFIG_USB_UHCI defines the low level part .A low level part must be
defined if using CONFIG_CMD_USB
CONFIG_USB_KEYBOARD enables the USB Keyboard
CONFIG_USB_STORAGE enables the USB storage devices
I have tried enabling above parameters, but the code was still unable to
detect the usb storage device.
It would be really very helpful, if someone could give me hint to the
solution, as to which files and parameters should I manipulate.
Thanx in advance for the help !!
Regards,
Winy Verma
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