USB Ehci port is not detecting

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1

I have beagleboard Rev C4...
m booting with all latest files downloaded from
http://www.angstrom-distribution.org/demo/beagleboard/
but my USB EHCI port is not working...

m giving power to board through usb-OTG and i am using hub which is
externally powered.

In boot partition
1) MLO_rev_v3 (copied as MLO)
2) u-boot_rev_v3.bin ( copied as u-boot.bin)
3) uImage_rev_v3.bin (copied as uImage.bin)

In other partition
1) Angstrom-Beagleboard-demo-image-glibc-ipk-2009.X-test-20090104-
beagleboard.rootfs.tar.bz2
2) modules-2.6.29-r47-beagleboard.tgz

when i try to access my usb drive it showing message
"can't open '/dev/sda': No such file or directory"

Does it is necessary to provide power to beagleboard with power
adapter while connecting peripherals to beagleboard?

Plz help...

2

Powering the board via OTG should provide enough power for a USB Host thumbdrive. But, that really depends on the PC and how much power the thunbdrive consumes…

Gerald

3

I have beagleboard Rev C4...
m booting with all latest files downloaded from
http://www.angstrom-distribution.org/demo/beagleboard/
but my USB EHCI port is not working...

m giving power to board through usb-OTG and i am using hub which is
externally powered.

In boot partition
1) MLO_rev_v3 (copied as MLO)
2) u-boot_rev_v3.bin ( copied as u-boot.bin)
3) uImage_rev_v3.bin (copied as uImage.bin)

Ahh, where did you get these "v3"'s from? Not from the angstrom demo page..

(there is a power regulator lacking "bug/feature" in u-boot's made
before the "C4" came out)

In other partition
1) Angstrom-Beagleboard-demo-image-glibc-ipk-2009.X-test-20090104-
beagleboard.rootfs.tar.bz2
2) modules-2.6.29-r47-beagleboard.tgz

when i try to access my usb drive it showing message
"can't open '/dev/sda': No such file or directory"

Does it is necessary to provide power to beagleboard with power
adapter while connecting peripherals to beagleboard?

Plz help...

Regards,

4

Hi,

Please try with u-boot-revc4.bin from
http://code.google.com/p/beagleboard/downloads/list
I think there is some USB fix for Rev C4 u-boot.

Regards,
Ashwin