I am having trouble getting my Beagleboard-xm to boot when 
the omap3-beagle-xm.dtb is loaded by u-boot

Best I can tell, u-boot loads the kernel and the dtb file successfully but 
boot locks up with "Waiting for root device /dev/mmcblk0p2..."

There are a number of things in the boot log that look unhealthy however 
directly relating to the SD card I found the following:

[    1.565521] omap_hsmmc mmc.20: unable to select pin group
[    1.571563] omap_hsmmc mmc.20: Failed to get debounce clk
[    1.577270] /ocp/mmc@4809c000: can't find DMA channel
[    1.582611] omap_hsmmc mmc.20: unable to obtain RX DMA engine channel 62

If I modify my uEnv.txt to skip loading the dtb file everything appears to 
load up properly. What can I do to troubleshoot the dtb?

I need SGX drivers so I am stuck with the following versions:
I am using the 3.7.x kernel 
from https://github.com/RobertCNelson/stable-kernel
Ubuntu 11.10 (no longer available to download from RCN's file server)
u-boot 2014.1 from 
http://eewiki.net/display/linuxonarm/BeagleBoard#BeagleBoard-Bootloader:U-Boot

About the bootloader:
Ubuntu 11.10 comes with 2013.7 but there is something wrong with the 
uEnv.txt and the dtb cannot be loaded and falls back on loading the kernel 
without it.
I need to rebuild u-boot to remove the 2 second boot delay and kernel 
validation(boot speed is requirement of the project).
The patches from RCN for version 2013.7 fail to apply properly so I am 
using version 2014.1 which appears to be functioning properly.

full boot log:
http://pastebin.com/NbsM8gq0

uEnv.txt(dtb load disabled):
http://pastebin.com/NWuYSYd8

I've been banging my head against the wall for about a week now on this. 
Any ideas as to what I could try would be awesome!

Thanks

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