Hey Arnd, So it looks like something has gone awry in the 3.5 pull with Panda's mmc functionality. Trying to boot the current 3.5-rc tree, the boot fails after not finding the root device. Looking at the boot log I'm seeing:
omap_hsmmc: probe of omap_hsmmc.0 failed with error -22
With the same config on 3.4 it boots up fine. I also tried w/ the omap2plus_defconfig and see the same behavior.
Before I start bisecting down, I just wanted to raise the issue here in case there's a known fix.
thanks -john