I did git pull from your dtb-rebuilder repository to get your latest 
updates and i recompiled to get the am335x-boneblack-emmc-overlay.dtb 
copied to my /boot/dtbs/4.4.1-ti-r2 folder. 

I did change  the contents of the uEnv file to: 
dtb=am335x-boneblack-emmc-overlay.dtb

i rebooted and no hang time which is good but now the cape manager is 
failing to load. So i went ahead and commented out the line: 
#dtb=am335x-boneblack-emmc-overlay.dtb
and restarted the system to see if the emmc-overlay was the issue.  After 
reboot there's still an error with the cape manager at boot. So im 
confronted with an entirely different issue.  i have set

cape_enable=bone_capemgr.enable_partno=BB-I2C1,BB-SPIDEV1


 but spi1 nor i2c1 is enabled:

ls: cannot access /dev/spi*: No such file or directory


root@beaglebone:/boot/dtbs# li2c 
lrwxrwxrwx 1 root root 0 Jul 22 19:32 /sys/bus/i2c/devices/i2c-0 -> 
../../../devices/platform/ocp/44e0b000.i2c/i2c-0
lrwxrwxrwx 1 root root 0 Jul 22 19:32 /sys/bus/i2c/devices/i2c-2 -> 
../../../devices/platform/ocp/4819c000.i2c/i2c-2

also dmeg outputs:

root@beaglebone:/boot/dtbs# dmesg | grep cape
[    0.000000] Kernel command line: console=ttyO0,115200n8 
bone_capemgr.enable_partno=BB-I2C1,BB-SPIDEV1 
root=UUID=14cc3e93-25d2-4555-9daa-613112047ac1 ro rootfstype=ext4 rootwait 
fixrtc coherent_pool=1M quiet
[    3.331315] bone_capemgr bone_capemgr: Failed to get baseboard eeprom 
cell
[    3.338374] bone_capemgr: probe of bone_capemgr failed with error -2
 

I'm not sure what to do to fix this...any suggestions, thanks RCNelson for 
the help so far?
On Wednesday, July 22, 2015 at 11:33:48 AM UTC-7, RobertCNelson wrote:
>
> On Wed, Jul 22, 2015 at 11:20 AM,  <[email protected] <javascript:>> 
> wrote: 
> > after uncommenting the line: 
> > #dtb=am335x-boneblack-overlay.dtb 
> > 
> > ...my beaglebone has trouble loading the kernel and drops to a shell. 
>  i've 
> > managed to record the debug output from uart0: 
> > 
> > Starting kernel ... 
> > 
> > [    0.000453] WARNING: Your 'console=ttyO0' has been replaced by 
> 'ttyS0' 
> > [    0.000463] This ensures that you still see kernel messages. Please 
> > [    0.000471] update your kernel commandline. 
> > [    3.554658] omap_voltage_late_init: Voltage driver support not added 
> > [    3.676455] bone_capemgr bone_capemgr: slot #0: No cape found 
> > [    3.736442] bone_capemgr bone_capemgr: slot #1: No cape found 
> > [    3.796440] bone_capemgr bone_capemgr: slot #2: No cape found 
> > [    3.856434] bone_capemgr bone_capemgr: slot #3: No cape found 
> > Loading, please wait... 
> > Gave up waiting for root device.  Common problems: 
> >  - Boot args (cat /proc/cmdline) 
> >    - Check rootdelay= (did the system wait long enough?) 
> >    - Check root= (did the system wait for the right device?) 
> >  - Missing modules (cat /proc/modules; ls /dev) 
> > ALERT!  /dev/disk/by-uuid/4ccbfb5c-9e82-4bed-aa38-a0d7a10e2404 does not 
> > exist.  Dropping to a shell! 
> > (initramfs) cat /proc/cmdline 
> > console=ttyO0,115200n8 
> bone_capemgr.enable_partno=BB-I2C1,BB-CAN1,BB-SPIDEV1 
> > root=UUID=4ccbfb5c-9e82-4bed-aa38-a0d7a10e2404 ro rootfstype=ext4 
> rootwait 
> > fixrtc coherent_pool=1M quiet 
>
> Are you using the eMMC? 
>
> dtb=am335x-boneblack-emmc-overlay.dtb 
>
> (it was just recently added, so your kernel might not have it yet) 
>
> Regards, 
>
> -- 
> Robert Nelson 
> https://rcn-ee.com/ 
>

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