Software .dtb

Question

Software .dtb

awright424 opened this issue 9 years ago · comments

Can you add a section to the software area that deals with building the pru firmware and loading the proper overlay with the 4.0 kernel. I have updated my kernel from your image but seem to be having issues with the overlay loading and the pru's working.

Mirko Denecke · Answer 1 · Mon Jul 27 2015 03:15:30 GMT+0800 (China Standard Time)

Hi Alex,
it is not necessary to build the PRU firmware. If you are using Kernel 4.0 you have to do:
git clone https://github.com/RobertCNelson/dtb-rebuilder.git
cd dtb-rebuilder
git checkout 4.0.x
make clean
make
sudo make install

After that you have to modify the /boot/uEnv.txt file.

sudo nano /boot/uEnv.txt

Add a line:
dtb=am335x-boneblack-bbbmini.dtb

Now reboot.

Alex Wright · Answer 2 · Mon Jul 27 2015 03:18:38 GMT+0800 (China Standard Time)

Thank you will try that out. Is there any chance of me being able to get
the latest revision of the pcb? I will probably try to get something 3d
printed as to not damage the cape and the beaglebone black.
On Jul 26, 2015 3:15 PM, "Mirko Denecke" notifications@github.com wrote:

Hi Alex,
it is not necessary to build the PRU firmware. If you are using Kernel 4.0
you have to do:
git clone https://github.com/RobertCNelson/dtb-rebuilder.git
cd dtb-rebuilder
git checkout 4.0.x
make clean
make
sudo make install

After that you have to modify the /boot/uEnv.txt file.

sudo nano /boot/uEnv.txt

Add a line:
dtb=am335x-boneblack-bbbmini.dtb

Now reboot.

—
Reply to this email directly or view it on GitHub
#9 (comment).

Mirko Denecke · Answer 3 · Mon Jul 27 2015 03:54:06 GMT+0800 (China Standard Time)

I Alex,
the Rev 1.4 boards unfortunately not arrived here until now. I will inform you when they are available. You can also produce your own batch, take a look on this description:
https://github.com/mirkix/BBBMINI-PCB#pcb

Alex Wright · Answer 4 · Sun Aug 02 2015 23:47:02 GMT+0800 (China Standard Time)

I finally took a deeper look. the bbbmini is not included the dtb-builder repo it is included the bb-overlays repo. Now I am wondering if I should be cloning that repo and attempting to load the cape versus the dtb. will report back.

Mirko Denecke · Answer 5 · Mon Aug 03 2015 04:15:39 GMT+0800 (China Standard Time)

Hi Alex,

it is in the dtb-rebuilder repo as I have written above. https://github.com/RobertCNelson/dtb-rebuilder/blob/4.0.x/src/arm/am335x-boneblack-bbbmini.dts

Alex Wright · Answer 6 · Mon Aug 03 2015 05:00:38 GMT+0800 (China Standard Time)

it is only available in the 4.0.x branch so cloning and building will not get you the dtb