[SOLVED] device tree overlay on BeagleBoneBlack

[aboitor]

I am trying to install and use beagleg with a stepper motor application. The software has installed on by beagleboneblack, however I cannot install the device tree overlay. I have posted the command I run and the resulting output below.

Any help would be greatly appreciated.

Thank you.

debian@debian-armhf:~/beagleg/hardware$ sudo ./start-devicetree-overlay.sh BUMPS/BeagleG-BUMPS.dts 
dtc -I dts -O dtb -o BUMPS/BeagleG-BUMPS-00A0.dtbo -b 0 -@ BUMPS/BeagleG-BUMPS.dts
dtc: invalid option -- '@'
Usage:
	dtc [options] <input file>

Options:
	-h
		This help text
	-q
		Quiet: -q suppress warnings, -qq errors, -qqq all
	-I <input format>
		Input formats are:
			dts - device tree source text
			dtb - device tree blob
			fs - /proc/device-tree style directory
	-o <output file>
	-O <output format>
		Output formats are:
			dts - device tree source text
			dtb - device tree blob
			asm - assembler source
	-V <output version>
		Blob version to produce, defaults to 17 (relevant for dtb
		and asm output only)
	-d <output dependency file>
	-R <number>
		Make space for <number> reserve map entries (relevant for 
		dtb and asm output only)
	-S <bytes>
		Make the blob at least <bytes> long (extra space)
	-p <bytes>
		Add padding to the blob of <bytes> long (extra space)
	-b <number>
		Set the physical boot cpu
	-f
		Force - try to produce output even if the input tree has errors
	-s
		Sort nodes and properties before outputting (only useful for
		comparing trees)
	-v
		Print DTC version and exit
	-H <phandle format>
		phandle formats are:
			legacy - "linux,phandle" properties only
			epapr - "phandle" properties only
			both - Both "linux,phandle" and "phandle" properties
make: *** [BUMPS/BeagleG-BUMPS-00A0.dtbo] Error 3
Failed to produce BUMPS/BeagleG-BUMPS-00A0.dtbo
cp: cannot stat `BUMPS/BeagleG-BUMPS-00A0.dtbo': No such file or directory

Adding BeagleG-BUMPS overlay
./start-devicetree-overlay.sh: line 69: echo: write error: No such file or directory
 0: 54:PF--- 
 1: 55:PF--- 
 2: 56:PF--- 
 3: 57:PF--- 
 4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
 5: ff:P-O-L Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI

 

[153rd]

Hey,

The first warning you get when running the start-devicetree-overlay.sh script is:

dtc: invalid option -- '@'

at: -@ BUMPS/BeagleG-BUMPS.dts
Later on, the program "make" fails at with the following: Failed to produce BUMPS/BeagleG-BUMPS-00A0.dtbo
Which seems to be directly related to the first warning/error.

So you're going to have to change this in your start-devicetree-overlay.sh shell script(I'm not sure what the point of this specific line is though, so you're going to have to post it or find out yourself).

Cheers!

 

[gag2000]

Hi,
1 : edit ./start-devicetree-overlay.sh (be sure to make a copy first !)
2 : replace
dtc -I dts -O dtb -o BUMPS/BeagleG-BUMPS-00A0.dtbo -b 0 -@ BUMPS/BeagleG-BUMPS.dts
by
dtc -I dts -O dtb -o BUMPS/BeagleG-BUMPS-00A0.dtbo -b O -@ BUMPS/BeagleG-BUMPS.dts
(the "0" becomes an "O" !)

Should work
RG

 

[aboitor]

Thank you for your suggestions.

It seems like I had the wrong version of dtc installed. I followed the instructions **broken link removed** to get the correct version after which I put the full path of the new dtc in beagleg/hardware/Makefile. The device tree overlay now seems to load:

debian@debian-armhf:~/beagleg/hardware$ sudo ./start-devicetree-overlay.sh BUMPS/BeagleG-BUMPS.dts 
/home/debian/dtc/dtc -I dts -O dtb -o BUMPS/BeagleG-BUMPS-00A0.dtbo -b 0 -@ BUMPS/BeagleG-BUMPS.dts

Adding BeagleG-BUMPS overlay
 0: 54:PF--- 
 1: 55:PF--- 
 2: 56:PF--- 
 3: 57:PF--- 
 4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
 5: ff:P-O-L Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
 8: ff:P-O-L Override Board Name,00A0,Override Manuf,BeagleG-BUMPS