Install device tree compiler using sudo apt-get install device-tree-compiler
When I installed Ubuntu 14.04, it didn’t have dtbo files for pwm, had to compile them manually. Faced errors with -@ option in while compiling device tree overlay, overcame with commands as given below wget -c https://raw.github.com/RobertCNelson/tools/master/pkgs/dtc.sh chmod +x dtc.sh ./dtc.sh source: http://hipstercircuits.com/problems-with-beaglebone-black-and-their-solution/ http://eewiki.net/display/linuxonarm/BeagleBone+Black#BeagleBoneBlack-Upgradedistro%22device-tree-compiler%22package got the missing dts files from https://github.com/beagleboard/devicetree-source now at https://github.com/venkaty89/devicetree-source/tree/master/arch/arm/boot/dts or https://github.com/beagleboard/devicetree-source/tree/master/arch/arm/boot/dts compiled required files using build file #!/bin/bash echo "Compiling the overlay from .dts to .dtbo" dtc -O dtb -o am33xx_pwm-00A0.dtbo -b 0 -@ am33xx_pwm-00A0.dts dtc -O dtb -o bone_eqep0-00A0.dtbo -b 0 -@ bone_eqep0-00A0.dts dtc -O dtb -o bone_eqep1-00A0.dtbo -b 0 -@ bone_eqep1-00A0.dts dtc -O dtb -o bone_eqep2-00A0.dtbo -b 0 -@ bone_eqep2-00A0.dts dtc -O dtb -o bone_pwm_P8_13-00A0.dtbo -b 0 -@ bone_pwm_P8_13-00A0.dts dtc -O dtb -o bone_pwm_P8_19-00A0.dtbo -b 0 -@ bone_pwm_P8_19-00A0.dts dtc -O dtb -o bone_pwm_P8_34-00A0.dtbo -b 0 -@ bone_pwm_P8_34-00A0.dts dtc -O dtb -o bone_pwm_P8_36-00A0.dtbo -b 0 -@ bone_pwm_P8_36-00A0.dts dtc -O dtb -o bone_pwm_P8_45-00A0.dtbo -b 0 -@ bone_pwm_P8_45-00A0.dts dtc -O dtb -o bone_pwm_P8_46-00A0.dtbo -b 0 -@ bone_pwm_P8_46-00A0.dts dtc -O dtb -o bone_pwm_P9_14-00A0.dtbo -b 0 -@ bone_pwm_P9_14-00A0.dts dtc -O dtb -o bone_pwm_P9_16-00A0.dtbo -b 0 -@ bone_pwm_P9_16-00A0.dts dtc -O dtb -o bone_pwm_P9_21-00A0.dtbo -b 0 -@ bone_pwm_P9_21-00A0.dts dtc -O dtb -o bone_pwm_P9_22-00A0.dtbo -b 0 -@ bone_pwm_P9_22-00A0.dts dtc -O dtb -o bone_pwm_P9_28-00A0.dtbo -b 0 -@ bone_pwm_P9_28-00A0.dts dtc -O dtb -o bone_pwm_P9_29-00A0.dtbo -b 0 -@ bone_pwm_P9_29-00A0.dts dtc -O dtb -o bone_pwm_P9_31-00A0.dtbo -b 0 -@ bone_pwm_P9_31-00A0.dts dtc -O dtb -o bone_pwm_P9_42-00A0.dtbo -b 0 -@ bone_pwm_P9_42-00A0.dts copied compiled dtbo files to /lib/firmware using cp -f *.dtbo /lib/firmware On Monday, 29 December 2014 12:58:58 UTC+5:30, n8a...@gmail.com wrote: > > Sorry for the super newbie question. What do I need to install in order > to have the /sys/devices/bone_capemgr* directory show up on a fresh Ubuntu > image? My software uses this to configure the device tree for PWM slots. > > Background: I was operating fine using the default Debian image that came > on the BBB Rev C, but for various reasons I decided to switch to Ubuntu > (Trusty). I used the image located here and all seemed to go well. I can > list the GPIOs at /sys/class/gpio, but there is no bone* under /sys/devices > like there used to be with the Debian (Wheezy) image. > > Any pointers would be appreciated. > > -Nate > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
