info on this can be found here: https://groups.google.com/d/msg/beagleboard/81TsiNp4Bok/FZKXz9GHpHoJ
the wiki page will be updated shortly with more details... Dave On Wednesday, May 14, 2014 8:18:40 AM UTC-5, Aaron Clarke wrote: > > I'm looking for some help getting the audio cape rev. B1 running on > debian. I'm not able to load the overlay, I suspect I'm using the wrong > kernel or need to compile the firmware into the kernel. > > Circuitco provided an overlay, I have the latest image I can > find, BBB-eMMC-flasher-debian-7.4-2014-04-23-2gb.img > > I downloaded the overlay here: > http://elinux.org/CircuitCo:Audio_Cape_RevB > > From above link: > "The device tree overlay is available at the bottom of this page. ... The > current Debian images have the required patches and will play audio > normally." > > I compiled the overlay on the board with this command > #dtc -o dtb -o BB-BONE-AUDI-02-00A0.dtbo -b 0 -@ BB-BONE-AUDI-02-00A0.dts > and put it in /lib/firmware > > root@beaglebone:~# echo BB-BONE-AUDI-02 > /sys/devices/bone_capemgr*/slots > -bash: echo: write error: Invalid argument > > dmesg output: > [ 290.610210] bone-capemgr bone_capemgr.9: part_number 'BB-BONE-AUDI-02', > version 'N/A' > [ 290.612723] bone-capemgr bone_capemgr.9: slot #7: generic override > [ 290.612784] bone-capemgr bone_capemgr.9: bone: Using override eeprom > data at slot 7 > [ 290.612836] bone-capemgr bone_capemgr.9: slot #7: 'Override Board > Name,00A0,Override Manuf,BB-BONE-AUDI-02' > [ 290.613099] bone-capemgr bone_capemgr.9: slot #7: Requesting part > number/version based 'BB-BONE-AUDI-02-00A0.dtbo > [ 290.613153] bone-capemgr bone_capemgr.9: slot #7: Requesting firmware > 'BB-BONE-AUDI-02-00A0.dtbo' for board-name 'Override Board Name', version > '00A0' > [ 290.617371] bone-capemgr bone_capemgr.9: slot #7: dtbo > 'BB-BONE-AUDI-02-00A0.dtbo' loaded; converting to live tree > [ 290.617415] Invalid device tree blob header > [ 290.622050] bone-capemgr bone_capemgr.9: slot #7: Failed to unflatten > > I tried to disable HDMI but that didn't help. > > This blog post mentions a possible bug that makes it necessary compile a > kernel or change a setting to get loadable overlays. Is that the case here? > > http://hipstercircuits.com/enable-device-tree-overlay-on-startup-on-beaglebone-black/ > > Thanks, > > Aaron > -- 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 [email protected]. For more options, visit https://groups.google.com/d/optout.
