Thanks Robert, this is very useful information that I did not know. On Wednesday, March 12, 2014 5:09:56 PM UTC-4, RobertCNelson wrote: > > On Wed, Mar 12, 2014 at 4:05 PM, Bit Pusher > <[email protected]<javascript:>> > wrote: > > Thanks John, this worked. I also tried modifying > > /lib/firmware/cape-boneblack-hdmi-00A0.dts to remove the conflicts > (without > > disabling HDMI in /boot/uboot/uEnv.txt) , and then recompiled to make a > new > > /lib/firmware/cape-boneblack-hdmi-00A0.dtbo, > > but dmesg still reported a conflict with P9_25 even though P9_25 and > mcasp0 > > had been removed. This indicates to me that > > /lib/firmware/cape-boneblack-hdmi-00A0.dtbo is not being read from > > /lib/firmware at boot; do you know where it is being read from? Or can > you > > point me to a link for the process and places of loading overlay files > on > > the Ubuntu BBB at boot? I am really having difficulties finding > > documentation regarding this so any helpful links are appreciated. > > With the current kernel config, all "firmware" is built into the > kernel. We could disable that, but then it could take udev up to 60 > seconds to actually find it on debian/ubuntu based systems. Best > thing to do is disable all the capes in uEnv.txt then write an init > script to load that specific *.dtbo into the slot early in bootup. > > Regards, > > -- > Robert Nelson > http://www.rcn-ee.com/ >
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