[fedora-arm] Fedora 21 on BeagleBoard-xM Rev C

[Robert Nelson]

On Sat, Feb 28, 2015 at 11:12 PM, Sergio Durigan Junior
<sergiodj at sergiodj.net> wrote:
> On Saturday, February 28 2015, Scott M. Jones wrote:
>
>> I'm booting F21 LXDE successfully on Beagleboard xM rev B.  Different
>> DTB but the rest should be the same.  Comparing mine to yours you may be
>> loading the kernel at the wrong address.  I'm not really using the boot.scr.
>>
>> More info here including my uEnv.txt:
>> https://lists.fedoraproject.org/pipermail/arm/2015-January/008901.html
>
> Thanks for the reply, Scott.  Actually, your post was one of the first
> ones I saw, and apparently I should have paid more attention to it :-).
>
> Well, I don't think the problem is loading the Linux kernel at the wrong
> address, but rather using the wrong dtb file.  I was using
> omap3-beagle-xm.dtb, but when I replaced that by omap3-beagle-xm-ab.dtb,
> at least I got the kernel to boot.  I am not really sure the -ab version
> fully works with rev C, but that's the best I've gotten now, apparently.

the "-ab" just inverts the signal enabling the usb hub.

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/arch/arm/boot/dts/omap3-beagle-xm-ab.dts

So running the "-ab" on the "c" just disables the usb hub..

Regards,

-- 
Robert Nelson
http://www.rcn-ee.com/