[fedora-arm] BeagleBone Black CPU speed

[Robert Nelson]

On Fri, Jan 17, 2014 at 3:52 AM, Peter Robinson <pbrobinson at gmail.com> wrote:
> On Sun, Dec 29, 2013 at 7:14 PM, Robert Nelson <robertcnelson at gmail.com> wrote:
>> On Sun, Dec 29, 2013 at 12:10 PM, Steve Underwood <steveu at coppice.org> wrote:
>>> Hi,
>>>
>>> It looks like the BeagleBone Black is still running at 550MHz with the
>>> latest Fedora 20. Does anyone know what is holding it back from running at
>>> 1GHz? Is the a uboot thing, or a kernel thing, or something else? I saw a
>>> version of uboot referred to as making the BBB run at 1GHz, but when I tried
>>> experimenting with that I got the same 550MHz clock speed.
>>
>> with v3.12.x:
>> These 5 patches are needed:
>> https://github.com/RobertCNelson/linux-dev/tree/am33x-v3.12/patches/cpufreq
>>
>> or with v3.13-rcX:
>> https://github.com/RobertCNelson/linux-dev/blob/am33x-v3.13/patches/dts/0002-arm-dts-am335x-boneblack-add-cpu0-opp-points.patch
>
> I've enabled the generic cpufreq support, we had it disabled as when
> it first landed it had problems.
>
> The BBB is booting with 3.13rc8 with no patches but there's a few
> issues I need to resolve this week with USB so I'll review that for
> the BB patchset to make sure it's there. Is it queued to go upstream
> for 3.14?

3.14 is closed, I'm cleaning my patches listed in that repo and
planning to post to l-a/l-o after v3.14-rc1 hits..

Talking with CircuitCo, they would prefer the default pinmux to be
setup like so:

http://elinux.org/Basic_Proto_Cape

So i'm adding those changes to the push too..

Regards,

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