On Fri, Mar 21, 2014 at 9:24 AM, <cwrseckf...@gmail.com> wrote:
> Okay, I'm officially confused. I've been trying to increase the speed
> of my BBB from the default 550MHz to 1GHz, and failing; this is with the
> elderly 3.8.13-37 sources. After a few failures I went back to a seriously
> ancient kernel, just to get something to run, and found that the
> 3.8.13-bone22
> sources boot and run at 1GHz using the performance governor with no
> problems.
>
> I then found that there are a set of patches for _3.12_ on a Fedora mailing
> list which add cpu speed setting, which implies that 3.8 can't set the
> speed.
> Can anyone resolve that conundrum?
voodoo@am335x-boneblack-512mb-0:~$ uname -a
Linux am335x-boneblack-512mb-0 3.13.6-bone7 #1 SMP Fri Mar 7 21:37:01
UTC 2014 armv7l GNU/Linux
voodoo@am335x-boneblack-512mb-0:~$ cpufreq-info
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpuf...@vger.kernel.org, please.
analyzing CPU 0:
driver: generic_cpu0
CPUs which run at the same hardware frequency: 0
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 300 us.
hardware limits: 300 MHz - 1000 MHz
available frequency steps: 300 MHz, 600 MHz, 800 MHz, 1000 MHz
available cpufreq governors: conservative, ondemand, userspace,
powersave, performance
current policy: frequency should be within 300 MHz and 1000 MHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 300 MHz.
cpufreq stats: 300 MHz:43.76%, 600 MHz:0.00%, 800 MHz:0.57%, 1000
MHz:55.67% (6)
> I then tried building 3.14, since that's the most recent set of fixes
> (btw am335x-pm-firmware.bin is missing from the 3.14 kernel package)
That actually does not matter, as it does not work outside ti's v3.12.x anyways.
> and found that it couldn't boot from the USB; it simply hung trying
> to access /dev/sda. It couldn't handle my standard NFS boot either.
>
> Most of the kernel problems have to be configuration issues, but after a
> couple of days of checking I can't find anything missing from the USB/SCSI
> setup. So does anyone have a kernel config file for 3.14, which enables
> most of the peripherals?
I actually haven't tried that in awhile, might have broke something.
(usb rootfs)
Regards,
--
Robert Nelson
http://www.rcn-ee.com/
--
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