BeagleBoard C4 at 720MHz

[krovetz]

Does anybody know how to get the C4 BeagleBoard running at 720MHz? Earlier BeagleBoards were restricted to 600MHz, but the C4 silicon was rated at 720MHz.

I believe mine is running at 600MHz because /proc/cpuinfo shows BogoMIPS of 611.50 and /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq shows 600000.

When I set mpurate=720 in boot.scr, BogoMIPS shows 424.35 and cpuinfo_cur_freq still shows 600000. And dmesg shows "Switched to new clocking rate (Crystal/Core/MPU): 26.0/332/720 MHz".

[krovetz]

Thanks for the suggestion. I tried it out, and get 600 MHz either way.

[krovetz]

The default governor is "performance", which I believe should maximize the CPU rate. It really seems that the kernel is treating my BB like a pre-C4, which were limited to 600 MHz.

[tesla]

Check my post. I was able to get it up to 720Mhz.

[kleim]

I know I don't need all the power from my Beagleboard for my modest use but it is annoying to know I can't use all its power, considering I get over 990 Bogomips with the linux distro on the SD card that came with the Beagleboard XM. It is an old version of Linux Angstrom and somehow it seems it is one of the very few distro that can unlock the full speed of the Beagleboard XM.

[Edit]
It seems some compiling options for Beagleboard XM causes some issues in "non-XM" Beagleboard.