cpu reclocking to 500Mhz, overclocking to 533Mhz, performance tests and bootloader images

Tha_Man jeroenbreg at hotmail.com
Sat Jul 3 18:22:08 CEST 2010


Thanks a lot for the clarification! I successfully flashed my Freerunner with
"u-boot.udfu_533_88_1.7_1.8_CLK2" and got the following results (from
QtMoko/Debian):
----------------------------------------
neo:~# dmesg | grep -i mhz
[    0.000000] S3C244X: core 532.000 MHz, memory 88.666 MHz, peripheral
44.333 MHz
neo:~# cat /proc/cpuinfo
Processor       : ARM920T rev 0 (v4l)
BogoMIPS        : 265.42
Features        : swp half thumb
CPU implementer : 0x41
CPU architecture: 4T
CPU variant     : 0x1
CPU part        : 0x920
CPU revision    : 0

Hardware        : GTA02
Revision        : 24420360
----------------------------------------
Compared to the original clocks:
----------------------------------------
neo:~# dmesg | grep -i mhz
[    0.000000] S3C244X: core 400.000 MHz, memory 100.000 MHz, peripheral
50.000 MHz
neo:~# cat /proc/cpuinfo
Processor       : ARM920T rev 0 (v4l)
BogoMIPS        : 199.47
Features        : swp half thumb
CPU implementer : 0x41
CPU architecture: 4T
CPU variant     : 0x1
CPU part        : 0x920
CPU revision    : 0

Hardware        : GTA02
Revision        : 24420360
------------------------------------------
So basically from 200 bogoMIPS at 400Mhz to 265 bogoMIPS at 533Mhz, very
nice! The QtMoko interface seemed even more responsive, I was able to
operate my phone normally and start Navit for example.

However, QtMoko seems to have a problem with booting from u-boot using an SD
card and suspending. I tried both with *and* without the overclock, but when
I suspend my phone when I booted from u-boot, it won't resume... I'm using a
QtMoko installation on my SD card, I haven't tried QtMoko on NAND-flash yet
(can anyone confirm it should work?). This is obviously a QtMoko problem and
not related to the overclock, but still I am curious: is it possible to
achieve the overclock when booting with Qi, by setting kernel parameters or
something?

Thanks for your efforts and I hope others will test it as well!

Cheers, Tha_Man
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