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

David Vermeille dvermd at gmail.com
Sat Jul 10 19:19:17 CEST 2010

2010/7/4 Tha_Man <jeroenbreg at hotmail.com>

> Hi again,
> I couldn't resist to do some more testing, so I copied my QtMoko SDcard
> installation to NAND. QtMoko from NAND boots fine in most cases (see
> overview), it's suspend and resume that fails when overclocked. However,
> suspend and resume works fine with the original NAND U-boot and your
> default
> clocked U-boot. I've flashed the overclocked images exactly as you posted
> and flashed u-boot_env.in as well, no errors were reported during
> flashing.
> Here's an overview:
> Tested under QtMoko v24, using different u-boot images flashed in NAND:
> + u-boot-gta02v5-1.3.1: works fine
> + u-boot.udfu_400_100_1.7: works fine
> - u-boot.udfu_450_112_1.65_1.9: won't boot (hangs on 'Starting kernel...')
> - u-boot.udfu_450_112_1.7_1.9_sdmax: won't boot (hangs on 'Starting
> kernel...')
> * u-boot.udfu_500_83_1.7: fails to resume after suspend
> * u-boot.udfu_500_83_1.7_1.8_CLK2: fails to resume after suspend
> * u-boot.udfu_533_88_1.7: fails to resume after suspend
> * u-boot.udfu_533_88_1.7_1.8_CLK2: fails to resume after suspend
> So most u-boot images boot fine with QtMoko v24 and report the correct
> speeds, but my phone doesn't wake up after suspend with any of the
> overclocked images; I have to remove the battery to be able to boot again.
> Even the 450Mhz-images you reported as 'working under qtmoko' fail with me,
> but I'm not sure if you tested suspend and resume. I'm using the default
> v24-kernel, based on 2.6.29 I believe.
> I hope my tests are of any help, if I need to test something else, please
> let me know.
> Cheers,
> Tha_Man
> --
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I'm using QtMoko on SD from a long time and wanted to give these uboot
versions (500 and 533) a try. I kept my uboot env because yours doesn't seem
to add any new parameters.

They worked well but I have the same problems as Tha_Man : my FR doesn't
resume after suspend.

Back to your 400 uboot, the same QtMoko (same partitions and uboot env)
suspends and resumes well.

SHR-U suffers from the same symptoms.

I hope you'll be able to track and solve this problem because FR is really
faster at 500 or 533 Mhz and that's great.

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