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Old 04-18-2017, 05:02 PM   #46
OldHolborn
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Registered: Jul 2012
Distribution: Slackware!
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It took a while for there to be time for play...

Now running mainline u-boot and an almost mainline kernel (linux-rockchip for-next).

My power-supply looks like the limiting factor at the moment, openssl speed will happily run 2GHz @ 1.425v but to run that -multi 4 requires dropping to 1.73GHz @ 1.375v.

1.73GHz at 1.4v -multi 4 also bombs, suggesting that either the rpi powersupply or the onboard regulation just isn't beefy enough for this running full tilt.

Temps at the moment are manageble, peaking at 68C during multi4, that will of course not be the case if the speeds and voltages are bumped further. (currently using the stock heatsink and a PSU fan sat at the end of the board...)

Running headless at the moment, so sound and video not a concern. One minor niggle, especially during this crash-tastic testing is that while reboot works on Rockchip's 4.4 kernel, it doesn't seem to work with this 4.11-rc3 branch kernel.

One to dig into!

Full report once 4.12 comes out and hopefuly Stuart can add another one to his list
 
Old 08-19-2017, 08:05 AM   #47
sndwvs
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Registered: Aug 2014
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release flash to SDCARD

1. The bootloader of the system is written to the image
2. mainline u-boot - U-Boot 2017.09-rc2-00066-g336aee50cf-dirty (Aug 19 2017 - 11:54:21 +0300)

howto:
1. download all http://dl.fail.pp.ua/slackware/firefly-rk3288/legacy/
2. /dev/mmcblk0 - уour memory card
dd if=slack-current-miniroot_24Jul17-4.4.77-firefly_rk3288-build-20170819.img of=/dev/mmcblk0 bs=1M
dd if=slack-current-xfce_24Jul17-4.4.77-firefly_rk3288-build-20170819.img of=/dev/mmcblk0 bs=1M

1. update kernel 4.4.77
2. flash uboot to mmc: ./rkdeveloptool db rk3288_ubootloader_v1.01.06.bin
./rkdeveloptool wl 0x40 idbloader.img
./rkdeveloptool wl 0x4000 uboot.img
3. after flash uboot transfer sd -> mmc, run setup after booting

Last edited by sndwvs; 08-21-2017 at 01:11 PM.
 
  


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