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Maximum allowed frequency is 1.51GHz on 2.0.8 TinkerOS
#1
Hi Folks, 

It seems on TinkerOS 2.0.8 the maximum allowed frequency is 1.51GHz, down from 1.8GHz on 2.0.5, is there a reason for that? How can I use 1.8GHz on newer releases?

Best regards,
[-] The following 1 user Likes bruna's post:
  • mark-aus-51
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#2
...would be interesting to kwow, if the is a possibility to "overclock" back to 1,8GHz without kernel-patching. I cannot find a file like Raspberry Pi`s "/boot/config.txt".

Cheers
Mark
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#3
https://www.armbian.com/tinkerboard/

- 1.8Ghz OOB
- kernel 4.19.y
- support for normal and S
- minimal and clean
- overlay support
- compressed memory logging
- Chromium caching with webgl acceleration
- video acceleration https://forum.armbian.com/topic/7262-rk3...oard-miqi/
- 3D acceleration
...
Armbian. Lightweight Debian Stretch or Ubuntu Bionic for Tinker Board.
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#4
(01-10-2019, 01:49 PM)bruna Wrote: Hi Folks, 

It seems on TinkerOS 2.0.8 the maximum allowed frequency is 1.51GHz, down from 1.8GHz on 2.0.5, is there a reason for that? How can I use 1.8GHz on newer releases?

Best regards,

Dear, bruna
    Thanks for your reporting. We just solved this problem on develop branch. We will fix at the next release. 
    https://github.com/TinkerBoard/debian_ke...8bf238ba7b
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#5
Any word on when the next release of the img file will be?
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#6
I still using 2.0.7...
But from @Jamess' feedback. The patch codes is modified in dts, Device Tree.

So, I guess, we can easy to replace it without effort.

https://tinkerboarding.co.uk/wiki/index....are#Kernel
Code:
$ sudo apt-get install git-core gitk git-gui gcc-arm-linux-gnueabihf gcc-arm-linux-gnueabi device-tree-compiler gcc-aarch64-linux-gnu mtools parted libssl-dev fakeroot

$ git clone https://github.com/TinkerBoard/debian_kernel.git -b release
$ cd debian_kernel

$ curl https://github.com/TinkerBoard/debian_kernel/commit/e25240baee05159d48ed739021f13f8bf238ba7b.patch | git apply -v

$ make miniarm-rk3288_defconfig ARCH=arm -j16

$ make rk3288-miniarm.dtb ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- -j16
$ make dtbs ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- -j16
(I've modified some steps, but I haven't tried them)
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#7
I have found a working solution here:

[https://] qiita.com/mt08/items/00c659c732b0c7904269
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#8
(03-17-2019, 08:25 AM)wiktorsz Wrote: I have found a working solution here:

[https://] qiita.com/mt08/items/00c659c732b0c7904269


Unfortunately, my knowledge of Chinese is not good enough to understand everything Sad

Cheers
Mark
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#9
wow, mt08's steps is more easy!!
BTW, that's Japaneses, not Chinese.

So, before APT update & install any package.
Hold the Chromium, keep it not upgraded.

Code:
sudo apt-mark hold chromium

Then
Code:
# update repo list
sudo apt update

# install device-tree comiler
sudo apt install -y device-tree-compiler

# change to /boot folder
cd /boot

# copy a backup file.
sudo cp rk3288-miniarm.dtb rk3288-miniarm.dtb.bak

# convert dtb file to dts
sudo dtc -I dtb -O dts rk3288-miniarm.dtb -o rk3288-miniarm.dts

# add the patch
#grep 'rockchip,max-volt' rk3288-miniarm.dts
sudo sed -i -e 's/<0x149970>/<1400000>/g' rk3288-miniarm.dts

# convert dts file to dtb
sudo dtc -I dts -O dtb rk3288-miniarm.dts -o rk3288-miniarm.dtb

# reboot
sudo reboot
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#10
Hi,

I've uploaded dtb.


Code:
# Fix Cpu Freq : /boot/rk3288-miniarm.dtb

curl -sSL https://github.com/mt08xx/files/raw/master/TinkerOS-v2.0.8_CPUFreqFix_rk3288-miniarm.dtb.bz2 | bzip2 -dc | tee rk3288-miniarm.dtb | md5sum
# => ce70fbd5cf42cc3e4d9728612837887e  - (Correct file ?)

# backup and copy to /boot
sudo mv /boot/rk3288-miniarm.dtb{,.bak}
sudo cp ./rk3288-miniarm.dtb /boot
[-] The following 1 user Likes mt08's post:
  • mark-aus-51
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