[Odroid C2 general]

Anyone was able to patch the kernel and DT to go beyond 1.54 GHz on the C2?

Armbian is great, but it is frustrating to not be able to run at 1.75 GHz like I used to do with HK 3.16 kernel several years ago...

And to be clear, it was not cosmetic, as at 1,75 GHz, some CPU intensive tasks were not maxing the CPU load at 100% when at 1.54 it did.

 

I am completely lost with this kernel patching process, so I can’t do it by myself.

Would be great to have a optional kernel for those who want to use OC with C2.

[Odroid C2 general]

On 8/22/2020 at 11:18 PM, JMCC said:

Just to be clear: last time I checked, our mainline was using the custom HK blob for the C2 ( @TonyMac32 can you confirm this?). 

 

Which means that, even though the max frequency is 1.5 GHz, you get the real frequency. Unlike all the other S905' that report 1.5 but are actually running 1.4 GHz.

 

Now, in order to unlock higher frequencies, you need patches both for the kernel and for the DT. The patches were done for HK's 3.16.x kernel, and it may or may not be possible to port them to mainline.

 

It is probably not hard. But it needs a person to dive into the old 3.16.x kernel, extract the patches, and try to adapt them to mainline. You're welcome to try, you will for sure learn a lot, whether you finally get to fix it or not 

I sure would like to do that, but I have zero experience in Linux kernels so...

[Odroid C2 general]

To be clear, when I was talking about real difference, I was not talking about a feeling but a concrete difference (same task maxing CPU at 1.5 but not at 1.7).

 

Now, the whole idea is to have the mainline kernel to support all C2 frequencies.

I don’t know much about kernels and how I could help to add frequencies.

Since all is open source why is it so hard? Should not that be just adding the frequencies to a file or some settings in the mainline kernel?

[Odroid C2 general]

On 8/15/2020 at 7:33 PM, Igor said:

Armbian shows real speed, while hardware vendors (Amlogic not Hardkernel) are sometimes selling you bullshit.
 

 

It made a real difference for me between 15xx and 17xx. I’ve read somewhere that in the case of Odroid C2, armlogic cpu frequencies are accurate (but not so much for other).

[Odroid C2 general]

Any news on cpu max freq support on Odroid C2?

With armbian kernel 5.x, I can't go beyond 1.5 Ghz.

I used to run at 1.7 before I switched to armbian buster (from ubuntu 18 with hardkernel kernel 3.x)

 

Also, is there an equivalent of setEnv nographics "1" in armbian kernel?