How can I check or change the clock speed of DRAM at Ubuntu?

VIM4
1

Which system do you use? Android, Ubuntu, OOWOW or others?

I’m using Ubuntu which installed from OOWOW.

Which version of system do you use? Khadas official images, self built images, or others?

I’m using Khadas official image. Ubuntu 22.04.

Please describe your issue below:

I’d like to check the clock speed of memory(DRAM).
There are so many answers on the websites that they told “dmidecode” is useful to check.
So I installed “dmidecode” but terminal answer “No SMBIOS not DMI entry point found, sorry”.
How can I check the clock speed of memory ?
And if I want to change the operation clock speed of DRAM then how can I ?

Post a console log of your issue below:


**Delete this line and post your log here.**
2

dmidecode - not work for this platform

3

can ask @numbqq how to , i think he must have answer

4

Then, how can I check ? please advice to me.

5

You need edit U-Boot to change the DDR frequency.

Edit file board/khadas/kvim4/firmware/timing.c to find DRAMFreq to change the frequency.

But we don’t suggest you to change the frequency, the default frequency is well turned, you don’t need to change it, and we can’t provide support about this.

1 Like
6

OK, thank you for your advice.