AnsweredAssumed Answered

How to configure fix CPU frequency?

Question asked by matter on Sep 26, 2017
Latest reply on Sep 28, 2017 by matter

Hi,

we use the following development setup:

Processor: IMX6ULL

Board: MCIMX6ULL-14X14-EVK

BSP: git://git.freescale.com/imx/fsl-arm-yocto-bsp.git -b imx-4.1-krogoth

 

Use case: For efficiency and testing reasons, we want the IMX6ULL processor to always run at the minimum frequency available (198Mhz) - independent of the current system load. Therefore, we want to build a Yocto-based Linux image that ties the processor to that fixed, predefined frequency value. In general, what would be the right/intended way to do this?

 

So far, we tried to change the kernel configuration by setting the default governor to userspace. Therefore, we followed the steps from the Yocto Manual. However, neither our defconfig nor our config fragments have been recognized by the bitbake build process.

 

Thanks in advance!

 

Regards,

Matthias

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