How to change PLL frequency in Linux Kernel?

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How to change PLL frequency in Linux Kernel?

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t_kuha
Contributor I

Hi,

I would like to change PLL PFD frequency of i.MX 6 Quad in Linux Kernel.

The question is: what should I do to achieve this?

(Do I only have to change device tree or do I have to change the Kernel source code?)

I use Linux Kernel & BSP ver. 3.14.52

Best regards,

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi t_kuha

one can look at codes in cpufreq, busfreq drivers described in

sect.2.5.3 CPU Frequency Scaling (CPUFREQ),sect.2.5.3.3 Source Code Structure

sect.2.5.4 Dynamic Bus Frequency, sect.2.5.4.4 Source Code Structure

i.MX Linux Reference Manual

linux-imx - i.MX Linux kernel 

Best regards
igor
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