Voltage and Frequency Scaling of iMX6 SoloX and/or iMX7

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Voltage and Frequency Scaling of iMX6 SoloX and/or iMX7

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yma1
Contributor I

Hi,

I am looking for a chip which has multiple cores and each core can work at different voltages and frequencies. It seems the iMX6 SoloX and/or iMX7 can satisfy my requirement. Is it true that I can use different DVFS strategies for the A9 core and M4 core, and adjust their frequencies separately? Also, for the A9 core or M4 core, can I just adjust the core frequency but keep the voltage constant? I have worked on other embedded chip, but each time I change frequency, the voltage also changes. I want to make sure that for this chip, I can adjust the voltage and frequency independently.

Thanks.

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi Yue

M4 frequency does not depend on voltage, A7/9 depends as described in

processor Datasheets Table  Operating ranges

http://cache.freescale.com/files/32bit/doc/data_sheet/IMX6SXCEC.pdf 

http://cache.nxp.com/files/32bit/doc/data_sheet/IMX7DCEC.pdf 

Frequency can be set using Chapter 23 CPU Frequency Scaling (CPUFREQ) Driver

attached Linux Manual.

Best regards
igor
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