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About set points for the VDDARM/SOC voltage of DVFS and the Bus Frequence driver, for i.MX6UL LinuxBSP

Question asked by yuuki on Nov 13, 2015
Latest reply on Nov 13, 2015 by igorpadykov

Dear all,


I investigate DVFS function of i.MX6UL.


In AN5170, The voltage levels of VDDARM and VDDSOC is shown in following Table1.

VDDARMSOC voltage level.png


On the other hand, in i.MX Linux Reference Manual for i.MX6UL,
Dynamic Bus Frequency Driver has three set points.
- 1. High Frequency Setpoint
- 2. Audio Playback setpoint
- 3. Low Frequency setpoint


Does the table1 of AN5170 match those set points of  Dynamic Bus Frequency Driver?

     For example,
     When High Frequency Setpoint is set, the voltage of VDDSOC and VDDARM in 528MHz is used.


May I have advice?


Best Regards,