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Issues About LPDDR4 on iMX8 Frequency setting

Question asked by Hanson Chung on Sep 10, 2019
Latest reply on Sep 11, 2019 by igorpadykov

Hi All,




I downloaded the Msacle Tools for mx8m  EVB and i saw the setting about the LPDDR4 Freq is 1600Mhz.

i see the default setting in RPA excel had a value is :1600,800,334,200Mhz.


and i find the Formula in RPA below:

# Formula is DDR_freq = [REF/DIVR1*2*DIVF1/DIVR2*DIVF2*2/2/DIVQ] x 2


so how can i set the freq to another value : e.g.1333,1200Mhz??


and what is the  meaning in Formula variable (REF,DIVR1,DIVQ........) any doc can find??