As my understanding PLL2 (system PLL) 528Mhz only supports the spread spectrum in i.MX6S.
Does the PLL2_PFDs (PFD0=352MHz, PFD1=594MHz, PFD2=396MHz) also should support the spread spectrum ?
PLL2_PFD is deriverd form PLL2 according to following formula.
PLL2_PFD = PLL2 * (18/N)
(N is from 12 to 35)
According to additional PLL2_PFD, the function of the spread spectrum fades away ?