MCHPCOREPWM_PRESCALE
hw_prescale = readb_relaxed(mchp_core_pwm->base + MCHPCOREPWM_PRESCALE);
writel_relaxed(prescale, mchp_core_pwm->base + MCHPCOREPWM_PRESCALE);
prescale = readb_relaxed(mchp_core_pwm->base + MCHPCOREPWM_PRESCALE);