DFLL_FREQ_REQ_SCALE_MAX
return (u64)dvco_rate * (scale_bits + 1) / DFLL_FREQ_REQ_SCALE_MAX;
req->scale_bits = DFLL_FREQ_REQ_SCALE_MAX - 1;
scale = DIV_ROUND_CLOSEST(rate / 1000 * DFLL_FREQ_REQ_SCALE_MAX,