RV3032_HFD_STEP
return rate * RV3032_HFD_STEP;
if (req->rate < RV3032_HFD_STEP)
hfd = DIV_ROUND_CLOSEST(req->rate, RV3032_HFD_STEP);
req->rate = RV3032_HFD_STEP * clamp(hfd, 0, 8192);
hfd = DIV_ROUND_CLOSEST(rate, RV3032_HFD_STEP);