The delay cells of some SoCs may have less delay per one cell, for such SoCs, user could set the start delay cell point to bypass the first a few meaningless tuning commands. Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>