RT5120_BUCK1_MINUV
if (uV < RT5120_BUCK1_MINUV || uV > RT5120_BUCK1_MAXUV)
sel = (uV - RT5120_BUCK1_MINUV) / RT5120_BUCK1_STEPUV;
desc->min_uV = RT5120_BUCK1_MINUV;