DL_GAIN_N_40DB_REG
regmap_write(priv->regmap, MT6358_ZCD_CON1, DL_GAIN_N_40DB_REG);
DL_GAIN_REG_MASK, DL_GAIN_N_40DB_REG);
regmap_write(priv->regmap, MT6358_ZCD_CON2, DL_GAIN_N_40DB_REG);
regmap_write(priv->regmap, MT6359_ZCD_CON2, DL_GAIN_N_40DB_REG);