RS9_REG_BCP
.max_register = RS9_REG_BCP,
ret = regmap_write(rs9->regmap, RS9_REG_BCP, 1);
regmap_reg_range(RS9_REG_VID, RS9_REG_BCP),
regmap_reg_range(RS9_REG_BCP, RS9_REG_BCP),