SI570_REG_HS_N1
err = regmap_bulk_read(data->regmap, SI570_REG_HS_N1 + data->div_offset,
regmap_write(data->regmap, SI570_REG_HS_N1 + data->div_offset,
case SI570_REG_HS_N1 ... (SI570_REG_RFREQ4 + SI570_DIV_OFFSET_7PPM):