NAU8825_REG_HSVOL_CTRL
SOC_DOUBLE_TLV("Headphone Volume", NAU8825_REG_HSVOL_CTRL,
{ NAU8825_REG_HSVOL_CTRL, 0x0 },
{ NAU8825_REG_HSVOL_CTRL, 0 },
regmap_update_bits(nau8825->regmap, NAU8825_REG_HSVOL_CTRL,
regmap_update_bits(nau8825->regmap, NAU8825_REG_HSVOL_CTRL,
NAU8825_REG_HSVOL_CTRL) {
index = nau8825_xtalk_baktab_index_by_reg(NAU8825_REG_HSVOL_CTRL);