NAU8540_REG_MIC_BIAS
{NAU8540_REG_MIC_BIAS, 0x0004},
SND_SOC_DAPM_SUPPLY("MICBIAS2", NAU8540_REG_MIC_BIAS, 11, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("MICBIAS1", NAU8540_REG_MIC_BIAS, 10, 0, NULL, 0),
regmap_update_bits(regmap, NAU8540_REG_MIC_BIAS,