WM8900_REG_SIDETONE
WM8900_REG_SIDETONE, 2, sidetone_txt);
WM8900_REG_SIDETONE, 0, sidetone_txt);
SOC_SINGLE_TLV("Left ADC Sidetone Volume", WM8900_REG_SIDETONE, 9, 12, 0,
SOC_SINGLE_TLV("Right ADC Sidetone Volume", WM8900_REG_SIDETONE, 5, 12, 0,