RT298_POWER_CTRL2
RT298_POWER_CTRL2, 0x4, 0x4);
SND_SOC_DAPM_SUPPLY_S("BG_MBIAS", 1, RT298_POWER_CTRL2,
SND_SOC_DAPM_SUPPLY_S("LDO1", 1, RT298_POWER_CTRL2,
SND_SOC_DAPM_SUPPLY_S("LDO2", 1, RT298_POWER_CTRL2,
SND_SOC_DAPM_SUPPLY_S("VREF1", 1, RT298_POWER_CTRL2,