APMU_AUDIO_CLK
return regmap_set_bits(ctrl->base, APMU_AUDIO_CLK, AUDIO_ULCX_ENABLE);
return regmap_clear_bits(ctrl->base, APMU_AUDIO_CLK, AUDIO_ULCX_ENABLE);
return regmap_test_bits(ctrl->base, APMU_AUDIO_CLK, AUDIO_ULCX_ENABLE);