NAU8825_CLK_INTERNAL
nau8825_configure_sysclk(nau8825, NAU8825_CLK_INTERNAL, 0);
case NAU8825_CLK_INTERNAL:
nau8825_configure_sysclk(nau8825, NAU8825_CLK_INTERNAL, 0);
NAU8825_CLK_INTERNAL, 0);
ret = snd_soc_dai_set_sysclk(codec_dai, NAU8825_CLK_INTERNAL, 0, SND_SOC_CLOCK_IN);