v2:
- Documentation: Add dmic_sel-gpios optional prop for two DMICs.
- dmic codec driver: 
  - "dmic_sel-gpios" property is used for a mixer control to switch
     the dmic signal source between the Front and Rear Dmic.

Thanks for the review!

Ajye Huang (2):
  ASoC: dt-bindings: Document dmic_sel-gpios optional prop for two DMICs
    case
  ASoC: dmic: Add optional dmic selection

 .../devicetree/bindings/sound/dmic-codec.yaml |  5 ++
 sound/soc/codecs/dmic.c                       | 52 +++++++++++++++++++
 2 files changed, 57 insertions(+)

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2.25.1