Unverified Commit 24e0b04d authored by Arnaud Ferraris's avatar Arnaud Ferraris Committed by Mark Brown
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ASoC: dt-bindings: sun50i-codec: Add binding for internal bias 



In order to properly bias headset microphones, there should be a pull-up
resistor between pins HBIAS and MIC2P. This can be an external resistor,
but the codec also provides an internal 2.2K resistor which is enabled
by a register.

This patch adds a device-tree property to the sun50i-codec-analog driver
to take advantage of this feature.

Signed-off-by: default avatarArnaud Ferraris <arnaud.ferraris@collabora.com>
[Samuel: split binding and implementation patches]
Signed-off-by: default avatarSamuel Holland <samuel@sholland.org>
Link: https://lore.kernel.org/r/20220621035452.60272-2-samuel@sholland.org


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 658e9595

Documentation/devicetree/bindings/sound/allwinner,sun50i-a64-codec-analog.yaml

+5 −0
Original line number Diff line number Diff line
@@ -21,6 +21,11 @@ properties: 
    description:

      Regulator for the headphone amplifier



  allwinner,internal-bias-resistor:

    description:

      Enable the internal 2.2K bias resistor between HBIAS and MICDET pins

    type: boolean



required:

  - compatible

  - reg