add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/Documentation/devicetree/bindings/sound/tlv320aic31xx.txt
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@@ -29,6 +29,11 @@
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         3 or MICBIAS_AVDD - MICBIAS output is connected to AVDD
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 	If this node is not mentioned or if the value is unknown, then
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 	micbias	is set to 2.0V.
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+- ai31xx-ocmv - output common-mode voltage setting
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+        0 - 1.35V,
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+        1 - 1.5V,
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+        2 - 1.65V,
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+        3 - 1.8V
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 Deprecated properties:
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