modify sin led gpio

hc

2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e

 kernel/Documentation/devicetree/bindings/iio/iio-bindings.txt
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@@ -9,7 +9,7 @@
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 output on a device. The length of an IIO specifier is defined by the
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 value of a #io-channel-cells property in the IIO provider node.
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-[1] http://marc.info/?l=linux-iio&m=135902119507483&w=2
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+[1] https://marc.info/?l=linux-iio&m=135902119507483&w=2
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 ==IIO providers==
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@@ -18,12 +18,17 @@
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 		   with a single IIO output and 1 for nodes with multiple
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 		   IIO outputs.
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+Optional properties:
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+label:		   A symbolic name for the device.
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+
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+
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 Example for a simple configuration with no trigger:
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 	adc: voltage-sensor@35 {
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 		compatible = "maxim,max1139";
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 		reg = <0x35>;
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 		#io-channel-cells = <1>;
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+		label = "voltage_feedback_group1";
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 	};
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 Example for a configuration with trigger: