Commit c444e956 authored Jun 25, 2019 by Mircea Caprioru Committed by Jonathan Cameron Jun 26, 2019

dt-bindings: iio: adc: Add buffered input property

This patch adds the buffered mode device tree property for positive and
negative inputs. Each option can be enabled independently.

In buffered mode, the input channel feeds into a high impedance input stage
of the buffer amplifier. Therefore, the input can tolerate significant
source impedances and is tailored for direct connection to external
resistive type sensors such as strain gages or RTDs.

Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

parent 26ae15e6

Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml

+11 −0

Original line number	Diff line number	Diff line
		@@ -100,6 +100,14 @@ patternProperties:
		description: see Documentation/devicetree/bindings/iio/adc/adc.txt
		type: boolean

		adi,buffered-positive:
		description: Enable buffered mode for positive input.
		type: boolean

		adi,buffered-negative:
		description: Enable buffered mode for negative input.
		type: boolean

		required:
		- reg
		- diff-channels
		@@ -123,6 +131,7 @@ examples:
		reg = <0>;
		diff-channels = <0 1>;
		adi,reference-select = <0>;
		adi,buffered-positive;
		};

		channel@1 {
		@@ -130,6 +139,8 @@ examples:
		bipolar;
		diff-channels = <2 3>;
		adi,reference-select = <0>;
		adi,buffered-positive;
		adi,buffered-negative;
		};

		channel@2 {

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