From c444e956a26115e605b4a345a39da294576f8d69 Mon Sep 17 00:00:00 2001 From: Mircea Caprioru Date: Tue, 25 Jun 2019 11:11:28 +0300 Subject: 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 Reviewed-by: Rob Herring Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml') diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml index 1b3d84d08609..cf494a08b837 100644 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml @@ -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 { -- cgit