| Message ID | 20190624080845.18537-5-mircea.caprioru@analog.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [V3,1/5] iio: adc: ad7124: Remove input number limitation | expand |
On Mon, Jun 24, 2019 at 2:09 AM Mircea Caprioru <mircea.caprioru@analog.com> wrote: > > 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> > --- > > Changelog v3: > - added this separate commit for adi,buffered-positive and negative > properties > > .../devicetree/bindings/iio/adc/adi,ad7124.yaml | 11 +++++++++++ > 1 file changed, 11 insertions(+) Reviewed-by: Rob Herring <robh@kernel.org>
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 {
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> --- Changelog v3: - added this separate commit for adi,buffered-positive and negative properties .../devicetree/bindings/iio/adc/adi,ad7124.yaml | 11 +++++++++++ 1 file changed, 11 insertions(+)