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dt-bindings: iio: ad7192: Add mandatory reference voltage source

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Add required reference voltage (VRef) supply regulator.

AD7192 requires three independent voltage sources: DVdd, AVdd and VRef
(on REFINx pin pairs).

Fixes: b581f748cc ("staging: iio: adc: ad7192: move out of staging")
Signed-off-by: Fabrizio Lamarque <fl.scratchpad@gmail.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Cc: <Stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20230530075311.400686-5-fl.scratchpad@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Fabrizio Lamarque 2023-05-30 09:53:10 +02:00 committed by Jonathan Cameron
parent f7d9e21dd2
commit c6dab72456
1 changed files with 5 additions and 0 deletions
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5
Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
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@ -47,6 +47,9 @@ properties:
avdd-supply: avdd-supply:
description: AVdd voltage supply description: AVdd voltage supply
vref-supply:
description: VRef voltage supply
adi,rejection-60-Hz-enable: adi,rejection-60-Hz-enable:
description: | description: |
This bit enables a notch at 60 Hz when the first notch of the sinc This bit enables a notch at 60 Hz when the first notch of the sinc
@ -89,6 +92,7 @@ required:
- interrupts - interrupts
- dvdd-supply - dvdd-supply
- avdd-supply - avdd-supply
- vref-supply
- spi-cpol - spi-cpol
- spi-cpha - spi-cpha
@ -115,6 +119,7 @@ examples:
interrupt-parent = <&gpio>; interrupt-parent = <&gpio>;
dvdd-supply = <&dvdd>; dvdd-supply = <&dvdd>;
avdd-supply = <&avdd>; avdd-supply = <&avdd>;
vref-supply = <&vref>;
adi,refin2-pins-enable; adi,refin2-pins-enable;
adi,rejection-60-Hz-enable; adi,rejection-60-Hz-enable;