[PATCH 6.4 006/800] dt-bindings: iio: ad7192: Add mandatory reference voltage source

Greg Kroah-Hartman
2023-07-16T19:54:01Z

From: Fabrizio Lamarque <fl.scratchpad@gmail.com>

commit c6dab7245604862d86f0b6d764919f470584d24f upstream.

Add required reference voltage (VRef) supply regulator.

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

Fixes: b581f748cce0 ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml | 5 +++++
1 file changed, 5 insertions(+)

--- a/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
@@ -47,6 +47,9 @@ properties:
avdd-supply:
description: AVdd voltage supply

+ vref-supply:
+ description: VRef voltage supply
+
adi,rejection-60-Hz-enable:
description: |
This bit enables a notch at 60 Hz when the first notch of the sinc
@@ -89,6 +92,7 @@ required:
- interrupts
- dvdd-supply
- avdd-supply
+ - vref-supply
- spi-cpol
- spi-cpha

@@ -115,6 +119,7 @@ examples:
interrupt-parent = <&gpio>;
dvdd-supply = <&dvdd>;
avdd-supply = <&avdd>;
+ vref-supply = <&vref>;

adi,refin2-pins-enable;
adi,rejection-60-Hz-enable;