[PATCH v7 3/7] dt-bindings: iio: adc: ad7380: add pseudo-differential parts

Julien Stephan
2024-05-28T14:20:41Z

From: David Lechner <dlechner@baylibre.com>

Adding AD7383 and AD7384 compatible parts that are pseudo-differential.

Pseudo-differential require common mode voltage supplies, so add them
conditionally

Signed-off-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Julien Stephan <jstephan@baylibre.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
---
.../devicetree/bindings/iio/adc/adi,ad7380.yaml | 32 ++++++++++++++++++++++
1 file changed, 32 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml
index 5e1ee0ebe0a2..de3d28a021ae 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml
@@ -13,6 +13,8 @@ maintainers:
description: |
* https://www.analog.com/en/products/ad7380.html
* https://www.analog.com/en/products/ad7381.html
+ * https://www.analog.com/en/products/ad7383.html
+ * https://www.analog.com/en/products/ad7384.html

$ref: /schemas/spi/spi-peripheral-props.yaml#

@@ -21,6 +23,8 @@ properties:
enum:
- adi,ad7380
- adi,ad7381
+ - adi,ad7383
+ - adi,ad7384

reg:
maxItems: 1
@@ -42,6 +46,16 @@ properties:
A 2.5V to 3.3V supply for the external reference voltage. When omitted,
the internal 2.5V reference is used.

+ aina-supply:
+ description:
+ The common mode voltage supply for the AINA- pin on pseudo-differential
+ chips.
+
+ ainb-supply:
+ description:
+ The common mode voltage supply for the AINB- pin on pseudo-differential
+ chips.
+
interrupts:
description:
When the device is using 1-wire mode, this property is used to optionally
@@ -56,6 +70,24 @@ required:

unevaluatedProperties: false

+allOf:
+ # pseudo-differential chips require common mode voltage supplies,
+ # true differential chips don't use them
+ - if:
+ properties:
+ compatible:
+ enum:
+ - adi,ad7383
+ - adi,ad7384
+ then:
+ required:
+ - aina-supply
+ - ainb-supply
+ else:
+ properties:
+ aina-supply: false
+ ainb-supply: false
+
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>

--
2.44.0