[PATCH 02/22] dt-bindings: iio: dac: ad5696: add reset/ldac/gain gpio support

Rodrigo Alencar via B4 Relay
2026-04-22T14:46:24Z

From: Rodrigo Alencar <rodrigo.alencar@analog.com>

Add GPIO property for RESET, LDAC and GAIN pin. RESET is active-low, LDAC
is used to load DAC channels with values from input registers and GAIN
can double the voltage in output channels. The gain-gpios property is
not available to all supported parts.

Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
---
.../devicetree/bindings/iio/dac/adi,ad5696.yaml | 34 +++++++++++++++++++++-
1 file changed, 33 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5696.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5696.yaml
index ed79323bfc93..f286e5072abc 100644
--- a/Documentation/devicetree/bindings/iio/dac/adi,ad5696.yaml
+++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5696.yaml
@@ -42,14 +42,45 @@ properties:
description: |
The regulator supply for DAC reference voltage.

+ reset-gpios:
+ description: Active-low RESET pin to reset the device.
+ maxItems: 1
+
+ ldac-gpios:
+ description:
+ Active-low LDAC pin used to asynchronously update the DAC channels.
+ maxItems: 1
+
+ gain-gpios:
+ description:
+ GAIN pin that sets a multiplier for the DAC output voltage. When high,
+ the DAC output voltage is multiplied by 2, otherwise it is unchanged.
+ maxItems: 1
+
required:
- compatible
- reg

-additionalProperties: false
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ anyOf:
+ - const: adi,ad5311r
+ - const: adi,ad5691r
+ - const: adi,ad5692r
+ - const: adi,ad5693
+ - const: adi,ad5693r
+ then:
+ properties:
+ gain-gpios: false
+
+unevaluatedProperties: false

examples:
- |
+ #include <dt-bindings/gpio/gpio.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
@@ -58,6 +89,7 @@ examples:
compatible = "adi,ad5696";
reg = <0>;
vcc-supply = <&dac_vref>;
+ ldac-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
};
};
...

--
2.43.0