From: Rodrigo Alencar <[email protected]> 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 <[email protected]> --- .../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
