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,ad5686.yaml | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5686.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5686.yaml index cb035741529f..543ee181f7b3 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,ad5686.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5686.yaml @@ -43,17 +43,46 @@ properties: vcc-supply: description: If not supplied the internal reference is used. + 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 allOf: - $ref: /schemas/spi/spi-peripheral-props.yaml# + - if: + properties: + compatible: + contains: + anyOf: + - const: adi,ad5310r + - const: adi,ad5681r + - const: adi,ad5682r + - const: adi,ad5683 + - const: adi,ad5683r + then: + properties: + gain-gpios: false unevaluatedProperties: false examples: - | + #include <dt-bindings/gpio/gpio.h> spi { #address-cells = <1>; #size-cells = <0>; @@ -61,6 +90,8 @@ examples: reg = <0>; compatible = "adi,ad5310r"; vcc-supply = <&dac_vref0>; + reset-gpios = <&gpio0 0 GPIO_ACTIVE_LOW>; + ldac-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>; }; }; ... -- 2.43.0
