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Message-ID: <20221118172407.765423-2-ciprian.regus@analog.com>
Date: Fri, 18 Nov 2022 19:24:06 +0200
From: Ciprian Regus <ciprian.regus@...log.com>
To: <jic23@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
<robh+dt@...nel.org>, <linux-iio@...r.kernel.org>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: Ciprian Regus <ciprian.regus@...log.com>
Subject: [PATCH v3 1/2] dt-bindings: iio: dac: add adi,ad5754.yaml
Add devicetree bindings documentation for the AD5754 DAC driver.
Signed-off-by: Ciprian Regus <ciprian.regus@...log.com>
---
changes in v3:
- added additionalProperties: false to patternProperties
- dropped status in the example.
- added different values for adi,output-range-microvolt in the example.
Negative values cannot be set since that will create a dt_bindings_check error.
.../bindings/iio/dac/adi,ad5754.yaml | 181 ++++++++++++++++++
1 file changed, 181 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/dac/adi,ad5754.yaml
diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5754.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5754.yaml
new file mode 100644
index 000000000000..de0f6fab82b8
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5754.yaml
@@ -0,0 +1,181 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/dac/adi,ad5754.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD5754 DAC
+
+maintainers:
+ - Ciprian Regus <ciprian.regus@...log.com>
+
+description: |
+ Bindings for the AD5754 and other chip variants digital-to-analog
+ converters.
+
+ https://www.analog.com/media/en/technical-documentation/data-sheets/AD5724_5734_5754.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad5722_5732_5752.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad5724r_5734r_5754r.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/AD5722R_5732R_5752R.pdf
+
+properties:
+ compatible:
+ enum:
+ - adi,ad5722
+ - adi,ad5732
+ - adi,ad5752
+ - adi,ad5724
+ - adi,ad5734
+ - adi,ad5754
+ - adi,ad5722r
+ - adi,ad5732r
+ - adi,ad5752r
+ - adi,ad5724r
+ - adi,ad5734r
+ - adi,ad5754r
+
+ reg:
+ maxItems: 1
+
+ spi-max-frequency:
+ maximum: 30000000
+
+ spi-cpol: true
+
+ vref-supply:
+ description:
+ The regulator to use as an external reference. If this is not provided,
+ the internal reference will be used for chips that have this feature.
+ The external reference must be 2.5V.
+
+ clr-gpios:
+ description: DAC output clear GPIO (CLR pin). If specified, it will be set
+ to high during probe, thus allowing the DAC output to be updated.
+ maxItems: 1
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+patternProperties:
+ "^channel@([0-3])$":
+ type: object
+ additionalProperties: false
+ description: Configurations for the DAC channels
+
+ properties:
+ reg:
+ description: Channel number
+ maxItems: 1
+
+ adi,output-range-microvolt:
+ description: |
+ Voltage range of a channel as <minimum, maximum>.
+ oneOf:
+ - items:
+ - const: 0
+ - enum: [5000000, 10000000, 10800000]
+ - items:
+ - const: -5000000
+ - const: 5000000
+ - items:
+ - const: -10000000
+ - const: 10000000
+ - items:
+ - const: -10800000
+ - const: 10800000
+
+ required:
+ - reg
+ - adi,output-range-microvolt
+
+allOf:
+ - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - adi,ad5722
+ - adi,ad5732
+ - adi,ad5752
+ - adi,ad5722r
+ - adi,ad5732r
+ - adi,ad5752r
+ then:
+ patternProperties:
+ "^channel@([0-3])$":
+ type: object
+ properties:
+ reg:
+ description: Channel number
+ enum: [0, 1]
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - adi,ad5724
+ - adi,ad5734
+ - adi,ad5754
+ - adi,ad5724r
+ - adi,ad5734r
+ - adi,ad5754r
+ then:
+ patternProperties:
+ "^channel@([0-3])$":
+ type: object
+ properties:
+ reg:
+ description: Channel number
+ enum: [0, 1, 2, 3]
+
+required:
+ - compatible
+ - reg
+ - spi-max-frequency
+ - spi-cpol
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ dac@0 {
+ compatible = "adi,ad5754r";
+ reg = <0>;
+ spi-max-frequency = <1000000>;
+ spi-cpol;
+
+ clr-gpios = <&gpio 25 GPIO_ACTIVE_LOW>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ channel@0 {
+ reg = <0>;
+ adi,output-range-microvolt = <0 5000000>;
+ };
+ channel@1 {
+ reg = <1>;
+ adi,output-range-microvolt = <0 10000000>;
+ };
+ channel@2 {
+ reg = <2>;
+ adi,output-range-microvolt = <0 5000000>;
+ };
+ channel@3 {
+ reg = <3>;
+ adi,output-range-microvolt = <0 10000000>;
+ };
+ };
+ };
--
2.30.2
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