From: Alexandru Tachici <alexandru.tachici@analog.com>
To: <linux-iio@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: <jic23@kernel.org>,
Alexandru Tachici <alexandru.tachici@analog.com>,
Mircea Caprioru <mircea.caprioru@analog.com>
Subject: [PATCH v4 2/2] dt-bindings: iio: dac: Add docs for AD5770R DAC
Date: Tue, 18 Feb 2020 14:10:31 +0200 [thread overview]
Message-ID: <20200218121031.27233-3-alexandru.tachici@analog.com> (raw)
In-Reply-To: <20200218121031.27233-1-alexandru.tachici@analog.com>
Adding dt-bindings documentation for AD5770R DAC.
Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com>
Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com>
---
.../bindings/iio/dac/adi,ad5770r.yaml | 185 ++++++++++++++++++
1 file changed, 185 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/dac/adi,ad5770r.yaml
diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5770r.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5770r.yaml
new file mode 100644
index 000000000000..13d6b5ff479d
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5770r.yaml
@@ -0,0 +1,185 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2020 Analog Devices Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/bindings/iio/adc/adi,ad5770r.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD5770R DAC device driver
+
+maintainers:
+ - Mircea Caprioru <mircea.caprioru@analog.com>
+
+description: |
+ Bindings for the Analog Devices AD5770R current DAC device. Datasheet can be
+ found here:
+ https://www.analog.com/media/en/technical-documentation/data-sheets/AD5770R.pdf
+
+properties:
+ compatible:
+ enum:
+ - adi,ad5770r
+
+ reg:
+ maxItems: 1
+
+ avdd-supply:
+ description:
+ AVdd voltage supply. Represents two different supplies in the datasheet
+ that are in fact the same.
+
+ iovdd-supply:
+ description:
+ Voltage supply for the chip interface.
+
+ vref-supply:
+ description: Specify the voltage of the external reference used.
+ Available reference options are 1.25 V or 2.5 V. If no
+ external reference declared then the device will use the
+ internal reference of 1.25 V.
+
+ adi,external-resistor:
+ description: Specify if an external 2.5k ohm resistor is used. If not
+ specified the device will use an internal 2.5k ohm resistor.
+ The precision resistor is used for reference current generation.
+ type: boolean
+
+ reset-gpios:
+ description: GPIO spec for the RESET pin. If specified, it will be
+ asserted during driver probe.
+ maxItems: 1
+
+ channel0:
+ description: Represents an external channel which are
+ connected to the DAC. Channel 0 can act both as a current
+ source and sink.
+ type: object
+
+ properties:
+ num:
+ description: This represents the channel number.
+ items:
+ const: 0
+
+ adi,range-microamp:
+ description: Output range of the channel.
+ oneOf:
+ - $ref: /schemas/types.yaml#/definitions/int32-array
+ - items:
+ - enum: [0 300000]
+ - enum: [-60000 0]
+ - enum: [-60000 300000]
+
+ channel1:
+ description: Represents an external channel which are
+ connected to the DAC.
+ type: object
+
+ properties:
+ num:
+ description: This represents the channel number.
+ items:
+ const: 1
+
+ adi,range-microamp:
+ description: Output range of the channel.
+ oneOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32-array
+ - items:
+ - enum: [0 140000]
+ - enum: [0 250000]
+
+ channel2:
+ description: Represents an external channel which are
+ connected to the DAC.
+ type: object
+
+ properties:
+ num:
+ description: This represents the channel number.
+ items:
+ const: 2
+
+ adi,range-microamp:
+ description: Output range of the channel.
+ oneOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32-array
+ - items:
+ - enum: [0 140000]
+ - enum: [0 250000]
+
+patternProperties:
+ "^channel@([3-5])$":
+ type: object
+ description: Represents the external channels which are connected to the DAC.
+ properties:
+ num:
+ description: This represents the channel number.
+ items:
+ minimum: 3
+ maximum: 5
+
+ adi,range-microamp:
+ description: Output range of the channel.
+ oneOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32-array
+ - items:
+ - enum: [0 45000]
+ - enum: [0 100000]
+
+required:
+- reg
+- diff-channels
+- channel0
+- channel1
+- channel2
+- channel3
+- channel4
+- channel5
+
+examples:
+ - |
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ad5770r@0 {
+ compatible = "ad5770r";
+ reg = <0>;
+ spi-max-frequency = <1000000>;
+ vref-supply = <&vref>;
+ adi,external-resistor;
+ reset-gpios = <&gpio 22 0>;
+
+ channel@0 {
+ num = <0>;
+ adi,range-microamp = <(-60000) 300000>;
+ };
+
+ channel@1 {
+ num = <1>;
+ adi,range-microamp = <0 140000>;
+ };
+
+ channel@2 {
+ num = <2>;
+ adi,range-microamp = <0 55000>;
+ };
+
+ channel@3 {
+ num = <3>;
+ adi,range-microamp = <0 45000>;
+ };
+
+ channel@4 {
+ num = <4>;
+ adi,range-microamp = <0 45000>;
+ };
+
+ channel@5 {
+ num = <5>;
+ adi,range-microamp = <0 45000>;
+ };
+ };
+ };
+...
--
2.20.1
next prev parent reply other threads:[~2020-02-18 12:11 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-18 12:10 [PATCH v4 0/2] iio: dac: AD5770R: Add support Alexandru Tachici
2020-02-18 12:10 ` [PATCH v4 1/2] iio: dac: ad5770r: Add AD5770R support Alexandru Tachici
2020-02-21 15:05 ` Jonathan Cameron
2020-03-21 21:09 ` Andy Shevchenko
2020-03-22 9:17 ` Ardelean, Alexandru
2020-03-22 22:19 ` andriy.shevchenko
2020-02-18 12:10 ` Alexandru Tachici [this message]
2020-02-21 15:07 ` [PATCH v4 2/2] dt-bindings: iio: dac: Add docs for AD5770R DAC Jonathan Cameron
2020-03-20 0:49 ` Rob Herring
2020-03-21 10:38 ` Jonathan Cameron
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