[PATCH v2 1/2] dt-bindings: iio: dac: Add max22007

[Janani Sunil <janani.sunil@analog.com>]

Devicetree bindings for MAX22007 4-channel 12-bit DAC that drives a
voltage or current output on each channel

Signed-off-by: Janani Sunil <janani.sunil@analog.com>
---
 .../devicetree/bindings/iio/dac/adi,max22007.yaml  | 136 +++++++++++++++++++++
 MAINTAINERS                                        |   7 ++
 2 files changed, 143 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/dac/adi,max22007.yaml b/Documentation/devicetree/bindings/iio/dac/adi,max22007.yaml
new file mode 100644
index 000000000000..52c7c3217f90
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/dac/adi,max22007.yaml
@@ -0,0 +1,136 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/dac/adi,max22007.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices MAX22007 DAC
+
+maintainers:
+  - Janani Sunil <janani.sunil@analog.com>
+
+description:
+  The MAX22007 is a quad-channel, 12-bit digital-to-analog converter (DAC)
+  with integrated precision output amplifiers and current output capability.
+  Each channel can be independently configured for voltage or current output.
+  Datasheet available at https://www.analog.com/en/products/max22007.html
+
+$ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+  compatible:
+    const: adi,max22007
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 500000
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
+  vdd-supply:
+    description: Low-Voltage Power Supply from +2.7V to +5.5V.
+
+  hvdd-supply:
+    description:
+      Positive High-Voltage Power Supply from +8V to (HVSS +24V) for
+      the Output Channels.
+
+  hvss-supply:
+    description:
+      Optional Negative High-Voltage Power Supply from -2V to 0V for the Output
+      Channels. For most applications HVSS can be connected to GND (0V), but for
+      applications requiring output down to true 0V or 0mA, connect to a -2V supply.
+
+  reset-gpios:
+    maxItems: 1
+    description:
+      Active low GPIO used for hardware reset.
+
+patternProperties:
+  "^channel@[0-3]$":
+    $ref: /schemas/iio/dac/dac.yaml#
+    type: object
+    description:
+      Represents the external channels which are connected to the DAC.
+
+    properties:
+      reg:
+        description: Channel number
+        items:
+          minimum: 0
+          maximum: 3
+
+      adi,ch-func:
+        description:
+          Channel output type. Use CH_FUNC_VOLTAGE_OUTPUT for voltage
+          output or CH_FUNC_CURRENT_OUTPUT for current output.
+        $ref: /schemas/types.yaml#/definitions/uint32
+        enum: [1, 2]
+
+    required:
+      - reg
+      - adi,ch-func
+
+    unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - vdd-supply
+  - hvdd-supply
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/iio/addac/adi,ad74413r.h>
+
+    vdd_reg: regulator-vdd {
+        compatible = "regulator-fixed";
+        regulator-name = "vdd-3v3";
+        regulator-min-microvolt = <3300000>;
+        regulator-max-microvolt = <3300000>;
+        regulator-always-on;
+    };
+
+    hvdd_reg: regulator-hvdd {
+        compatible = "regulator-fixed";
+        regulator-name = "hvdd-12v";
+        regulator-min-microvolt = <12000000>;
+        regulator-max-microvolt = <12000000>;
+        regulator-always-on;
+    };
+
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        dac@0 {
+            compatible = "adi,max22007";
+            reg = <0>;
+            spi-max-frequency = <500000>;
+            reset-gpios = <&gpio 19 GPIO_ACTIVE_LOW>;
+            vdd-supply = <&vdd_reg>;
+            hvdd-supply = <&hvdd_reg>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            channel@0 {
+                reg = <0>;
+                adi,ch-func = <CH_FUNC_VOLTAGE_OUTPUT>;
+            };
+
+            channel@1 {
+                reg = <1>;
+                adi,ch-func = <CH_FUNC_CURRENT_OUTPUT>;
+            };
+        };
+    };
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 29340394ac9d..e1addbd21562 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1593,6 +1593,13 @@ W:	https://ez.analog.com/linux-software-drivers
 F:	Documentation/devicetree/bindings/iio/dac/adi,ad9739a.yaml
 F:	drivers/iio/dac/ad9739a.c
 
+ANALOG DEVICES INC MAX22007 DRIVER
+M:	Janani Sunil <janani.sunil@analog.com>
+L:	linux-iio@vger.kernel.org
+S:	Supported
+W:	https://ez.analog.com/linux-software-drivers
+F:	Documentation/devicetree/bindings/iio/dac/adi,max22007.yaml
+
 ANALOG DEVICES INC ADA4250 DRIVER
 M:	Antoniu Miclaus <antoniu.miclaus@analog.com>
 L:	linux-iio@vger.kernel.org

-- 
2.43.0