iio: dac: add ad5706r (part 1)

Documentation/devicetree/bindings/iio/dac/adi,ad5706r.yaml

@@ -0,0 +1,105 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/dac/adi,ad5706r.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD5706R 4-Channel Current Output DAC
+
+maintainers:
+  - Alexis Czezar Torreno <alexisczezar.torreno@analog.com>
+
+description: |
+  The AD5706R is a 4-channel, 16-bit resolution, current output
+  digital-to-analog converter (DAC) with programmable output current
+  ranges (50mA, 150mA, 200mA, 300mA), an integrated 2.5V voltage
+  reference, and load DAC, A/B toggle, and dither functions.
+
+  Datasheet:
+    https://www.analog.com/en/products/ad5706r.html
+
+properties:
+  compatible:
+    enum:
+      - adi,ad5706r
+
+  reg:
+    maxItems: 1
+
+  avdd-supply:
+    description: Analog power supply (2.9V to 3.6V).
+
+  iovdd-supply:
+    description: Logic power supply (1.14V to 1.89V).
+
+  pvdd0-supply:
+    description: Power supply for IDAC0 channel (1.65V to AVDD).
+
+  pvdd1-supply:
+    description: Power supply for IDAC1 channel (1.65V to AVDD).
+
+  pvdd2-supply:
+    description: Power supply for IDAC2 channel (1.65V to AVDD).
+
+  pvdd3-supply:
+    description: Power supply for IDAC3 channel (1.65V to AVDD).
+
+  vref-supply:
+    description:
+      Optional external 2.5V voltage reference. If not provided, the
+      internal 2.5V reference is used.
+
+  pwms:
+    maxItems: 1
+    description:
+      Optional PWM connected to the LDAC/TGP/DCK pin for hardware
+      triggered DAC updates, toggle, or dither clock generation.
+
+  reset-gpios:
+    maxItems: 1
+    description:
+      GPIO connected to the active low RESET pin. If not provided,
+      software reset is used.
+
+  enable-gpios:
+    maxItems: 1
+    description:
+      GPIO connected to the active low OUT_EN pin. Controls whether
+      the current outputs are enabled or in high-Z/ground state.
+
+required:
+  - compatible
+  - reg
+  - avdd-supply
+  - iovdd-supply
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        dac@0 {
+            compatible = "adi,ad5706r";
+            reg = <0>;
+            avdd-supply = <&avdd>;
+            iovdd-supply = <&iovdd>;
+            pvdd0-supply = <&pvdd>;
+            pvdd1-supply = <&pvdd>;
+            pvdd2-supply = <&pvdd>;
+            pvdd3-supply = <&pvdd>;
+            vref-supply = <&vref>;
+            spi-max-frequency = <50000000>;
+            pwms = <&pwm0 0 1000000 0>;
+            reset-gpios = <&gpio0 10 GPIO_ACTIVE_LOW>;
+            enable-gpios = <&gpio0 12 GPIO_ACTIVE_LOW>;
+        };
+    };
+...

MAINTAINERS

@@ -1361,6 +1361,14 @@ F:	Documentation/iio/ad4695.rst
 F:	drivers/iio/adc/ad4695.c
 F:	include/dt-bindings/iio/adc/adc/adi,ad4695.h
 
+ANALOG DEVICES INC AD5706R DRIVER
+M:	Alexis Czezar Torreno <alexisczezar.torreno@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,ad5706r.yaml
+F:	drivers/iio/dac/ad5706r.c
+
 ANALOG DEVICES INC AD7091R DRIVER
 M:	Marcelo Schmitt <marcelo.schmitt@analog.com>
 L:	linux-iio@vger.kernel.org

drivers/iio/Kconfig.adi

@@ -110,6 +110,7 @@ config IIO_ALL_ADI_DRIVERS
 	imply AD5592R_BASE
 	imply AD5592R
 	imply AD5593R
+	imply AD5706R
 	imply AD5755
 	imply AD5758
 	imply AD5761

drivers/iio/dac/Kconfig

@@ -173,6 +173,17 @@ config AD5624R_SPI
 	  Say yes here to build support for Analog Devices AD5624R, AD5644R and
 	  AD5664R converters (DAC). This driver uses the common SPI interface.
 
+config AD5706R
+	tristate "Analog Devices AD5706R DAC driver"
+	depends on SPI
+	select REGMAP
+	help
+	  Say yes here to build support for Analog Devices AD5706R 4-channel,
+	  16-bit current output DAC.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad5706r.
+
 config AD9739A
 	tristate "Analog Devices AD9739A RF DAC spi driver"
 	depends on SPI

drivers/iio/dac/Makefile

@@ -20,6 +20,7 @@ obj-$(CONFIG_AD5449) += ad5449.o
 obj-$(CONFIG_AD5592R_BASE) += ad5592r-base.o
 obj-$(CONFIG_AD5592R) += ad5592r.o
 obj-$(CONFIG_AD5593R) += ad5593r.o
+obj-$(CONFIG_AD5706R) += ad5706r.o
 obj-$(CONFIG_AD5755) += ad5755.o
 obj-$(CONFIG_AD5758) += ad5758.o
 obj-$(CONFIG_AD5761) += ad5761.o