add ad3530r driver

Documentation/devicetree/bindings/iio/dac/adi,ad3530r.yaml

@@ -0,0 +1,88 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/dac/adi,ad3530r.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD3530R DAC
+
+maintainers:
+  - Kim Seer Paller <[email protected]>
+
+description: |
+  The AD3530R/AD3530 are low power, 8-channel, 16-bit, buffered voltage output,
+  DACs that include a 2.5 V internal reference (disabled by default), and a
+  gain bit field, resulting in a full-scale output span of 2.5 V (gain
+  = 1) or 5 V (gain = 2) for a reference voltage of 2.5 V.
+
+properties:
+  compatible:
+    enum:
+      - adi,ad3530r
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 50000000
+
+  vcc-supply:
+    description: Analog Supply Voltage Input.
+
+  ref-supply:
+    description:
+      Reference Input/Output. The voltage at the REF pin sets the full-scale
+      range of all channels. If not provided the internal reference is used and
+      also provided on the VREF pin.
+
+  reset-gpios:
+    description:
+      Active low signal that is falling edge sensitive. When it is deasserted,
+      the digital core initialization is performed and all DAC registers except
+      the Interface Configuration A register are reset to their default values.
+    maxItems: 1
+
+  ldac-gpios:
+    description:
+      LDAC pin to be used as a hardware trigger to update the DAC channels. If
+      not present, the DAC channels are updated by Software LDAC.
+    maxItems: 1
+
+  adi,double-output-range:
+    description:
+      Configure the output range for all channels. If the property is present,
+      the output will range from 0V to 2Vref. If the property is not
+      present, the output will range from 0V to Vref.
+    type: boolean
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - spi-max-frequency
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+additionalProperties: false
+
+examples:
+  - |
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        dac@0 {
+            compatible = "adi,ad3530r";
+            reg = <0>;
+            spi-max-frequency = <1000000>;
+
+            vcc-supply = <&vcc>;
+            ldac-gpios = <&gpio 17 0>;
+        };
+    };
+...

MAINTAINERS

@@ -1168,6 +1168,14 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git
 F:	drivers/net/amt.c
 
+ANALOG DEVICES INC AD3530R DRIVER
+M:	Kim Seer Paller <[email protected]>
+L:	[email protected]
+S:	Supported
+W:	https://ez.analog.com/linux-software-drivers
+F:	Documentation/devicetree/bindings/iio/dac/adi,ad3530r.yaml
+F:	drivers/iio/dac/ad3530r.c
+
 ANALOG DEVICES INC AD3552R DRIVER
 M:	Nuno Sá <[email protected]>
 L:	[email protected]

drivers/iio/Kconfig.adi

@@ -206,4 +206,5 @@ config IIO_ALL_ADI_DRIVERS
 	imply LTC2664
 	imply AD8460
 	imply MAX77541_ADC
+	imply AD3530R
 

drivers/iio/dac/Kconfig

@@ -6,6 +6,16 @@
 
 menu "Digital to analog converters"
 
+config AD3530R
+	tristate "Analog Devices AD3530R DAC driver"
+	depends on SPI_MASTER
+	help
+	  Say yes here to build support for Analog Devices AD3530R
+	  Digital to Analog Converter.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad3530r.
+
 config AD3552R
 	tristate "Analog Devices AD3552R DAC driver"
 	depends on SPI_MASTER

drivers/iio/dac/Makefile

@@ -4,6 +4,7 @@
 #
 
 # When adding new entries keep the list in alphabetical order
+obj-$(CONFIG_AD3530R) += ad3530r.o
 obj-$(CONFIG_AD3552R) += ad3552r.o
 obj-$(CONFIG_AD5270) += ad5270.o
 obj-$(CONFIG_AD5360) += ad5360.o