AD7192 driver new features and devicetrees

Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml

@@ -21,8 +21,15 @@ properties:
       - adi,ad7190
       - adi,ad7192
       - adi,ad7193
+      - adi,ad7194
       - adi,ad7195
 
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
   reg:
     maxItems: 1
 
@@ -32,21 +39,39 @@ properties:
 
   clocks:
     maxItems: 1
-    description: phandle to the master clock (mclk)
+    description:
+      Optionally, either a crystal can be attached externally between MCLK1 and
+      MCLK2 pins, or an external CMOS-compatible clock can drive the MCLK2
+      pin. If absent, internal 4.92MHz clock is used, which can be made
+      available on MCLK2 pin.
 
   clock-names:
-    items:
-      - const: mclk
+    enum:
+      - xtal
+      - mclk
+
+  "#clock-cells":
+    const: 0
+    description:
+      If present when internal clock is used, configured as clock provider.
 
   interrupts:
     maxItems: 1
 
+  aincom-supply:
+    description: |
+      AINCOM voltage supply. Analog inputs AINx are referenced to this input
+      when configured for pseudo-differential operation.
+
   dvdd-supply:
     description: DVdd voltage supply
 
   avdd-supply:
     description: AVdd voltage supply
 
+  vref-supply:
+    description: VRef voltage supply
+
   adi,rejection-60-Hz-enable:
     description: |
       This bit enables a notch at 60 Hz when the first notch of the sinc
@@ -81,19 +106,77 @@ properties:
     description: see Documentation/devicetree/bindings/iio/adc/adc.yaml
     type: boolean
 
+patternProperties:
+  "^channel@[0-9a-f]+$":
+    type: object
+    $ref: adc.yaml
+    unevaluatedProperties: false
+
+    properties:
+      reg:
+        description: The channel index.
+        minimum: 0
+        maximum: 271
+
+      diff-channels:
+        description:
+          Both inputs can be connected to pins AIN1 to AIN16 by choosing the
+          appropriate value from 1 to 16.
+        items:
+          minimum: 1
+          maximum: 16
+
+      single-channel:
+        description:
+          Positive input can be connected to pins AIN1 to AIN16 by choosing the
+          appropriate value from 1 to 16. Negative input is connected to AINCOM.
+        items:
+          minimum: 1
+          maximum: 16
+
+    oneOf:
+      - required:
+          - reg
+          - diff-channels
+      - required:
+          - reg
+          - single-channel
+
 required:
   - compatible
   - reg
-  - clocks
-  - clock-names
   - interrupts
   - dvdd-supply
   - avdd-supply
+  - vref-supply
   - spi-cpol
   - spi-cpha
 
 allOf:
   - $ref: /schemas/spi/spi-peripheral-props.yaml#
+  - if:
+      properties:
+        compatible:
+          enum:
+            - adi,ad7190
+            - adi,ad7192
+            - adi,ad7193
+            - adi,ad7195
+    then:
+      patternProperties:
+        "^channel@[0-9a-f]+$": false
+  - if:
+      anyOf:
+        - required:
+            - clocks
+        - required:
+            - clock-names
+    then:
+      properties:
+        "#clock-cells": false
+      required:
+        - clocks
+        - clock-names
 
 unevaluatedProperties: false
 
@@ -113,12 +196,48 @@ examples:
         clock-names = "mclk";
         interrupts = <25 0x2>;
         interrupt-parent = <&gpio>;
+        aincom-supply = <&aincom>;
         dvdd-supply = <&dvdd>;
         avdd-supply = <&avdd>;
+        vref-supply = <&vref>;
 
         adi,refin2-pins-enable;
         adi,rejection-60-Hz-enable;
         adi,buffer-enable;
         adi,burnout-currents-enable;
         };
     };
+  - |
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        adc@0 {
+            compatible = "adi,ad7194";
+            reg = <0>;
+
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            spi-max-frequency = <1000000>;
+            spi-cpol;
+            spi-cpha;
+            #clock-cells = <0>;
+            interrupts = <25 0x2>;
+            interrupt-parent = <&gpio>;
+            aincom-supply = <&aincom>;
+            dvdd-supply = <&dvdd>;
+            avdd-supply = <&avdd>;
+            vref-supply = <&vref>;
+
+            channel@0 {
+                reg = <0>;
+                diff-channels = <1 6>;
+            };
+
+            channel@1 {
+                reg = <1>;
+                single-channel = <1>;
+            };
+        };
+    };

arch/arm/boot/dts/zynq-coraz7s-ad7190.dts

@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Analog Devices AD719x
+ * https://wiki.analog.com/resources/tools-software/linux-drivers/iio-adc/ad7192
+ *
+ * hdl_project: <ad719x_asdz/coraz7s>
+ *
+ * Copyright (C) 2024 Analog Devices, Inc.
+ */
+/dts-v1/;
+#include "zynq-coraz7s.dtsi"
+
+/ {
+	aincom: fixedregulator@0 {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-supply0";
+		regulator-min-microvolt = <1000000>;
+		regulator-max-microvolt = <1000000>;
+		regulator-boot-on;
+	};
+
+	avdd: fixedregulator@1 {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-supply1";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-boot-on;
+	};
+
+	dvdd: fixedregulator@2 {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-supply2";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+	};
+
+	vref: fixedregulator@3 {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-supply3";
+		regulator-min-microvolt = <2500000>;
+		regulator-max-microvolt = <2500000>;
+		regulator-boot-on;
+	};
+};
+
+&spi0 {
+	status = "okay";
+	ad7190: adc@0 {
+		compatible = "adi,ad7190";
+		reg = <0>;
+		spi-max-frequency = <1000000>;
+		spi-cpol;
+		spi-cpha;
+
+		interrupts = <86 0x2>;
+		interrupt-parent = <&gpio0>;
+
+		aincom-supply = <&aincom>;
+		avdd-supply = <&avdd>;
+		dvdd-supply = <&dvdd>;
+		vref-supply = <&vref>;
+	};
+};

arch/arm/boot/dts/zynq-coraz7s-ad7192.dts

@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Analog Devices AD719x
+ * https://wiki.analog.com/resources/tools-software/linux-drivers/iio-adc/ad7192
+ *
+ * hdl_project: <ad719x_asdz/coraz7s>
+ *
+ * Copyright (C) 2024 Analog Devices, Inc.
+ */
+/dts-v1/;
+#include "zynq-coraz7s.dtsi"
+
+/ {
+	aincom: fixedregulator@0 {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-supply0";
+		regulator-min-microvolt = <1000000>;
+		regulator-max-microvolt = <1000000>;
+		regulator-boot-on;
+	};
+
+	avdd: fixedregulator@1 {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-supply1";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-boot-on;
+	};
+
+	dvdd: fixedregulator@2 {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-supply2";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+	};
+
+	vref: fixedregulator@3 {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-supply3";
+		regulator-min-microvolt = <2500000>;
+		regulator-max-microvolt = <2500000>;
+		regulator-boot-on;
+	};
+};
+
+&spi0 {
+	status = "okay";
+	ad7192: adc@0 {
+		compatible = "adi,ad7192";
+		reg = <0>;
+		spi-max-frequency = <1000000>;
+		spi-cpol;
+		spi-cpha;
+
+		interrupts = <86 0x2>;
+		interrupt-parent = <&gpio0>;
+
+		aincom-supply = <&aincom>;
+		avdd-supply = <&avdd>;
+		dvdd-supply = <&dvdd>;
+		vref-supply = <&vref>;
+	};
+};

arch/arm/boot/dts/zynq-coraz7s-ad7193.dts

@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Analog Devices AD719x
+ * https://wiki.analog.com/resources/tools-software/linux-drivers/iio-adc/ad7192
+ *
+ * hdl_project: <ad719x_asdz/coraz7s>
+ *
+ * Copyright (C) 2024 Analog Devices, Inc.
+ */
+/dts-v1/;
+#include "zynq-coraz7s.dtsi"
+
+/ {
+	aincom: fixedregulator@0 {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-supply0";
+		regulator-min-microvolt = <1000000>;
+		regulator-max-microvolt = <1000000>;
+		regulator-boot-on;
+	};
+
+	avdd: fixedregulator@1 {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-supply1";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+	};
+
+	dvdd: fixedregulator@2 {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-supply2";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+	};
+
+	vref: fixedregulator@3 {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-supply3";
+		regulator-min-microvolt = <2500000>;
+		regulator-max-microvolt = <2500000>;
+		regulator-boot-on;
+	};
+};
+
+&spi0 {
+	status = "okay";
+	ad7193: adc@0 {
+		compatible = "adi,ad7193";
+		reg = <0>;
+		spi-max-frequency = <1000000>;
+		spi-cpol;
+		spi-cpha;
+
+		interrupts = <86 0x2>;
+		interrupt-parent = <&gpio0>;
+
+		aincom-supply = <&aincom>;
+		avdd-supply = <&avdd>;
+		dvdd-supply = <&dvdd>;
+		vref-supply = <&vref>;
+	};
+};