linux-kernel - [PATCH v4 3/5] dt-bindings: iio: adc: add ade9000

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Message-ID: <20250815095713.9830-4-antoniu.miclaus@analog.com>
Date: Fri, 15 Aug 2025 09:56:36 +0000
From: Antoniu Miclaus <antoniu.miclaus@...log.com>
To: <jic23@...nel.org>, <robh@...nel.org>, <conor+dt@...nel.org>,
        <linux-iio@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>
CC: Antoniu Miclaus <antoniu.miclaus@...log.com>
Subject: [PATCH v4 3/5] dt-bindings: iio: adc: add ade9000

Add devicetree bindings support for ade9000.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@...log.com>
---
changes in v4:
 - improve description formatting (remove unnecessary pipe symbols)
 - move $ref to end and remove allOf section for cleaner structure
 .../bindings/iio/adc/adi,ade9000.yaml         | 108 ++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ade9000.yaml

diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ade9000.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ade9000.yaml
new file mode 100644
index 000000000000..bd374c0d57d4
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ade9000.yaml
@@ -0,0 +1,108 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2025 Analog Devices Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/adi,ade9000.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices ADE9000 High Performance, Polyphase Energy Metering driver
+
+maintainers:
+  - Antoniu Miclaus <antoniu.miclaus@...log.com>
+
+description: |
+  The ADE9000 s a highly accurate, fully integrated, multiphase energy and power
+  quality monitoring device. Superior analog performance and a digital signal
+  processing (DSP) core enable accurate energy monitoring over a wide dynamic
+  range. An integrated high end reference ensures low drift over temperature
+  with a combined drift of less than ±25 ppm/°C maximum for the entire channel
+  including a programmable gain amplifier (PGA) and an analog-to- digital
+  converter (ADC).
+
+  https://www.analog.com/media/en/technical-documentation/data-sheets/ADE9000.pdf
+
+$ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+  compatible:
+    enum:
+      - adi,ade9000
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 20000000
+
+  interrupts:
+    maxItems: 3
+
+  interrupt-names:
+    items:
+      - const: irq0
+      - const: irq1
+      - const: dready
+
+  reset-gpios:
+    description:
+      Must be the device tree identifier of the RESET pin. As the line is
+      active low, it should be marked GPIO_ACTIVE_LOW.
+    maxItems: 1
+
+  vdd-supply: true
+
+  vref-supply: true
+
+  clocks:
+    description: External clock source when not using crystal
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: clkin
+
+  "#clock-cells":
+    description:
+      ADE9000 can provide clock output via CLKOUT pin with external buffer.
+    const: 0
+
+  clock-output-names:
+    items:
+      - const: clkout
+
+required:
+  - compatible
+  - reg
+  - reset-gpios
+  - interrupts
+  - interrupt-names
+  - vdd-supply
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    spi {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      adc@0 {
+          compatible = "adi,ade9000";
+          reg = <0>;
+          spi-max-frequency = <7000000>;
+
+          #clock-cells = <0>;
+          reset-gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
+          interrupts = <2 IRQ_TYPE_EDGE_FALLING>, <3 IRQ_TYPE_EDGE_FALLING>, <4 IRQ_TYPE_EDGE_FALLING>;
+          interrupt-names = "irq0", "irq1", "dready";
+          interrupt-parent = <&gpio>;
+          /* Optional: external clock instead of crystal */
+          /* clocks = <&ext_clock_24576khz>; */
+          /* clock-names = "clkin"; */
+          clock-output-names = "clkout";
+          vdd-supply = <&vdd_reg>;
+      };
+    };
-- 
2.43.0