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Message-ID: <20250711130241.159143-3-antoniu.miclaus@analog.com>
Date: Fri, 11 Jul 2025 16:02:36 +0300
From: Antoniu Miclaus <antoniu.miclaus@...log.com>
To: <jic23@...nel.org>, <robh@...nel.org>, <conor+dt@...nel.org>,
<devicetree@...r.kernel.org>, <linux-iio@...r.kernel.org>,
<linux-kernel@...r.kernel.org>
CC: Antoniu Miclaus <antoniu.miclaus@...log.com>
Subject: [PATCH 2/3] dt-bindings: iio: adc: add ade9000
Add devicetree bindings support for ade9000.
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@...log.com>
---
.../bindings/iio/adc/adi,ade9000.yaml | 157 ++++++++++++++++++
1 file changed, 157 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..660dca4ea9b5
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ade9000.yaml
@@ -0,0 +1,157 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2025 Analog Devices Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/bindings/iio/adc/adi,ade9000.yaml#
+$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
+
+properties:
+ compatible:
+ enum:
+ - adi,ade9000
+
+ reg:
+ maxItems: 1
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ spi-max-frequency:
+ maximum: 20000000
+
+ interrupts:
+ maxItems: 2
+
+ 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
+
+ interrupt-names:
+ items:
+ - const: irq0
+ - const: irq1
+
+ adi,wf-cap-en:
+ description: Enable fixed data rate for waveform buffer instead of resampled data
+ type: boolean
+
+ adi,wf-mode:
+ description: |
+ Waveform buffer filling and trigger mode.
+ 0 - Stop when waveform buffer is full
+ 1 - Continuous fill, stop only on enabled trigger events
+ 2 - Continuous filling, center capture around enabled trigger events
+ 3 - Streaming mode
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1, 2, 3]
+
+ adi,wf-src:
+ description: |
+ Waveform buffer data source selection.
+ 0 - Sinc4 output, at 16 kSPS
+ 1 - Reserved
+ 2 - Sinc4 + IIR LPF output, at 4 kSPS
+ 3 - Current and voltage channel waveform samples, processed by the DSP at 4 kSPS
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 2, 3]
+
+ adi,wf-in-en:
+ description: Enable IN waveform samples readout from waveform buffer
+ type: boolean
+
+ adi,egy-time:
+ description: Energy accumulation time setting for energy registers
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+required:
+ - compatible
+ - reg
+ - reset-gpios
+ - interrupts
+ - interrupt-names
+ - adi,wf-mode
+ - adi,wf-src
+
+additionalProperties: false
+
+patternProperties:
+ "^phase@[0-2]$":
+ type: object
+ description: |
+ Represents the external phases which are externally connected. Each phase
+ has a current, voltage and power component
+
+ properties:
+ reg:
+ description: |
+ The phase represented by a number
+ 0 - Phase A
+ 1 - Phase B
+ 2 - Phase C
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1, 2]
+
+ required:
+ - reg
+
+ additionalProperties: 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>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reset-gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
+ interrupts = <2 IRQ_TYPE_EDGE_FALLING>, <3 IRQ_TYPE_EDGE_FALLING>;
+ interrupt-names = "irq0", "irq1";
+ interrupt-parent = <&gpio>;
+
+ adi,wf-cap-en;
+ adi,wf-mode = <3>;
+ adi,wf-src = <3>;
+ adi,wf-in-en;
+
+ phase@0 {
+ reg = <0>;
+ };
+ phase@1 {
+ reg = <1>;
+ };
+ phase@2 {
+ reg = <2>;
+ };
+ };
+ };
+...
--
2.49.0
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