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Date: Mon, 27 May 2024 17:40:49 +0200
From: Francesco Dolcini <francesco@...cini.it>
To: Francesco Dolcini <francesco@...cini.it>,
João Paulo Gonçalves <jpaulo.silvagoncalves@...il.com>,
Jonathan Cameron <jic23@...nel.org>,
Lars-Peter Clausen <lars@...afoo.de>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: João Paulo Gonçalves <joao.goncalves@...adex.com>,
linux-iio@...r.kernel.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
Francesco Dolcini <francesco.dolcini@...adex.com>
Subject: [PATCH v1 1/2] dt-bindings: iio: adc: add ti,ads1119
From: João Paulo Gonçalves <joao.goncalves@...adex.com>
Add devicetree bindings for Texas Instruments ADS1119 16-bit ADC
with I2C interface.
Datasheet: https://www.ti.com/lit/gpn/ads1119
Signed-off-by: João Paulo Gonçalves <joao.goncalves@...adex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@...adex.com>
---
.../bindings/iio/adc/ti,ads1119.yaml | 122 ++++++++++++++++++
MAINTAINERS | 7 +
2 files changed, 129 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/adc/ti,ads1119.yaml
diff --git a/Documentation/devicetree/bindings/iio/adc/ti,ads1119.yaml b/Documentation/devicetree/bindings/iio/adc/ti,ads1119.yaml
new file mode 100644
index 000000000000..ab4f01199dbe
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/ti,ads1119.yaml
@@ -0,0 +1,122 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/ti,ads1119.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments ADS1119 ADC
+
+maintainers:
+ - João Paulo Gonçalves <jpaulo.silvagoncalves@...il.com>
+
+description: |
+ The TI ADS1119 is a precision 16-bit ADC over I2C that offers single-ended and
+ differential measurements using a multiplexed input. It features a programmable
+ gain, a programmable sample rate, an internal oscillator and voltage reference,
+ and a 50/60Hz rejection filter.
+
+properties:
+ compatible:
+ const: ti,ads1119
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ reset-gpios:
+ maxItems: 1
+
+ vref-supply:
+ description:
+ ADC external reference voltage (VREF).
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 0
+
+ "#io-channel-cells":
+ const: 1
+
+required:
+ - compatible
+ - reg
+ - "#address-cells"
+ - "#size-cells"
+
+patternProperties:
+ "^channel@([0-6])$":
+ $ref: adc.yaml
+ type: object
+ description: |
+ ADC channels.
+
+ properties:
+ reg:
+ description: |
+ 0: Voltage over AIN0 and AIN1.
+ 1: Voltage over AIN2 and AIN3.
+ 2: Voltage over AIN1 and AIN2.
+ 3: Voltage over AIN0 and GND.
+ 4: Voltage over AIN1 and GND.
+ 5: Voltage over AIN2 and GND.
+ 6: Voltage over AIN3 and GND.
+ items:
+ - minimum: 0
+ maximum: 6
+
+ ti,gain:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: |
+ PGA gain value.
+ enum: [1, 4]
+ default: 1
+
+ ti,datarate:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: |
+ Data acquisition rate in samples per second.
+ enum: [20, 90, 330, 1000]
+ default: 20
+
+ required:
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/gpio/gpio.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ adc@40 {
+ compatible = "ti,ads1119";
+ reg = <0x40>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #io-channel-cells = <1>;
+
+ channel@0 {
+ reg = <0>;
+ ti,gain = <4>;
+ ti,datarate = <330>;
+ };
+
+ channel@4 {
+ reg = <4>;
+ ti,datarate = <1000>;
+ };
+
+ channel@5 {
+ reg = <5>;
+ ti,gain = <4>;
+ };
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index d6c90161c7bf..f1b2c4b815e2 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -22380,6 +22380,13 @@ M: Robert Richter <rric@...nel.org>
S: Odd Fixes
F: drivers/gpio/gpio-thunderx.c
+TI ADS1119 ADC DRIVER
+M: Francesco Dolcini <francesco@...cini.it>
+M: João Paulo Gonçalves <jpaulo.silvagoncalves@...il.com>
+L: linux-iio@...r.kernel.org
+S: Maintained
+F: Documentation/devicetree/bindings/iio/adc/ti,ads1119.yaml
+
TI ADS7924 ADC DRIVER
M: Hugo Villeneuve <hvilleneuve@...onoff.com>
L: linux-iio@...r.kernel.org
--
2.39.2
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