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Message-Id: <20251127-ads1x18-v2-1-2ebfd780b633@gmail.com>
Date: Thu, 27 Nov 2025 22:37:10 -0500
From: Kurt Borja <kuurtb@...il.com>
To: Jonathan Cameron <jic23@...nel.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Tobias Sperling <tobias.sperling@...ting.com>
Cc: David Lechner <dlechner@...libre.com>,
Nuno Sá <nuno.sa@...log.com>,
Andy Shevchenko <andy@...nel.org>, linux-iio@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
Jonathan Cameron <Jonathan.Cameron@...wei.com>,
Kurt Borja <kuurtb@...il.com>
Subject: [PATCH v2 1/2] dt-bindings: iio: adc: Add TI ADS1018/ADS1118
Add documentation for Texas Instruments ADS1018 and ADS1118
analog-to-digital converters.
Signed-off-by: Kurt Borja <kuurtb@...il.com>
---
.../devicetree/bindings/iio/adc/ti,ads1018.yaml | 93 ++++++++++++++++++++++
MAINTAINERS | 6 ++
2 files changed, 99 insertions(+)
diff --git a/Documentation/devicetree/bindings/iio/adc/ti,ads1018.yaml b/Documentation/devicetree/bindings/iio/adc/ti,ads1018.yaml
new file mode 100644
index 000000000000..021f2a3ca4be
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/ti,ads1018.yaml
@@ -0,0 +1,93 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/ti,ads1018.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI ADS1018/ADS1118 SPI analog to digital converter
+
+maintainers:
+ - Kurt Borja <kuurtb@...il.com>
+
+description: |
+ The ADS1018/ADS1118 is a precision, low-power, 12-bit or 16-bit, noise-free,
+ analog-to-digital converter (ADC). It integrates a programmable gain amplifier
+ (PGA), voltage reference, oscillator and high-accuracy temperature sensor.
+
+ Datasheets:
+ - ADS1018: https://www.ti.com/lit/ds/symlink/ads1018.pdf
+ - ADS1118: https://www.ti.com/lit/ds/symlink/ads1118.pdf
+
+properties:
+ compatible:
+ enum:
+ - ti,ads1018
+ - ti,ads1118
+
+ reg:
+ maxItems: 1
+
+ vdd-supply: true
+
+ spi-max-frequency:
+ maximum: 4000000
+
+ spi-cpha: true
+
+ interrupts:
+ description: DOUT/DRDY (Data Out/Data Ready) line.
+ maxItems: 1
+
+ drdy-gpios:
+ description:
+ Extra GPIO line connected to DOUT/DRDY (Data Out/Data Ready). This allows
+ distinguishing between interrupts triggered by the data-ready signal and
+ interrupts triggered by an SPI transfer.
+ maxItems: 1
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ '#io-channel-cells':
+ const: 1
+
+required:
+ - compatible
+ - reg
+ - vdd-supply
+ - '#address-cells'
+ - '#size-cells'
+
+allOf:
+ - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: true
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/gpio/gpio.h>
+
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ adc@0 {
+ compatible = "ti,ads1118";
+ reg = <0>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ spi-max-frequency = <4000000>;
+ spi-cpha;
+
+ vdd-supply = <&vdd_3v3_reg>;
+
+ interrupts-extended = <&gpio 14 IRQ_TYPE_EDGE_FALLING>;
+ drdy-gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 31d98efb1ad1..3d5295b5d6eb 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -25646,6 +25646,12 @@ S: Maintained
F: Documentation/devicetree/bindings/iio/adc/ti,ads1119.yaml
F: drivers/iio/adc/ti-ads1119.c
+TI ADS1018 ADC DRIVER
+M: Kurt Borja <kuurtb@...il.com>
+L: linux-iio@...r.kernel.org
+S: Maintained
+F: Documentation/devicetree/bindings/iio/adc/ti,ads1018.yaml
+
TI ADS7924 ADC DRIVER
M: Hugo Villeneuve <hvilleneuve@...onoff.com>
L: linux-iio@...r.kernel.org
--
2.52.0
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