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Tue, 02 Dec 2025 20:56:39 -0800 (PST) From: Kurt Borja Date: Tue, 02 Dec 2025 23:56:18 -0500 Subject: [PATCH v4 1/2] dt-bindings: iio: adc: Add TI ADS1018/ADS1118 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20251202-ads1x18-v4-1-8c3580bc273f@gmail.com> References: <20251202-ads1x18-v4-0-8c3580bc273f@gmail.com> In-Reply-To: <20251202-ads1x18-v4-0-8c3580bc273f@gmail.com> To: Jonathan Cameron , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Tobias Sperling Cc: David Lechner , =?utf-8?q?Nuno_S=C3=A1?= , Andy Shevchenko , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Jonathan Cameron , Kurt Borja , Krzysztof Kozlowski X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=3280; i=kuurtb@gmail.com; h=from:subject:message-id; bh=VsKMfePN7JjgmEwgQW457cXjo1Jn7sfHu3mU8ne1Azc=; b=owGbwMvMwCUmluBs8WX+lTTG02pJDJn6h5nFLtTkGeTtuLeuZapyUKdkdo8s5xnv5JaNHLZqs 1oXrDrbUcrCIMbFICumyNKesOjbo6i8t34HQu/DzGFlAhnCwMUpABMJXcPIsNs01yNS9928Bsl1 03bvyOOMEL9flJ4Wa6eqs6+Yzby+j+GfokBefpv9TYVHpzrTTUujZT6eO1brny3Cw9VuUNTj1cc AAA== X-Developer-Key: i=kuurtb@gmail.com; a=openpgp; fpr=54D3BE170AEF777983C3C63B57E3B6585920A69A Add documentation for Texas Instruments ADS1018 and ADS1118 analog-to-digital converters. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Kurt Borja --- .../devicetree/bindings/iio/adc/ti,ads1018.yaml | 82 ++++++++++++++++++++++ MAINTAINERS | 6 ++ 2 files changed, 88 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..93c9b2921a54 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/ti,ads1018.yaml @@ -0,0 +1,82 @@ +# 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 + +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 + + '#io-channel-cells': + const: 1 + +required: + - compatible + - reg + - vdd-supply + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + +examples: + - | + #include + #include + + spi { + #address-cells = <1>; + #size-cells = <0>; + + adc@0 { + compatible = "ti,ads1118"; + reg = <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 +L: linux-iio@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/iio/adc/ti,ads1018.yaml + TI ADS7924 ADC DRIVER M: Hugo Villeneuve L: linux-iio@vger.kernel.org -- 2.52.0