From patchwork Tue Dec 12 10:44:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Dumitru Ceclan X-Patchwork-Id: 754686 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="TXZFx4aE" Received: from mail-ej1-x631.google.com (mail-ej1-x631.google.com [IPv6:2a00:1450:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1FE87A0; Tue, 12 Dec 2023 02:45:08 -0800 (PST) Received: by mail-ej1-x631.google.com with SMTP id a640c23a62f3a-a1f8f470903so311201366b.1; Tue, 12 Dec 2023 02:45:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1702377906; x=1702982706; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=jDoKshOkT4oCICh2o81EREp905fbii0tDR9Si3tjgWs=; b=TXZFx4aEkbGbnwDXU76390wyQvFqwgKUOEytwEa9STZPVS76aJLLpgWlciCY19cIAd 4TfdiUQBU+eYEThjCcoChTVkCix/WVdNHHk2ApkyGCANRcxo99yX7cW9sNWVjCNVYDCR xX1ax1gfCxAhbpA9yBAXRbjgtu2flZ9myVtTXbp22aWazH7UsTZ/k28eEIPPMEl9vPCx IlEFHaL8G75gYLxBHJAhTVbYpifgwsfE10gEqff9Dj8vcFm7ys+fVI9xq2KK33CM297T hfRs2zAbCAJRqbd3nZiA3j/l1cgMQ9v9fDpk7hsd00MRYjD9jaWWCi7yOvXAcKIFj82Y 38xg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702377906; x=1702982706; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=jDoKshOkT4oCICh2o81EREp905fbii0tDR9Si3tjgWs=; b=QPKceZprUrG//IoAzY61uU1uGjxwDj5YT4UotF7aCVMwsiJMadlkEHQ6omSfQ2Q8R5 KiLpunInaoGlFcT1iZ/n7RIW2azXGGe9UbTfetcJkRh25LuAmfGncuCNlFwQuhbrnQ7P HT+0lWxEjkyWQb5xFg8Ty+22j9fISqucHG1oDUYVNimbaoEt7z1s+5FD6xWJEScCBbMk c/yYWdm5LR24MCLEPsrECQAbyZCd8F2ou2M4nyM00jXQG7Of6hTzacHSdpt8FWIjYkt3 joqsR1EauDAuHVpfYdowZ2N9bzqOvEzMgid916ezLSJZ8eaPqpnlaGu/jTHBpxm/7VxG 5Q2Q== X-Gm-Message-State: AOJu0YwPI/8+1sdUf2G1u1RNdiz5RaeHPOWjxTyriYj/hVp6DI287NJz YO6fy0nxldrQ3+q9uv8zSAE= X-Google-Smtp-Source: AGHT+IGwmSAFBmPK8BIkBt+jlW7Oce8vXCTkIslcIlDx6vDOikQAgus7RKZh9vRAc+tFlysqi2cZMg== X-Received: by 2002:a17:906:230f:b0:a02:a2cc:66b5 with SMTP id l15-20020a170906230f00b00a02a2cc66b5mr3394168eja.76.1702377906245; Tue, 12 Dec 2023 02:45:06 -0800 (PST) Received: from HYB-hhAwRlzzMZb.ad.analog.com ([5.2.194.157]) by smtp.gmail.com with ESMTPSA id vo10-20020a170907a80a00b00a1d17c92ef3sm6066013ejc.51.2023.12.12.02.45.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Dec 2023 02:45:05 -0800 (PST) From: Dumitru Ceclan To: Cc: linus.walleij@linaro.org, brgl@bgdev.pl, andy@kernel.org, linux-gpio@vger.kernel.org, Lars-Peter Clausen , Jonathan Cameron , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Michael Walle , Andy Shevchenko , Arnd Bergmann , ChiaEn Wu , Niklas Schnelle , =?utf-8?q?Leonard_G=C3=B6hrs?= , Mike Looijmans , Haibo Chen , Hugo Villeneuve , Ceclan Dumitru , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Dumitru Ceclan Subject: [PATCH v8 1/2] dt-bindings: adc: add AD7173 Date: Tue, 12 Dec 2023 12:44:35 +0200 Message-ID: <20231212104451.22522-1-mitrutzceclan@gmail.com> X-Mailer: git-send-email 2.42.0 Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The AD7173 family offer a complete integrated Sigma-Delta ADC solution which can be used in high precision, low noise single channel applications or higher speed multiplexed applications. The Sigma-Delta ADC is intended primarily for measurement of signals close to DC but also delivers outstanding performance with input bandwidths out to ~10kHz. Signed-off-by: Dumitru Ceclan --- V7->V8 - include missing fix from V6 .../bindings/iio/adc/adi,ad7173.yaml | 170 ++++++++++++++++++ 1 file changed, 170 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7173.yaml diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7173.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7173.yaml new file mode 100644 index 000000000000..25a5404ee353 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7173.yaml @@ -0,0 +1,170 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +# Copyright 2023 Analog Devices Inc. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/adi,ad7173.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices AD7173 ADC + +maintainers: + - Ceclan Dumitru + +description: | + Bindings for the Analog Devices AD717X ADC's. Datasheets for supported chips: + https://www.analog.com/media/en/technical-documentation/data-sheets/AD7172-2.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/AD7173-8.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/AD7175-2.pdf + https://www.analog.com/media/en/technical-documentation/data-sheets/AD7176-2.pdf + +properties: + compatible: + enum: + - adi,ad7172-2 + - adi,ad7173-8 + - adi,ad7175-2 + - adi,ad7176-2 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + spi-max-frequency: + maximum: 20000000 + + refin-supply: + description: external reference supply, can be used as reference for conversion. + + refin2-supply: + description: external reference supply, can be used as reference for conversion. + + avdd-supply: + description: avdd supply, can be used as reference for conversion. + +patternProperties: + "^channel@[0-9a-f]$": + type: object + $ref: adc.yaml + unevaluatedProperties: false + + properties: + reg: + minimum: 0 + maximum: 15 + + diff-channels: + items: + minimum: 0 + maximum: 31 + + adi,reference-select: + description: | + Select the reference source to use when converting on + the specific channel. Valid values are: + refin : REFIN(+)/REFIN(−). + refin2 : REFIN2(+)/REFIN2(−) + refout-avss: REFOUT/AVSS (Internal reference) + avdd : AVDD + + External reference refin2 only available on ad7173-8. + If not specified, internal reference used. + enum: + - refin + - refin2 + - refout-avss + - avdd + default: refout-avss + + required: + - reg + - diff-channels + +required: + - compatible + - reg + - interrupts + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + + - if: + properties: + compatible: + not: + contains: + const: adi,ad7173-8 + then: + properties: + refin2-supply: false + patternProperties: + "^channel@[0-9a-f]$": + properties: + adi,reference-select: + enum: + - refin + - refout-avss + - avdd + +unevaluatedProperties: false + +examples: + - | + #include + #include + + spi { + #address-cells = <1>; + #size-cells = <0>; + + adc@0 { + compatible = "adi,ad7173-8"; + reg = <0>; + + #address-cells = <1>; + #size-cells = <0>; + + interrupts = <25 IRQ_TYPE_EDGE_FALLING>; + interrupt-parent = <&gpio>; + spi-max-frequency = <5000000>; + + refin-supply = <&dummy_regulator>; + + channel@0 { + reg = <0>; + bipolar; + diff-channels = <0 1>; + adi,reference-select = "refin"; + }; + + channel@1 { + reg = <1>; + diff-channels = <2 3>; + }; + + channel@2 { + reg = <2>; + bipolar; + diff-channels = <4 5>; + }; + + channel@3 { + reg = <3>; + bipolar; + diff-channels = <6 7>; + }; + + channel@4 { + reg = <4>; + diff-channels = <8 9>; + adi,reference-select = "avdd"; + }; + }; + };