From patchwork Thu Nov 16 13:46:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Ceclan, Dumitru" X-Patchwork-Id: 13457916 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="MimALJQB" Received: from mail-lf1-x135.google.com (mail-lf1-x135.google.com [IPv6:2a00:1450:4864:20::135]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E710419D; Thu, 16 Nov 2023 05:47:00 -0800 (PST) Received: by mail-lf1-x135.google.com with SMTP id 2adb3069b0e04-507bd19eac8so1065887e87.0; Thu, 16 Nov 2023 05:47:00 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1700142419; x=1700747219; 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=4riDUNHReIjba9jNFgLy2y8ooHDaaaBbqxL4CyG3VrQ=; b=MimALJQBksQ7NPyZHU9nhDmLvep4M9MfIidiPBWuVUdopqzLF36NUHyIKaO8IsrMUG U8Sp6Me5k1RNLkshbKnygBGZXn8W9mXuwXWyZYoSbc9ibpmLdZmhbwPWOLPTH6n9LB3J 60DBa4SMq8XCeU9UDTmMfGQtlO8cBEJ3FpCNc3LRY8m0EHyEEXOLJT8nmp/rqpj6wubC pm1xFoXyeTCum6TwZPgKA2s1BQdCoVlJ5QLECTF3qi6vUP6xFI/0HoI1pCrTiztSigON +P8DmC1ySRQ0wF+/XIqaXFtcsO0vnAVQQs+vqZ9MqQy467sl/0JciRAdyuY/mdveM3BX 7bJA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1700142419; x=1700747219; 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=4riDUNHReIjba9jNFgLy2y8ooHDaaaBbqxL4CyG3VrQ=; b=YidV1e281O4AgBF4uHTFVH8fEFejfR/zcaf1zTen6F7DYIPRqA9If0od9zdOkYnED9 VWN+wPZWZsnHcK52VOvPKpCyFjtxiC9TihWpbj5hZscdPWAbuP6+iONugBVVjGgsjn/k O0L3mYPW4B5m7fKY668PS9qwjDMQwL6WEiWrnMJibUGRtc8g39EuXCv2z3tbkEStTSIm bAOnY+7K7f4WDb2C2c9bHGaFtTlaBiwrDAgyX8mSK5gG0j1IGZ+ix6dkIQkRPZ9r7eeE XvITZdH1IWRBvUo6umSasQIEHndyBK3Bja1dlF6DuzA7dUQ929oLePpn7xHwHgo6zknT 6uUA== X-Gm-Message-State: AOJu0YzbU4hzRfkEi9rOc6a89t3/VuOHgdMiyX8sMVwOdrwIBVh/e3g/ JxNEYVtJx/3Lth4HgxBkk00= X-Google-Smtp-Source: AGHT+IFL/NuWsDiaywQTihviTlNe0Yg6vEx4NWx9NSig2wcqKYD7Jxfw5VED8sevA8TPIIufd+tiyw== X-Received: by 2002:a19:f808:0:b0:500:9a45:63b with SMTP id a8-20020a19f808000000b005009a45063bmr11482079lff.13.1700142418660; Thu, 16 Nov 2023 05:46:58 -0800 (PST) Received: from HYB-hhAwRlzzMZb.ad.analog.com ([5.2.194.157]) by smtp.gmail.com with ESMTPSA id ov3-20020a170906fc0300b00977cad140a8sm8467005ejb.218.2023.11.16.05.46.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Nov 2023 05:46:58 -0800 (PST) From: mitrutzceclan X-Google-Original-From: mitrutzceclan 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 , Conor Dooley Subject: [PATCH v4 1/2] dt-bindings: adc: add AD7173 Date: Thu, 16 Nov 2023 15:46:54 +0200 Message-ID: <20231116134655.21052-1-user@HYB-hhAwRlzzMZb> X-Mailer: git-send-email 2.42.0 Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Dumitru Ceclan 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. Reviewed-by: Conor Dooley # except reference_select Signed-off-by: Dumitru Ceclan --- V3 -> V4 - include supply attributes - add channel attribute for selecting conversion reference .../bindings/iio/adc/adi,ad7173.yaml | 166 ++++++++++++++++++ 1 file changed, 166 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..92aa352b6653 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7173.yaml @@ -0,0 +1,166 @@ +# 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 device driver + +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. + + dependencies: + refin2-supply: + properties: + compatible: + adi,ad7173-8 + + required: + - compatible + - reg + - interrupts + +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: + 0: REFIN(+)/REFIN(−). + 1: REFIN2(+)/REFIN2(−) + 2: REFOUT/AVSS (Internal reference) + 3: AVDD + + External reference 2 only available on ad7173-8. + If not specified, internal reference used. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1, 2, 3] + default: 2 + + bipolar: + type: boolean + + required: + - reg + - diff-channels + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + + - if: + properties: + compatible: + contains: + const: adi,ad7173-8 + then: + else: + patternProperties: + "^channel@[0-9a-f]$": + properties: + enum: [0, 2, 3] + +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>; + + channel@0 { + reg = <0>; + bipolar; + diff-channels = <0 1>; + }; + + 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>; + }; + }; + };