From patchwork Fri Oct 21 10:41:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Cosmin Tanislav X-Patchwork-Id: 617572 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 69495C4321E for ; Fri, 21 Oct 2022 10:41:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229832AbiJUKlg (ORCPT ); Fri, 21 Oct 2022 06:41:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59382 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229874AbiJUKle (ORCPT ); Fri, 21 Oct 2022 06:41:34 -0400 Received: from mail-ed1-x534.google.com (mail-ed1-x534.google.com [IPv6:2a00:1450:4864:20::534]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E963825DAF9; Fri, 21 Oct 2022 03:41:31 -0700 (PDT) Received: by mail-ed1-x534.google.com with SMTP id w8so1889152edc.1; Fri, 21 Oct 2022 03:41:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=ceR4bt79s/YfV5/+A8CLVUXGpWtVNjzKVJMDdH/JpFM=; b=NYFfT5lHstoAy8mvcsYtfWSr0eE0fn+Iceu75Utk9gAzmBvGGXwVWTmVtEjaFvOrAE mJN6fpWbypJwndX+1RLR18vPJCKUsl4TaIctRM/e4unf9ZMelrfLzdLzTgf8C/Kp4M4g 700IoyQ7ivGJmt50oWSzM1QV+OpjvKXXd7N7eJadSL0vyfeEo5btOSVplL/P/NpIrvq9 YTfs40EWa19nDgdwts/nJWwexxGitSAGagcz76t6rg2l+Jg2qt/AxSw7azkezgbLHUVe nm3YVwxKhgGT5makbM02blGQEevQb8seH8h2SKieIWdXA6gWdtqm3f6+0KRr5laNKkA0 x1cA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ceR4bt79s/YfV5/+A8CLVUXGpWtVNjzKVJMDdH/JpFM=; b=euKunZa6W8WK75z+h5dyx8xpkvGY8V525BGhnDn2wtwyorVcBkH47j0tpC17ktjgZL rPk7VFvNurTYOjaehnVoAILy/FkYmOaAbTMG/XY/bMrp7W5W39P955myxdsBlEQrnKFk LvV3h7yemfI3EN6QZFXPA9HpvKdpQr4NhUGC3A4aDJdbA9t+OePrrkRWoHnFyA7GQHaJ g4PcEM5CXic508S/aSaO7QlRRPhIebRxjex51fA2FBfOuKt77PBWyRieHTX1uItgr5hk oZDfrVLwRYQKhhPKojapnwVHg0yvGKXJq9Eqjtepcv7kuACKzummeKWk0aRoEnnvRoCG Ev9Q== X-Gm-Message-State: ACrzQf1751VTrFRL1jWlsjfA0Jb61wNSJedLNKu6p9NxTKuFbe0YGGvI x4jxdcuAlWhg6yWAdZDkFFU= X-Google-Smtp-Source: AMsMyM5Gx5kr7CnCeCLIx5Nm8Llx/F/X/lB1gXdbzrGdtHP32GFuYqw8yuDXx2sZRbht/tWKsglQYw== X-Received: by 2002:a17:907:1b1c:b0:72f:9aac:ee41 with SMTP id mp28-20020a1709071b1c00b0072f9aacee41mr15004683ejc.56.1666348890379; Fri, 21 Oct 2022 03:41:30 -0700 (PDT) Received: from localhost.localdomain ([5.2.194.157]) by smtp.gmail.com with ESMTPSA id da3-20020a056402176300b004615bea1d5bsm121290edb.35.2022.10.21.03.41.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 21 Oct 2022 03:41:29 -0700 (PDT) From: Cosmin Tanislav Cc: Jonathan Cameron , Rob Herring , Linus Walleij , linux-iio@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Cosmin Tanislav , Rob Herring Subject: [PATCH v10 1/2] dt-bindings: iio: adc: add AD4130 Date: Fri, 21 Oct 2022 13:41:14 +0300 Message-Id: <20221021104115.1812486-2-demonsingur@gmail.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221021104115.1812486-1-demonsingur@gmail.com> References: <20221021104115.1812486-1-demonsingur@gmail.com> MIME-Version: 1.0 To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org From: Cosmin Tanislav AD4130-8 is an ultra-low power, high precision, measurement solution for low bandwidth battery operated applications. The fully integrated AFE (Analog Front-End) includes a multiplexer for up to 16 single-ended or 8 differential inputs, PGA (Programmable Gain Amplifier), 24-bit Sigma-Delta ADC, on-chip reference and oscillator, selectable filter options, smart sequencer, sensor biasing and excitation options, diagnostics, and a FIFO buffer. Signed-off-by: Cosmin Tanislav Reviewed-by: Rob Herring --- .../bindings/iio/adc/adi,ad4130.yaml | 259 ++++++++++++++++++ MAINTAINERS | 7 + 2 files changed, 266 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml new file mode 100644 index 000000000000..28ebd38b9db4 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml @@ -0,0 +1,259 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +# Copyright 2022 Analog Devices Inc. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/adi,ad4130.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices AD4130 ADC device driver + +maintainers: + - Cosmin Tanislav + +description: | + Bindings for the Analog Devices AD4130 ADC. Datasheet can be found here: + https://www.analog.com/media/en/technical-documentation/data-sheets/AD4130-8.pdf + +properties: + compatible: + enum: + - adi,ad4130 + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + description: phandle to the master clock (mclk) + + clock-names: + items: + - const: mclk + + interrupts: + maxItems: 1 + + interrupt-names: + description: | + Specify which interrupt pin should be configured as Data Ready / FIFO + interrupt. + Default if not supplied is int. + enum: + - int + - clk + - p2 + - dout + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + '#clock-cells': + const: 0 + + clock-output-names: + maxItems: 1 + + refin1-supply: + description: refin1 supply. Can be used as reference for conversion. + + refin2-supply: + description: refin2 supply. Can be used as reference for conversion. + + avdd-supply: + description: AVDD voltage supply. Can be used as reference for conversion. + + iovdd-supply: + description: IOVDD voltage supply. Used for the chip interface. + + spi-max-frequency: + maximum: 5000000 + + adi,ext-clk-freq-hz: + description: Specify the frequency of the external clock. + enum: [76800, 153600] + default: 76800 + + adi,bipolar: + description: Specify if the device should be used in bipolar mode. + type: boolean + + adi,vbias-pins: + description: Analog inputs to apply a voltage bias of (AVDD − AVSS) / 2 to. + $ref: /schemas/types.yaml#/definitions/uint32-array + minItems: 1 + maxItems: 16 + items: + minimum: 0 + maximum: 15 + +required: + - compatible + - reg + - interrupts + +patternProperties: + "^channel@([0-9a-f])$": + type: object + $ref: adc.yaml + unevaluatedProperties: false + + properties: + reg: + description: The channel number. + minimum: 0 + maximum: 15 + + diff-channels: + description: | + Besides the analog inputs available, internal inputs can be used. + 16: Internal temperature sensor. + 17: AVSS + 18: Internal reference + 19: DGND + 20: (AVDD − AVSS)/6+ + 21: (AVDD − AVSS)/6- + 22: (IOVDD − DGND)/6+ + 23: (IOVDD − DGND)/6- + 24: (ALDO − AVSS)/6+ + 25: (ALDO − AVSS)/6- + 26: (DLDO − DGND)/6+ + 27: (DLDO − DGND)/6- + 28: V_MV_P + 29: V_MV_M + items: + minimum: 0 + maximum: 29 + + adi,reference-select: + description: | + Select the reference source to use when converting on the + specific channel. Valid values are: + 0: REFIN1(+)/REFIN1(−) + 1: REFIN2(+)/REFIN2(−) + 2: REFOUT/AVSS (Internal reference) + 3: AVDD/AVSS + If not specified, REFIN1 is used. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1, 2, 3] + default: 0 + + adi,excitation-pin-0: + description: | + Analog input to apply excitation current to while the channel + is active. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 15 + default: 0 + + adi,excitation-pin-1: + description: | + Analog input to apply excitation current to while this channel + is active. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 15 + default: 0 + + adi,excitation-current-0-nanoamp: + description: | + Excitation current in nanoamps to be applied to pin specified in + adi,excitation-pin-0 while this channel is active. + enum: [0, 100, 10000, 20000, 50000, 100000, 150000, 200000] + default: 0 + + adi,excitation-current-1-nanoamp: + description: | + Excitation current in nanoamps to be applied to pin specified in + adi,excitation-pin-1 while this channel is active. + enum: [0, 100, 10000, 20000, 50000, 100000, 150000, 200000] + default: 0 + + adi,burnout-current-nanoamp: + description: | + Burnout current in nanoamps to be applied for this channel. + enum: [0, 500, 2000, 4000] + default: 0 + + adi,buffered-positive: + description: Enable buffered mode for positive input. + type: boolean + + adi,buffered-negative: + description: Enable buffered mode for negative input. + type: boolean + + required: + - reg + - diff-channels + +additionalProperties: false + +examples: + - | + #include + + spi { + #address-cells = <1>; + #size-cells = <0>; + + adc@0 { + compatible = "adi,ad4130"; + reg = <0>; + + #address-cells = <1>; + #size-cells = <0>; + + spi-max-frequency = <5000000>; + interrupts = <27 IRQ_TYPE_EDGE_FALLING>; + interrupt-parent = <&gpio>; + + channel@0 { + reg = <0>; + + adi,reference-select = <2>; + + /* AIN8, AIN9 */ + diff-channels = <8 9>; + }; + + channel@1 { + reg = <1>; + + adi,reference-select = <2>; + + /* AIN10, AIN11 */ + diff-channels = <10 11>; + }; + + channel@2 { + reg = <2>; + + adi,reference-select = <2>; + + /* Temperature Sensor, DGND */ + diff-channels = <16 19>; + }; + + channel@3 { + reg = <3>; + + adi,reference-select = <2>; + + /* Internal reference, DGND */ + diff-channels = <18 19>; + }; + + channel@4 { + reg = <4>; + + adi,reference-select = <2>; + + /* DGND, DGND */ + diff-channels = <19 19>; + }; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index cf0f18502372..1ea39e9eea91 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1117,6 +1117,13 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git T: git git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git F: drivers/net/amt.c +ANALOG DEVICES INC AD4130 DRIVER +M: Cosmin Tanislav +L: linux-iio@vger.kernel.org +S: Supported +W: http://ez.analog.com/community/linux-device-drivers +F: Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml + ANALOG DEVICES INC AD7192 DRIVER M: Alexandru Tachici L: linux-iio@vger.kernel.org