From patchwork Wed Apr 13 09:40:09 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Cosmin Tanislav X-Patchwork-Id: 561047 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 28E92C433EF for ; Wed, 13 Apr 2022 09:40:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233991AbiDMJmp (ORCPT ); Wed, 13 Apr 2022 05:42:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34302 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232272AbiDMJmo (ORCPT ); Wed, 13 Apr 2022 05:42:44 -0400 Received: from mail-ed1-x52e.google.com (mail-ed1-x52e.google.com [IPv6:2a00:1450:4864:20::52e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EC9393586F; Wed, 13 Apr 2022 02:40:23 -0700 (PDT) Received: by mail-ed1-x52e.google.com with SMTP id c6so1645361edn.8; Wed, 13 Apr 2022 02:40:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=QV2H8Zpc3cQYjchDu8RYw5gWfW1y7hY5+ft9F48s9lg=; b=qPQtL4dx5UsyjmfJN1u2zFmTxY9nARpLmPh3SIwgOeAl6LunvZ77eTTgWZkXe1Db2n 5dgiV02CRGnQXBnQ2kbmEnt7wvHMlZb1Dx49BbrzoICLWJuF+iDqQlI5MoWKryXGBO0N uLWkc+kTAWpUSgC0qylQGE4aRCXDqZUWoSBtaJY1GVbKf6HsjhPZb1DRHjfsgNqzuHJa UusJTCm/Sci4jSYGYk7OpRcgBVxkK7ggF0N88v88nL13GxAIQ3IzqGf79bYmLpr9E0Z8 JaDAxI9jf1xBqzomjPy16HrmpRhH9mf+nlruximkz8tmRp5HimoB7fVl5cvXPNvD3B6c 0Vkw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=QV2H8Zpc3cQYjchDu8RYw5gWfW1y7hY5+ft9F48s9lg=; b=6kTEXOvNEche1e3F0fir6CyvvyaAyfctj22npkPtRV7WJ5moGqOmk8/qB5R7K7e2EQ nmJgvSjLu5StKCFcYMJ8vyGy6wa/Qu15mnLSzhz586uiXh9A5nwE1XipjqD2OyMIfLyl i8PNGKmmBL5XAXRDKf6ElRTz5p37pEoW84VyILf+KZZwjqMQzqUXmY2E4ZUojOeRYDA+ Y2ZYQRCQkAYfJIqQKuKlCZihbBew5kz9mrqXtgFUF8Ob2RW2zA10o9AetW7s2rf2cwhD 6/GiROiUd96cMFUwWVgkzWE3gWu/F5QWADphI1Mi91WzM9R6eYUiLyKnz8S0420sVv9/ JIZg== X-Gm-Message-State: AOAM530yUelcsbMeoVwSB0WVdhvKJaCrew9Z8j81VrNMIV48GK/Y66zw OlRrlR6PyZ7H8YLdAabRGz8= X-Google-Smtp-Source: ABdhPJwQTDqwvRxq+U5T7h87eKFZua1Dz6/aJbupJ6rps5B27cxrMfXpWPKTvZmoPdRkG6trWPSZJQ== X-Received: by 2002:a05:6402:2881:b0:41d:8c32:917 with SMTP id eg1-20020a056402288100b0041d8c320917mr9355516edb.328.1649842822325; Wed, 13 Apr 2022 02:40:22 -0700 (PDT) Received: from demon-pc.localdomain ([188.24.22.234]) by smtp.gmail.com with ESMTPSA id t1-20020a170906178100b006e7edb2c0bdsm11403265eje.15.2022.04.13.02.40.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Apr 2022 02:40:21 -0700 (PDT) From: Cosmin Tanislav X-Google-Original-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 Subject: [PATCH v1 1/3] dt-bindings: iio: adc: add AD4130 Date: Wed, 13 Apr 2022 12:40:09 +0300 Message-Id: <20220413094011.185269-1-cosmin.tanislav@analog.com> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org 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 --- .../bindings/iio/adc/adi,ad4130.yaml | 255 ++++++++++++++++++ 1 file changed, 255 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..e9dce54e9802 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml @@ -0,0 +1,255 @@ +# 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,ad4130-8-16-lfcsp + - adi,ad4130-8-16-wlcsp + - adi,ad4130-8-24-lfcsp + - adi,ad4130-8-24-wlcsp + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + description: phandle to the master clock (mclk) + + clock-names: + items: + - const: mclk + + interrupts: + minItems: 1 + maxItems: 1 + + interrupt-names: + minItems: 1 + maxItems: 1 + description: + Default if not supplied is dout-int. + items: + enum: + - dout-int + - clk + - p1 + - dout + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + 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,mclk-sel: + description: | + Select the clock. + 0: Internal 76.8kHz clock. + 1: Internal 76.8kHz clock, output to the CLK pin. + 2: External 76.8kHz clock. + 3. External 153.6kHz clock. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1, 2, 3] + default: 0 + + adi,int-ref-en: + description: | + Specify if internal reference should be enabled. + type: boolean + default: true + + adi,bipolar: + description: Specify if the device should be used in bipolar mode. + type: boolean + default: false + + adi,vbias-pins: + description: Analog inputs to apply a voltage bias of (AVDD − AVSS) / 2 to. + items: + minimum: 0 + maximum: 15 + +required: + - compatible + - reg + - interrupts + +patternProperties: + "^channel@([0-9]|1[0-5])$": + type: object + $ref: adc.yaml + + properties: + reg: + description: | + The channel number. + items: + 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 + $ref: adc.yaml + 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, internal reference is used. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1, 2, 3] + default: 2 + + adi,excitation-pin-0: + description: | + Analog input to apply excitation current to while the channel + is active. + 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-nanoamps: + description: | + Excitation current in nanoamps to be applied to pin specified in + adi,excitation-pin-0 while this channel is active. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 100, 10000, 20000, 50000, 100000, 150000, 200000] + default: 0 + + adi,excitation-current-1-nanoamps: + description: | + Excitation current in nanoamps to be applied to pin specified in + adi,excitation-pin-1 while this channel is active. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 100, 10000, 20000, 50000, 100000, 150000, 200000] + default: 0 + + adi,burnout-current-nanoamps: + description: | + Burnout current in nanoamps to be applied for this channel. + $ref: /schemas/types.yaml#/definitions/uint32 + 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: + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + + adc@0 { + compatible = "adi,ad4130-8-24-wlcsp"; + 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>; + /* AIN8, AIN9 */ + diff-channels = <8 9>; + }; + + channel@1 { + reg = <1>; + /* AIN10, AIN11 */ + diff-channels = <10 11>; + }; + + channel@2 { + reg = <2>; + /* Temperature Sensor, DGND */ + diff-channels = <16 19>; + }; + + channel@3 { + reg = <3>; + /* Internal reference, DGND */ + diff-channels = <18 19>; + }; + + channel@4 { + reg = <4>; + /* DGND, DGND */ + diff-channels = <19 19>; + }; + }; + };