From patchwork Fri Nov 8 13:09:44 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Song Qiang X-Patchwork-Id: 11234815 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C274D1709 for ; Fri, 8 Nov 2019 13:09:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8D43A2178F for ; Fri, 8 Nov 2019 13:09:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="AgNwXhZj" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727559AbfKHNJz (ORCPT ); Fri, 8 Nov 2019 08:09:55 -0500 Received: from mail-pg1-f196.google.com ([209.85.215.196]:34367 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726879AbfKHNJz (ORCPT ); Fri, 8 Nov 2019 08:09:55 -0500 Received: by mail-pg1-f196.google.com with SMTP id e4so3951436pgs.1; Fri, 08 Nov 2019 05:09:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=GcSRBv+6yTz1aWV2wpvc++0ONMW5Gc651FnwYD+LCXY=; b=AgNwXhZjuQufrlApx1Jt4Pc0HtcVyvwwVSLlsT0Y0iUejJKTiLItU0kX2vW9nbTulQ y8oUnlCp/keIMjsp4eE1qOqq6FaCFY7BpYN2GaPGHicCpYe02HrCmJt+Pyou5zsntIlq hvN+AXnd4MMjA1DvaTIrq1RRnkizwggFpRaFwKqgyAjlHPFlWecpJAWNmK9MS0000bkL ZoI9CRzQM75ObTfSPARlY7juiBvzzdVnTqGyqv9X/Qg1P/QzI2sgijADyR9bZcD/dJed +7BqyiqP2gyi2g2T4qbg0sO2jCexf6NG2a4XdjWEcxim3ikpt8X2b46p/MCKk5jCgK+Z wrJw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=GcSRBv+6yTz1aWV2wpvc++0ONMW5Gc651FnwYD+LCXY=; b=pGiBRXEAWVxDmWOIx4UN0l5lIR44rcZj7fU0OIzjXVBpQsUmuLrxXKGnErl73u0+mO CAAEyGfakU7uwL4SIPlTCx0f+oF3/x37xE64wyEYIJ1WKvKYQoz5iHUSEbJah/WhQGnP ZhAVxbW8EAeNvgFcrbdHoH0rVMZFc2egEJAxOmOcl3hD1cbG7VDtECsScth2aF0g/v4k mMOYTiVUUwj+ynYv6lFU4ssH4pUyOhZ+qlEW/uvG03bExUmkWoMIXqzmpUJd4isPb9jT ePimt8cIUF1mO6eTttKgyGa61+ZXWcK9wt0Kf5nP3swSMNSUqNDXISfGA4nslJcRm/fG ExFw== X-Gm-Message-State: APjAAAXumxfSIguNUAq/QHN6LAUsJ0ra7ESkJri4PPssK6jWzzGdL4Qr gBH8c3n/DoCWQA3xo/GFC1I= X-Google-Smtp-Source: APXvYqxxrcn6kFUEnC0t1jD0cIy6EM9JE3qdhbm9La/8uN+duByFOP1K8RDli97qPAJSimst4cYNSA== X-Received: by 2002:a63:f94e:: with SMTP id q14mr7489585pgk.411.1573218593385; Fri, 08 Nov 2019 05:09:53 -0800 (PST) Received: from localhost (97.64.17.87.16clouds.com. [97.64.17.87]) by smtp.gmail.com with ESMTPSA id n21sm3384316pjq.13.2019.11.08.05.09.51 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 08 Nov 2019 05:09:52 -0800 (PST) From: Song Qiang To: lars@metafoo.de, Michael.Hennerich@analog.com, stefan.popa@analog.com, jic23@kernel.org, knaack.h@gmx.de, pmeerw@pmeerw.net, lgirdwood@gmail.com, broonie@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com Cc: linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Song Qiang Subject: [PATCH 1/3] dt-bindings: iio: adc: add support for AD5940 Date: Fri, 8 Nov 2019 21:09:44 +0800 Message-Id: <20191108130946.14740-1-songqiang1304521@gmail.com> X-Mailer: git-send-email 2.17.1 Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Add yaml devicetree description file and a header file for helping configure positive and negtive input of AD5940. Signed-off-by: Song Qiang Acked-by: Alexandru Ardelean --- .../bindings/iio/adc/adi,ad5940.yaml | 240 ++++++++++++++++++ include/dt-bindings/iio/adc/adi,ad5940.h | 52 ++++ 2 files changed, 292 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad5940.yaml create mode 100644 include/dt-bindings/iio/adc/adi,ad5940.h diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad5940.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad5940.yaml new file mode 100644 index 000000000000..f7f034fdd8ec --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad5940.yaml @@ -0,0 +1,240 @@ +# SPDX-License-Identifier: GPL-2.0 +# Copyright 2019 Analog Devices Inc. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/bindings/iio/adc/adi,ad5940.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices AD5940 Device Tree Bindings + +maintainers: + - Song Qiang + +description: | + Analog Devices AD5940 High Precision, Impedance, and Electrochemical Front End. + https://www.analog.com/media/en/technical-documentation/data-sheets/AD5940.pdf + +properties: + compatible: + enum: + - adi,ad5940 + + reg: + maxItems: 1 + + vref-supply: + description: + The regulator to be used to supply the reference voltage. + maxItems: 1 + + adi,interrupt-io: + description: + Output GPIO index of interrupt controller of AD5940. + maxItems: 1 + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + - enum: [0, 3, 6, 7] + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + +required: + - compatible + - reg + - interrupts + - adi,interrupt-io + +patternProperties: + # 'channel@0-255' + "^channel@([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])$": + type: object + description: | + Represents the external channels which are connected to the ADC. + See Documentation/devicetree/bindings/iio/adc/adc.txt. + properties: + reg: + description: + Index of this channel, must be starting from 0. + maxItems: 1 + + diff-channels: + description: + Positive input and negtive input of the ADC buffer of this channel. + Input candidates are defined in include/dt-bindings/iio/adc/adi,ad5940.h. + minItems: 2 + maxItems: 2 + items: + - description: Positive input channel + - enum: + - AD5940_ADC_INPUTP_EXCITATION + - AD5940_ADC_INPUTP_FLOATING + - AD5940_ADC_INPUTP_HSTIA + - AD5940_ADC_INPUTP_LPTIA_LP + - AD5940_ADC_INPUTP_AIN0 + - AD5940_ADC_INPUTP_AIN1 + - AD5940_ADC_INPUTP_AIN2 + - AD5940_ADC_INPUTP_AIN3 + - AD5940_ADC_INPUTP_AVDD_2 + - AD5940_ADC_INPUTP_DVDD_2 + - AD5940_ADC_INPUTP_AVDD_REG_2 + - AD5940_ADC_INPUTP_TEMP + - AD5940_ADC_INPUTP_VBIAS_CAP + - AD5940_ADC_INPUTP_DE0 + - AD5940_ADC_INPUTP_SE0 + - AD5940_ADC_INPUTP_VREF_2V5_2 + - AD5940_ADC_INPUTP_VREF_1V82 + - AD5940_ADC_INPUTP_P_TEMP_N + - AD5940_ADC_INPUTP_AIN4 + - AD5940_ADC_INPUTP_AIN6 + - AD5940_ADC_INPUTP_VZERO + - AD5940_ADC_INPUTP_VBIAS0 + - AD5940_ADC_INPUTP_VCE0 + - AD5940_ADC_INPUTP_VRE0 + - AD5940_ADC_INPUTP_VCE0_2 + - AD5940_ADC_INPUTP_LPTIA + - AD5940_ADC_INPUTP_AGND_REF + + - description: Negtive input channel + - enum: + # Negtive input candidates + - AD5940_ADC_INPUTN_FLOATING + - AD5940_ADC_INPUTN_HSTIA + - AD5940_ADC_INPUTN_LPTIA + - AD5940_ADC_INPUTN_AIN0 + - AD5940_ADC_INPUTN_AIN1 + - AD5940_ADC_INPUTN_AIN2 + - AD5940_ADC_INPUTN_AIN3 + - AD5940_ADC_INPUTN_VBIAS_CA8 + - AD5940_ADC_INPUTN_TEMP_N + - AD5940_ADC_INPUTN_AIN4 + - AD5940_ADC_INPUTN_AIN6 + - AD5940_ADC_INPUTN_VZERO + - AD5940_ADC_INPUTN_VBIAS0 + - AD5940_ADC_INPUTN_EXCITATION + + channel-name: + description: + Any string format name you would like to assign to this channel. + maxItems: 1 + + required: + - reg + - diff-channels + - channel-name + +examples: + - | + ad5940: ad5940@0 { + compatible = "adi,ad5940"; + reg = <0>; + spi-max-frequency = <16000000>; + vref-supply = <&adc_vref>; + interrupt-parent = <&gpio>; + interrupts = <24 2>; + + adi,interrupt-io = <0>; + + #address-cells = <1>; + #size-cells = <0>; + + channel@0 { + reg = <0>; + diff-channels = ; + channel-name = "Vce-Vbias"; + }; + + channel@1 { + reg = <1>; + diff-channels = ; + channel-name = "Vre-Vbias"; + }; + + channel@2 { + reg = <2>; + diff-channels = ; + channel-name = "Vse-Vbias"; + }; + + channel@3 { + reg = <3>; + diff-channels = ; + channel-name = "Vde-Vbias"; + }; + + channel@4 { + reg = <4>; + diff-channels = ; + channel-name = "ain0-Vbias"; + }; + + channel@5 { + reg = <5>; + diff-channels = ; + channel-name = "ain1-Vbias"; + }; + + channel@6 { + reg = <6>; + diff-channels = ; + channel-name = "ain2-Vbias"; + }; + + channel@7 { + reg = <7>; + diff-channels = ; + channel-name = "ain3-Vbias"; + }; + + channel@8 { + reg = <8>; + diff-channels = ; + channel-name = "ain4-Vbias"; + }; + + channel@9 { + reg = <9>; + diff-channels = ; + channel-name = "ain6-Vbias"; + }; + + channel@10 { + reg = <10>; + diff-channels = ; + channel-name = "Low power TIA DC"; + }; + + channel@11 { + reg = <11>; + diff-channels = ; + channel-name = "Low power TIA AC"; + }; + + channel@12 { + reg = <12>; + diff-channels = ; + channel-name = "High Speed TIA"; + }; + + channel@13 { + reg = <13>; + diff-channels = ; + channel-name = "Temperature"; + }; + }; diff --git a/include/dt-bindings/iio/adc/adi,ad5940.h b/include/dt-bindings/iio/adc/adi,ad5940.h new file mode 100644 index 000000000000..c17826f2f654 --- /dev/null +++ b/include/dt-bindings/iio/adc/adi,ad5940.h @@ -0,0 +1,52 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * This header provides constants for configuring the AD5940 AFE + */ + +#ifndef _DT_BINDINGS_IIO_ADC_AD5940_H +#define _DT_BINDINGS_IIO_ADC_AD5940_H + +#define AD5940_ADC_INPUTN_FLOATING 0 +#define AD5940_ADC_INPUTN_HSTIA 1 +#define AD5940_ADC_INPUTN_LPTIA 2 +#define AD5940_ADC_INPUTN_AIN0 4 +#define AD5940_ADC_INPUTN_AIN1 5 +#define AD5940_ADC_INPUTN_AIN2 6 +#define AD5940_ADC_INPUTN_AIN3 7 +#define AD5940_ADC_INPUTN_VBIAS_CA8 10 +#define AD5940_ADC_INPUTN_TEMP_N 11 +#define AD5940_ADC_INPUTN_AIN4 12 +#define AD5940_ADC_INPUTN_AIN6 14 +#define AD5940_ADC_INPUTN_VZERO 16 +#define AD5940_ADC_INPUTN_VBIAS0 17 +#define AD5940_ADC_INPUTN_EXCITATION 20 + +#define AD5940_ADC_INPUTP_FLOATING 0 +#define AD5940_ADC_INPUTP_HSTIA 1 +#define AD5940_ADC_INPUTP_LPTIA_LP 2 +#define AD5940_ADC_INPUTP_AIN0 4 +#define AD5940_ADC_INPUTP_AIN1 5 +#define AD5940_ADC_INPUTP_AIN2 6 +#define AD5940_ADC_INPUTP_AIN3 7 +#define AD5940_ADC_INPUTP_AVDD_2 8 +#define AD5940_ADC_INPUTP_DVDD_2 9 +#define AD5940_ADC_INPUTP_AVDD_REG_2 10 +#define AD5940_ADC_INPUTP_TEMP 11 +#define AD5940_ADC_INPUTP_VBIAS_CAP 12 +#define AD5940_ADC_INPUTP_DE0 13 +#define AD5940_ADC_INPUTP_SE0 14 +#define AD5940_ADC_INPUTP_VREF_2V5_2 16 +#define AD5940_ADC_INPUTP_VREF_1V82 18 +#define AD5940_ADC_INPUTP_P_TEMP_N 19 +#define AD5940_ADC_INPUTP_AIN4 20 +#define AD5940_ADC_INPUTP_AIN6 22 +#define AD5940_ADC_INPUTP_VZERO 23 +#define AD5940_ADC_INPUTP_VBIAS0 24 +#define AD5940_ADC_INPUTP_VCE0 25 +#define AD5940_ADC_INPUTP_VRE0 26 +#define AD5940_ADC_INPUTP_VCE0_2 31 +#define AD5940_ADC_INPUTP_LPTIA 33 +#define AD5940_ADC_INPUTP_AGND_REF 35 +#define AD5940_ADC_INPUTP_EXCITATION 36 + +#endif /* _DT_BINDINGS_IIO_ADC_AD5940 */