From patchwork Tue Nov 13 11:21:01 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Popa X-Patchwork-Id: 997024 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=analog.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=analog.onmicrosoft.com header.i=@analog.onmicrosoft.com header.b="iHZfKczz"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 42vQDW5cFdz9s47 for ; Tue, 13 Nov 2018 22:21:15 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732572AbeKMVSx (ORCPT ); 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Tue, 13 Nov 2018 06:21:09 -0500 From: Stefan Popa To: , CC: , , , , , , , , , Subject: [PATCH v5 2/4] dt-bindings: iio: adc: Add common ADCs properties to a separate file Date: Tue, 13 Nov 2018 13:21:01 +0200 Message-ID: <1542108061-3471-1-git-send-email-stefan.popa@analog.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-ADIRoutedOnPrem: True X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-Forefront-Antispam-Report: CIP:137.71.25.55; IPV:NLI; CTRY:US; EFV:NLI; SFV:NSPM; SFS:(10009020)(979002)(39860400002)(396003)(376002)(346002)(136003)(2980300002)(438002)(199004)(189003)(48376002)(50226002)(305945005)(6666004)(356004)(7636002)(4326008)(486006)(54906003)(47776003)(246002)(50466002)(36756003)(44832011)(8936002)(476003)(126002)(107886003)(7416002)(106002)(2616005)(426003)(106466001)(26005)(5660300001)(110136005)(2906002)(316002)(51416003)(77096007)(7696005)(72206003)(336012)(508600001)(16586007)(186003)(8676002)(969003)(989001)(999001)(1009001)(1019001); DIR:OUT; SFP:1101; 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Ip=[137.71.25.55]; Helo=[nwd2mta1.analog.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN2PR03MB2271 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org There are several ADC drivers that depend on the same device tree bindings. Rather than continue to duplicate the properties, this patch adds a common adc binding document that can be referenced. For beginning, only two properties are documented. Signed-off-by: Stefan Popa Reviewed-by: Rob Herring --- Changes in v2, v3: - N/A. Changes in v4: - Added this commit. Changes in v5: - Nothing changed. Documentation/devicetree/bindings/iio/adc/adc.txt | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/adc.txt diff --git a/Documentation/devicetree/bindings/iio/adc/adc.txt b/Documentation/devicetree/bindings/iio/adc/adc.txt new file mode 100644 index 0000000..5bbaa33 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adc.txt @@ -0,0 +1,23 @@ +Common ADCs properties + +Optional properties for child nodes: +- bipolar : Boolean, if set the channel is used in bipolar mode. +- diff-channels : Differential channels muxed for this ADC. The first value + specifies the positive input pin, the second value the negative + input pin. + +Example: + adc@0 { + compatible = "some,adc"; + ... + channel@0 { + bipolar; + diff-channels = <0 1>; + ... + }; + + channel@1 { + diff-channels = <2 3>; + ... + }; + }; From patchwork Tue Nov 13 11:22:18 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Stefan Popa X-Patchwork-Id: 997025 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=analog.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=analog.onmicrosoft.com header.i=@analog.onmicrosoft.com header.b="iwF2q8Sh"; 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Tue, 13 Nov 2018 03:22:31 -0800 Received: from linux.ad.analog.com (10.50.1.118) by NWD2HUBCAS7.ad.analog.com (10.64.69.107) with Microsoft SMTP Server id 14.3.301.0; Tue, 13 Nov 2018 06:22:30 -0500 From: Stefan Popa To: , CC: , , , , , , , , , Subject: [PATCH v5 4/4] dt-bindings: iio: adc: Add docs for ad7124 Date: Tue, 13 Nov 2018 13:22:18 +0200 Message-ID: <1542108138-3711-1-git-send-email-stefan.popa@analog.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-ADIRoutedOnPrem: True X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-Forefront-Antispam-Report: CIP:137.71.25.55; IPV:NLI; CTRY:US; EFV:NLI; SFV:NSPM; SFS:(10009020)(376002)(39860400002)(136003)(396003)(346002)(2980300002)(438002)(199004)(189003)(7696005)(7416002)(6306002)(8676002)(356004)(50466002)(6666004)(336012)(23676004)(106002)(72206003)(316002)(966005)(7636002)(508600001)(246002)(305945005)(110136005)(8936002)(44832011)(50226002)(426003)(54906003)(5660300001)(476003)(126002)(486006)(107886003)(1720100001)(2616005)(5820100001)(47776003)(4326008)(2906002)(36756003)(77096007)(106466001)(186003)(2870700001)(26005); 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Ip=[137.71.25.55]; Helo=[nwd2mta1.analog.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BLUPR03MB549 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add support for Analog Devices AD7124 4-channels and 8-channels ADC. Signed-off-by: Stefan Popa Reviewed-by: Rob Herring --- Changes in v2: - Nothing changed. Changes in v3: - Removed the "adi,channels" property. - Used the "reg" property to get the channel number and "adi,diff-channels" for the differential pins. The "adi,channel-number" property was removed. - adi,bipolar is of boolean type. Changes in v4: - Used the bipolar and diff-channels properties defined in the new adc.txt doc. Changes in v5: - Removed the gain and odr properties from the example. .../devicetree/bindings/iio/adc/adi,ad7124.txt | 75 ++++++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 76 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7124.txt diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7124.txt b/Documentation/devicetree/bindings/iio/adc/adi,ad7124.txt new file mode 100644 index 0000000..416273d --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7124.txt @@ -0,0 +1,75 @@ +Analog Devices AD7124 ADC device driver + +Required properties for the AD7124: + - compatible: Must be one of "adi,ad7124-4" or "adi,ad7124-8" + - reg: SPI chip select number for the device + - spi-max-frequency: Max SPI frequency to use + see: Documentation/devicetree/bindings/spi/spi-bus.txt + - clocks: phandle to the master clock (mclk) + see: Documentation/devicetree/bindings/clock/clock-bindings.txt + - clock-names: Must be "mclk". + - interrupts: IRQ line for the ADC + see: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt + + Required properties: + * #address-cells: Must be 1. + * #size-cells: Must be 0. + + Subnode(s) represent the external channels which are connected to the ADC. + Each subnode represents one channel and has the following properties: + Required properties: + * reg: The channel number. It can have up to 4 channels on ad7124-4 + and 8 channels on ad7124-8, numbered from 0 to 15. + * diff-channels: see: Documentation/devicetree/bindings/iio/adc/adc.txt + + Optional properties: + * bipolar: see: Documentation/devicetree/bindings/iio/adc/adc.txt + * adi,reference-select: Select the reference source to use when + converting on the the specific channel. Valid values are: + 0: REFIN1(+)/REFIN1(−). + 1: REFIN2(+)/REFIN2(−). + 3: AVDD + If this field is left empty, internal reference is selected. + +Optional properties: + - refin1-supply: refin1 supply can be used as reference for conversion. + - refin2-supply: refin2 supply can be used as reference for conversion. + - avdd-supply: avdd supply can be used as reference for conversion. + +Example: + adc@0 { + compatible = "adi,ad7124-4"; + reg = <0>; + spi-max-frequency = <5000000>; + interrupts = <25 2>; + interrupt-parent = <&gpio>; + refin1-supply = <&adc_vref>; + clocks = <&ad7124_mclk>; + clock-names = "mclk"; + + #address-cells = <1>; + #size-cells = <0>; + + channel@0 { + reg = <0>; + diff-channels = <0 1>; + adi,reference-select = <0>; + }; + + channel@1 { + reg = <1>; + bipolar; + diff-channels = <2 3>; + adi,reference-select = <0>; + }; + + channel@2 { + reg = <2>; + diff-channels = <4 5>; + }; + + channel@3 { + reg = <3>; + diff-channels = <6 7>; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 3a1bfcb..f2fa508 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -845,6 +845,7 @@ L: linux-iio@vger.kernel.org W: http://ez.analog.com/community/linux-device-drivers S: Supported F: drivers/iio/adc/ad7124.c +F: Documentation/devicetree/bindings/iio/adc/adi,ad7124.txt ANALOG DEVICES INC AD9389B DRIVER M: Hans Verkuil