From patchwork Wed May 1 19:30:16 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adam Michaelis X-Patchwork-Id: 10925521 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9F47A933 for ; Wed, 1 May 2019 19:30:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 883FD28E23 for ; Wed, 1 May 2019 19:30:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7BB6128E31; Wed, 1 May 2019 19:30:32 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 60C1B28E2B for ; Wed, 1 May 2019 19:30:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726088AbfEATa3 (ORCPT ); Wed, 1 May 2019 15:30:29 -0400 Received: from secvs01.rockwellcollins.com ([205.175.225.240]:15440 "EHLO secvs01.rockwellcollins.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726101AbfEATa3 (ORCPT ); Wed, 1 May 2019 15:30:29 -0400 X-RC-All-From: , 205.175.225.60, No hostname, adam.michaelis@rockwellcollins.com, Adam Michaelis , , X-RC-Attachments: , , X-RC-RemoteIP: 205.175.225.60 X-RC-RemoteHost: No hostname X-RC-IP-Hostname: secip01.rockwellcollins.com X-RC-IP-MID: 277223677 X-RC-IP-Group: GOOGLE_RELAYED X-RC-IP-Policy: $GOOGLE_RELAYED X-RC-IP-SBRS: None Received: from unknown (HELO mail-oi1-f199.google.com) ([205.175.225.60]) by secvs01.rockwellcollins.com with ESMTP/TLS/AES128-GCM-SHA256; 01 May 2019 14:30:27 -0500 Received: by mail-oi1-f199.google.com with SMTP id u135so82232oia.2 for ; Wed, 01 May 2019 12:30:27 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc; bh=F4PFKivrCCt8E/bjYsH5ykIrQ9bNtH2T/uQxJDWTUxk=; b=iBa5lC4oNWkGHH06vVkgPzyIxegvjFG3w5BebkYQ0Pgz7va9OVc425z38zWn7II6ud mRVN73gOj6fycj7FrtqbR7wmNq6HIkI+cRtp0GnRWbH517JYuz989BFdviopFarwW9Uz DK8mUU9DJciH6COz0HV9jgFesaukrzeMFU96i7vzjPRAT6xGzcwAn0H5aSBP+3BPyH0V Gm+7hs+LvnbJUo/Nq3xggDdYwVTcR16wm1crtUmBoVosm+Wb1PuRMyWFr/SDFof0DUc3 cTrsAbtHR6U2l05z8G67NtUvURxVkxkyoaJfyDMBnFsbfjBvEyqxpKhF1Q8WWkQ8Q0gU 6SaQ== X-Gm-Message-State: APjAAAWe2wkgl+dA8rVJ8OwXjE8xYbjS5f8FFPTp47JR6H6d5MMJkSPT mMI3vykiIBCl3UrMlW5luMr/R+dCEuVZh+a2zpwVUKFRv9hoM4u8SITrKBky4Ao4oV1w9gMJn0K TosEfOBp1g1IYuiFrLctCNHmK//lXeZ5JbBh6fdCSKBUGaMOsjsh0/rs= X-Received: by 2002:aca:c246:: with SMTP id s67mr7812470oif.159.1556739027174; Wed, 01 May 2019 12:30:27 -0700 (PDT) X-Google-Smtp-Source: APXvYqzwl9jaLwlQF3bo/hxPu7ykO2nZUNUL3iGGE/m6q02Ansh3+g/noBeDiTGYKszlPtmb9P02rIBb3GTVamr8Acs= X-Received: by 2002:aca:c246:: with SMTP id s67mr7812457oif.159.1556739026959; Wed, 01 May 2019 12:30:26 -0700 (PDT) MIME-Version: 1.0 From: Adam Michaelis Date: Wed, 1 May 2019 14:30:16 -0500 Message-ID: Subject: [PATCH 2/6] dt-bindings: iio: ad7949: Add adi,reference-select To: lars@metafoo.de, michael.hennerich@analog.com, jic23@kernel.org, knaack.h@gmx.de, pmeerw@pmeerw.net, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, robh+dt@kernel.org, mark.rutland@arm.com, charles-antoine.couret@essensium.com, devicetree@vger.kernel.org Cc: Clayton Shotwell , Brandon Maier Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From d228a1a119e33aff91f481fb8ab301a027b5a4ac Mon Sep 17 00:00:00 2001 From: Adam Michaelis Date: Thu, 25 Apr 2019 15:22:00 -0500 Subject: [PATCH 2/6] dt-bindings: iio: ad7949: Add adi,reference-select Adding optional parameter to AD7949 to specify the source for the reference voltage signal. Default value is maintaned with option '6' to match previous version of driver. Signed-off-by: Adam Michaelis --- Sorry about the re-sends - GMail inserted HTML on me and it bounced from vger. --- .../devicetree/bindings/iio/adc/ad7949.txt | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/adc/ad7949.txt b/Documentation/devicetree/bindings/iio/adc/ad7949.txt index c7f5057356b1..14ee9a2cb2a5 100644 --- a/Documentation/devicetree/bindings/iio/adc/ad7949.txt +++ b/Documentation/devicetree/bindings/iio/adc/ad7949.txt @@ -6,11 +6,29 @@ Required properties: * "adi,ad7682" * "adi,ad7689" - reg: spi chip select number for the device - - vref-supply: The regulator supply for ADC reference voltage -Example: +Optional properties: + - adi,reference-select: Select the reference voltage source to use + when converting the input voltages. Valid values are: + 0: Internal 2.5V reference; temperature sensor enabled + 1: Internal 4.096V reference; temperature sensor enabled + 2: External reference, temperature sensor enabled, no buffer + 3: External reference, temperature sensor enabled, buffer enabled + 6: External reference, temperature sensor disabled, no buffer + 7: External reference, temperature sensor disabled, buffer enabled + - vref-supply: The regulator supply for ADC reference voltage. Required + if external reference selected by 'adi,reference-select'. + +Examples: adc@0 { compatible = "adi,ad7949"; reg = <0>; + adi,reference-select = <2>; vref-supply = <&vdd_supply>; }; + +adc@0 { + compatible = "adi,ad7949"; + reg = <0>; + adi,reference-select = <0>; +};