From patchwork Sat Oct 31 13:40:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 314669 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8DF0DC61DD8 for ; Sat, 31 Oct 2020 13:44:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6116220756 for ; Sat, 31 Oct 2020 13:44:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604151848; bh=+YW/tMOEk/xPFRdslAjNWOGLHIDvxC1ULIHOsab+wtI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Cez+lfNdns4qQYnjEVpAOaxHIvGYx83xkOdxj0hs9FcS7e8cdRXYtCT1yD3LOn5oU 8zEeZOFqHTcN9QYmHyD2Fewop/iekS6B+kvU1XJrZUqWxbRcbh9cwAKdlGRL/FkZXG aVgjQSOsvk6xubYDBtFSzIOduGYlCEjW7C1USvHA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727713AbgJaNoH (ORCPT ); Sat, 31 Oct 2020 09:44:07 -0400 Received: from mail.kernel.org ([198.145.29.99]:43218 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727692AbgJaNoH (ORCPT ); Sat, 31 Oct 2020 09:44:07 -0400 Received: from localhost.localdomain (cpc149474-cmbg20-2-0-cust94.5-4.cable.virginm.net [82.4.196.95]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id BF4E920885; Sat, 31 Oct 2020 13:44:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604151847; bh=+YW/tMOEk/xPFRdslAjNWOGLHIDvxC1ULIHOsab+wtI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1ZDF7cdevjFU6zErFfrTBXe1JKHKH6x4zqfuM1whzhZICq9pGqcfQi0hTmK/USh/m dhNRWSK+8mRLSqVpPNXsAnE/kABiLyKZkkKD7JfAipgHrxqR1p3MFyE9hKSj2+Lbao 6frgnfy3D6IMAVCudT92ndWtf4dmXYzOiD5iI00I= From: Jonathan Cameron To: linux-iio@vger.kernel.org, Rob Herring , devicetree@vger.kernel.org Cc: Jonathan Cameron , Rob Herring , Lars-Peter Clausen Subject: [PATCH v2 17/29] dt-bindings:iio:dac:adi,ad7303 yaml conversion Date: Sat, 31 Oct 2020 13:40:58 +0000 Message-Id: <20201031134110.724233-18-jic23@kernel.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201031134110.724233-1-jic23@kernel.org> References: <20201031134110.724233-1-jic23@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Jonathan Cameron Converted to maintain the requirement for Vdd-supply as per original file. It is possible we could relax this requirement to make it at least one of Vdd-supply and REF-supply. We need to establish the scaling of the output channel and if REF-supply is provided that is used instead of Vdd-supply, hence I cannot see why a dummy regulator cannot be used for Vdd-supply if this happens. For now, let us keep it simple. Drop adi,use-external-reference from binding example as no such binding exists. Signed-off-by: Jonathan Cameron Reviewed-by: Rob Herring Cc: Lars-Peter Clausen --- .../devicetree/bindings/iio/dac/ad7303.txt | 23 --------- .../bindings/iio/dac/adi,ad7303.yaml | 50 +++++++++++++++++++ 2 files changed, 50 insertions(+), 23 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/dac/ad7303.txt b/Documentation/devicetree/bindings/iio/dac/ad7303.txt deleted file mode 100644 index 914610f0556e..000000000000 --- a/Documentation/devicetree/bindings/iio/dac/ad7303.txt +++ /dev/null @@ -1,23 +0,0 @@ -Analog Devices AD7303 DAC device driver - -Required properties: - - compatible: Must be "adi,ad7303" - - reg: SPI chip select number for the device - - spi-max-frequency: Max SPI frequency to use (< 30000000) - - Vdd-supply: Phandle to the Vdd power supply - -Optional properties: - - REF-supply: Phandle to the external reference voltage supply. This should - only be set if there is an external reference voltage connected to the REF - pin. If the property is not set Vdd/2 is used as the reference voltage. - -Example: - - ad7303@4 { - compatible = "adi,ad7303"; - reg = <4>; - spi-max-frequency = <10000000>; - Vdd-supply = <&vdd_supply>; - adi,use-external-reference; - REF-supply = <&vref_supply>; - }; diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad7303.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad7303.yaml new file mode 100644 index 000000000000..1f0037152095 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad7303.yaml @@ -0,0 +1,50 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/dac/adi,ad7303.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices AD7303 DAC + +maintainers: + - Lars-Peter Clausen + +properties: + compatible: + const: adi,ad7303 + + reg: + maxItems: 1 + + Vdd-supply: + description: + Used to calculate output channel scalling if REF-supply not specified. + REF-supply: + description: + If not provided, Vdd/2 is used as the reference voltage. + + spi-max-frequency: + maximum: 30000000 + +required: + - compatible + - reg + - Vdd-supply + +additionalProperties: false + +examples: + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + + dac@4 { + compatible = "adi,ad7303"; + reg = <4>; + spi-max-frequency = <10000000>; + Vdd-supply = <&vdd_supply>; + REF-supply = <&vref_supply>; + }; + }; +...