From patchwork Sat Nov 28 17:33:41 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 334209 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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 D8BE3C83A81 for ; Sat, 28 Nov 2020 22:22:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A91B72245A for ; Sat, 28 Nov 2020 22:22:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="NgXLvdP9" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733156AbgK1Vt1 (ORCPT ); Sat, 28 Nov 2020 16:49:27 -0500 Received: from mail.kernel.org ([198.145.29.99]:45768 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733189AbgK1SL4 (ORCPT ); Sat, 28 Nov 2020 13:11:56 -0500 Received: from localhost.localdomain (cpc108967-cmbg20-2-0-cust86.5-4.cable.virginm.net [81.101.6.87]) (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 E83BD246D4; Sat, 28 Nov 2020 17:35:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1606584949; bh=QhRj1M5XcWGqykhdQbuDQTyYKfBpV6BiehQdm55EpYY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NgXLvdP9hQsAygC60erbFKdh3q1fLabcxnyrUZiExsMm+yU2KKMN+B3u7qx9NuEV0 4gA9xVq1jeD50SDUHAss2LZnHSgrixivxeZLe0PEtsXqP6onMgN3An4xg0c2gp7uIs 4P15f1ZTk3NpzrvD7GeM53eB+SVO06uhoyuRgB3U= From: Jonathan Cameron To: linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-i2c@vger.kernel.org Cc: Rob Herring , Wolfram Sang , Peter Rosin , Jonathan Cameron , Wolfram Sang Subject: [PATCH v2 1/3] dt-bindings:i2c:i2c-gate: txt to yaml conversion Date: Sat, 28 Nov 2020 17:33:41 +0000 Message-Id: <20201128173343.390165-2-jic23@kernel.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201128173343.390165-1-jic23@kernel.org> References: <20201128173343.390165-1-jic23@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Jonathan Cameron This file provides very little in the way of actual schema but does provide a convenient intro to what an i2c-gate node actually represents. Signed-off-by: Jonathan Cameron Cc: Peter Rosin Cc: Wolfram Sang Link: https://lore.kernel.org/r/20201031181801.742585-2-jic23@kernel.org --- .../devicetree/bindings/i2c/i2c-gate.txt | 41 ------------------- .../devicetree/bindings/i2c/i2c-gate.yaml | 39 ++++++++++++++++++ 2 files changed, 39 insertions(+), 41 deletions(-) diff --git a/Documentation/devicetree/bindings/i2c/i2c-gate.txt b/Documentation/devicetree/bindings/i2c/i2c-gate.txt deleted file mode 100644 index 1846d236e656..000000000000 --- a/Documentation/devicetree/bindings/i2c/i2c-gate.txt +++ /dev/null @@ -1,41 +0,0 @@ -An i2c gate is useful to e.g. reduce the digital noise for RF tuners connected -to the i2c bus. Gates are similar to arbitrators in that you need to perform -some kind of operation to access the i2c bus past the arbitrator/gate, but -there are no competing masters to consider for gates and therefore there is -no arbitration happening for gates. - -Common i2c gate properties. - -- i2c-gate child node - -Required properties for the i2c-gate child node: -- #address-cells = <1>; -- #size-cells = <0>; - -Optional properties for i2c-gate child node: -- Child nodes conforming to i2c bus binding - - -Example : - - /* - An Invensense mpu9150 at address 0x68 featuring an on-chip Asahi - Kasei ak8975 compass behind a gate. - */ - - mpu9150@68 { - compatible = "invensense,mpu9150"; - reg = <0x68>; - interrupt-parent = <&gpio1>; - interrupts = <18 1>; - - i2c-gate { - #address-cells = <1>; - #size-cells = <0>; - - ax8975@c { - compatible = "ak,ak8975"; - reg = <0x0c>; - }; - }; - }; diff --git a/Documentation/devicetree/bindings/i2c/i2c-gate.yaml b/Documentation/devicetree/bindings/i2c/i2c-gate.yaml new file mode 100644 index 000000000000..66472f12a7e2 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-gate.yaml @@ -0,0 +1,39 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/i2c-gate.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Common i2c gate properties + +maintainers: + - Peter Rosin + +description: | + An i2c gate is useful to e.g. reduce the digital noise for RF tuners connected + to the i2c bus. Gates are similar to arbitrators in that you need to perform + some kind of operation to access the i2c bus past the arbitrator/gate, but + there are no competing masters to consider for gates and therefore there is + no arbitration happening for gates. + +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml + +properties: + $nodename: + const: i2c-gate + +additionalProperties: true + +examples: + - | + i2c-gate { + #address-cells = <1>; + #size-cells = <0>; + ak8975@c { + compatible = "ak,ak8975"; + reg = <0x0c>; + }; + }; +... +