From patchwork Tue Dec 1 01:15:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?J=2E_Neusch=C3=A4fer?= X-Patchwork-Id: 336231 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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,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 81BC8C71156 for ; Tue, 1 Dec 2020 03:19:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2B2AF20725 for ; Tue, 1 Dec 2020 03:19:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=gmx.net header.i=@gmx.net header.b="FSlC2zyl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727612AbgLADSt (ORCPT ); Mon, 30 Nov 2020 22:18:49 -0500 Received: from mout.gmx.net ([212.227.17.20]:45867 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725859AbgLADSs (ORCPT ); Mon, 30 Nov 2020 22:18:48 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1606792583; bh=oMV1BsE+zyZdphaHIIA7I4yA5HiRt24ClTAmEH7qgi0=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date:In-Reply-To:References; b=FSlC2zyl4E9+Oh6GYRbIopFfsFjQ04dd7R4VGLqCIeMzxder+iELESfFECrhgpBlo hVxPYtJK1pFtnywtp7qbxaVyMMrp8DqrJ2D5shTdOrzwgHFvBxH3h6oseY45tvn6EY EU1zhK06FhWuVl2Y2kEYv6Y4+BRZx7wjDpQ6j5Go= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from longitude ([37.201.214.162]) by mail.gmx.com (mrgmx104 [212.227.17.168]) with ESMTPSA (Nemesis) id 1MacOQ-1kDMUP2AYs-00c7ur; Tue, 01 Dec 2020 04:16:23 +0100 From: =?utf-8?q?Jonathan_Neusch=C3=A4fer?= To: linux-kernel@vger.kernel.org Cc: Lee Jones , Rob Herring , =?utf-8?q?Jonathan_Neusch=C3=A4fer?= , Thierry Reding , =?utf-8?q?Uwe_Kleine-K?= =?utf-8?b?w7ZuaWc=?= , Alessandro Zummo , Alexandre Belloni , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , Sam Ravnborg , Linus Walleij , Heiko Stuebner , Stephan Gerhold , Lubomir Rintel , Mark Brown , allen , Mauro Carvalho Chehab , "David S. Miller" , devicetree@vger.kernel.org, linux-pwm@vger.kernel.org, linux-rtc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Heiko Stuebner , Josua Mayer , Andreas Kemnade , Arnd Bergmann , Daniel Palmer , Andy Shevchenko , Rob Herring Subject: [PATCH v5 2/7] dt-bindings: mfd: Add binding for Netronix embedded controller Date: Tue, 1 Dec 2020 02:15:08 +0100 Message-Id: <20201201011513.1627028-3-j.neuschaefer@gmx.net> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201201011513.1627028-1-j.neuschaefer@gmx.net> References: <20201201011513.1627028-1-j.neuschaefer@gmx.net> MIME-Version: 1.0 X-Provags-ID: V03:K1:Vz3vJigvuTH3GzmHI6h4VbmnOp32aE5QRt0GwXcvdVOzIzllyWS i8BVZm0ZfXdpS+MZsTHTJIF8KmT59/cOCJpyhN8zJJp2BnJcDy6bls40rSuAlntjAyXQi8u jUQ3RMxz2WtfSS9a/XLotrBYWsQp6Zv8uCEBMn1rGB7UyIecwwbeIGN5+Xp1EzinOPsO+GA +W7oFQX9jiIxQyb2t+3mw== X-UI-Out-Filterresults: notjunk:1; V03:K0:QQq6oDqUxps=:6T85xH+8S1ysT0AdqBKdwb nXmG6NCoxCSbF1c1dIQDo3gGyPzoiAZXMTppcsdD8eFzmnJoOuSaUrn5hYLSm3O/nfglFO69Q 6bXObsFyagScL01w/nbxYqf9gcto8myDVKxoMxaU6QAFchz746ubYR5PqsapaLQ2YRc/RpgiY LurIj3IyNEBNG0IvB3fmJ1tOD8DBsun5CZrKSAmcAvt61a+1Ji1ktJVKcBR+3By9+a1pKeWAQ UV/HX3GMDWrU1J9dJGd5wz0JVWOVx2ijOix9Bw8XJCUG538sheMEH82nX7DUT8Ul/zSdnV+8Q D4ltVBtFE54LcKULOMYeFuF6XoVxxU6RRp6ONH3mCTpyZSrVq0CdGOIdtDrTgDC7NA+ub9hO/ CsGp6QVsbBqcutezZe8usyo/0p5+aoEVLAOTJzOGEKMvhurY3Bt7+fDxJF13CxV1DlhhhzJXt n4+NWlG1XAZIejiH4VQlJ/NRsflU4YbHVIG6X6O6kAB4r8VdadrXl3GWGoHxjYbyOjJaJbEs1 gFP6PqL8KQPtAWpZCRaiXnWntjcTKCRNf26bQw7UsivGD8SLpGT9Vv2PSsJwT3XqAO5DRF4Ws 2AA+qCnoAeV9n8/egeO29BO6NXjh+HJNq/drbb9WcVgHEz5g6PcFmNoEimH4c4CRZJS6mCsKK fOUYPfa/9Py2ufiT23VxK474NWUZQgoiOU5l3/FmOBZnYVTGvWCIqU+2if2erW0dblh2yPOPT OjfoUHoBh9cC2rU0oCIokRZgaTLkWZV3XnNhhgciOkFqTp7H8g60X8C+/LaGd1OvetML7DZyL a+EKc7+e8+AMd9yLPLxLLu4Kfb9S44uEsopMVMFIGA1EQWYI/Zi8Eya0Y8r8oJRoLp+BnVKvZ Z/wyAbEJUaBLju9+NJlw== Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This EC is found in e-book readers of multiple brands (e.g. Kobo, Tolino), and is typically implemented as a TI MSP430 microcontroller. It controls different functions of the system, such as power on/off, RTC, PWM for the backlight. The exact functionality provided can vary between boards. Signed-off-by: Jonathan Neuschäfer Reviewed-by: Rob Herring --- v5: - no changes v4: - Add R-b tag v3: - https://lore.kernel.org/lkml/20200924192455.2484005-3-j.neuschaefer@gmx.net/ - Remove binding in text form patch description again - Add additionalProperties: false - Remove interrupt-controller property from example - Merge pwm/rtc nodes into main node v2: - https://lore.kernel.org/lkml/20200905133230.1014581-3-j.neuschaefer@gmx.net/ - Add the plaintext DT binding for comparison --- .../bindings/mfd/netronix,ntxec.yaml | 76 +++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/netronix,ntxec.yaml -- 2.29.2 diff --git a/Documentation/devicetree/bindings/mfd/netronix,ntxec.yaml b/Documentation/devicetree/bindings/mfd/netronix,ntxec.yaml new file mode 100644 index 0000000000000..59a630025f52f --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/netronix,ntxec.yaml @@ -0,0 +1,76 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/netronix,ntxec.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Netronix Embedded Controller + +maintainers: + - Jonathan Neuschäfer + +description: | + This EC is found in e-book readers of multiple brands (e.g. Kobo, Tolino), and + is typically implemented as a TI MSP430 microcontroller. + +properties: + compatible: + const: netronix,ntxec + + reg: + items: + - description: The I2C address of the EC + + system-power-controller: + type: boolean + description: See Documentation/devicetree/bindings/power/power-controller.txt + + interrupts: + minItems: 1 + description: + The EC can signal interrupts via a GPIO line + + "#pwm-cells": + const: 2 + description: | + Number of cells in a PWM specifier. + + The following PWM channels are supported: + - 0: The PWM channel controlled by registers 0xa1-0xa7 + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + #include + i2c { + #address-cells = <1>; + #size-cells = <0>; + + ec: embedded-controller@43 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_ntxec>; + + compatible = "netronix,ntxec"; + reg = <0x43>; + system-power-controller; + interrupt-parent = <&gpio4>; + interrupts = <11 IRQ_TYPE_EDGE_FALLING>; + #pwm-cells = <2>; + }; + }; + + backlight { + compatible = "pwm-backlight"; + pwms = <&ec 0 50000>; + power-supply = <&backlight_regulator>; + }; + + backlight_regulator: regulator-dummy { + compatible = "regulator-fixed"; + regulator-name = "backlight"; + };