From patchwork Sun Jan 24 21:41:22 2021 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: 370014 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, 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 69A1CC43381 for ; Sun, 24 Jan 2021 21:45:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 44356221F9 for ; Sun, 24 Jan 2021 21:45:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726571AbhAXVpC (ORCPT ); Sun, 24 Jan 2021 16:45:02 -0500 Received: from mout.gmx.net ([212.227.17.20]:44747 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726530AbhAXVo6 (ORCPT ); Sun, 24 Jan 2021 16:44:58 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1611524573; bh=ngTCQG3YidRGM9uatLNaoIdxkdT5FvSPUy7gUjLrx78=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date:In-Reply-To:References; b=fzSonySvdOY3WOj72SvnKV6EMG1MNPcNNXCg7eN/+A7qQe1Szpu+mDTkVb0P5s7Cq hdK22t9i+6jmvqxSJPYDRnzEG1HnZzfqHYEOeekBSLhzzU1Vnxq6IkIwFc52C0dkH8 TYgZssEAxUPR7vwQdadV+hXkRVbJN3aYubnJIFkc= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from longitude ([37.201.215.209]) by mail.gmx.net (mrgmx104 [212.227.17.168]) with ESMTPSA (Nemesis) id 1N2Dx8-1m0OWp0lDC-013dMk; Sun, 24 Jan 2021 22:42:53 +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 v9 2/7] dt-bindings: mfd: Add binding for Netronix embedded controller Date: Sun, 24 Jan 2021 22:41:22 +0100 Message-Id: <20210124214127.3631530-3-j.neuschaefer@gmx.net> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210124214127.3631530-1-j.neuschaefer@gmx.net> References: <20210124214127.3631530-1-j.neuschaefer@gmx.net> MIME-Version: 1.0 X-Provags-ID: V03:K1:JIe7A0UYeZlLX5PnpR7cFCKPznxi8JqQH+a8jEEq4mWvs1e2WN3 7aI7VMeWOuj9wh7tokKFnMNfEZiNWbh8FZhggqkKHjCap7oLBswwNLfkk51AbEi/Kq0Mt63 6vvM318fjHDkEIrahMyExq6RuNCcoyRBve3/qct2aZV35ga01TxJF2EastBwTNE2UyvlBrJ F9uNd/UnYF3TfTW4TR1rQ== X-UI-Out-Filterresults: notjunk:1; V03:K0:PsRlcRtmN0E=:T6B8ye0ru9REaopNGDYWNG 4Dj2y8DI9pgKknEM9k7mB4yaNw0gq1kd9V3yTOexzcamPdliu41+RUwfKzjNppFMCXVBlUu8c 4AyJ1QEoDy8qjNAYTuzo5EEucpUtKt+H4WvomHZdIvNz4j1f3ckYdr3JxBtgjotDyP5wiOEV5 L7tCrh0VKmwJ0xnqf+J1DWUi/TzIRKNUIMK8Q9Ue6Jf3VxeNSnQzIRG2rLA1ie9/hKn0btLRn WWjX+XMVURss18lPp8+nMuUL09yKHaWljmwbQnnu081891ZDETSA1+nmzlauTbBLjctpBNYZY Ko924Fc2tozNnGdOYOssqMtUUH5n7aW+3LtqGU10W3MBO3AhFfUG0JW4Hww57YlL/hejvzOAm 2vDP8xZkhffU26i1YTyvaiTFgb5LdnjfqCjPD53FfkmATsxNHzgqVR6ysKgbMzlJjhAtbKL0p 4GeTPM1oJWs8wf4MWX01G9pMgDtxv7UmCCfTKCD+uGmUiDshxguIX3NF2wFwURRtSXnoWvaG0 PAN749r7eWqOSNAEIm4TGuoSRP7ycUTQRORQlJZysFlgOY5KeApGJKdN9+9kqfB4hlQrno0c3 cnk8GhbFMGu27PPErxLFs1IXZ+UEm8Yvz6B621ZnurOmQomG+KWGBEjUvZ/Qq17lPwvc//Sdg l8q3Q9Bzb0slWgskxtQId59xfeOWfO4i2aTe7Imz3znaYsIXT2n3/hiuDSZUimn52HBoTWx1d wOVf8MAqFOHEFNTcQ6OVqdAxi0tZocx1Zg4xOxZ5aetT81FuzsR1HStsCBC2ZnDBLF22fylQP YA4almOZJwHX/wfSpe54pVwNojcevoh7NRNuRa6AMOxPa/veOG4ySbTfGHTo0PvdlOvA74SO4 ClRF9Vf4MgHljrF4FS1Q== 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-v9: - 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: - 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"; + };