From patchwork Tue Dec 8 01:09:55 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: 1412375 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmx.net Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; secure) header.d=gmx.net header.i=@gmx.net header.a=rsa-sha256 header.s=badeba3b8450 header.b=BtUI3TIm; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4Cqhy74Cmjz9sVn for ; Tue, 8 Dec 2020 12:13:19 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726645AbgLHBNL (ORCPT ); Mon, 7 Dec 2020 20:13:11 -0500 Received: from mout.gmx.net ([212.227.15.15]:37375 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726247AbgLHBNJ (ORCPT ); Mon, 7 Dec 2020 20:13:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1607389841; bh=zwgIpukD+PzbwgBGrDejjNFMv1JXBd0sGsF2ybRM7R8=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date:In-Reply-To:References; b=BtUI3TImqSEcmHPyd7QedxOSkoocDu6MvHI8CPtn5R9Qp/3tqcxxZM96SCIm/k+Jq 0KP+W4nOgrRU/RSviAfdyd+FYqZz1xz4p9cYcvTVaymgd1YnaN7YyF1T9rtqotUc5i gDKiLqxr22kcKp5g5ynqrEPtLosmpzeY5z59xXUA= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from longitude ([37.201.214.162]) by mail.gmx.com (mrgmx005 [212.227.17.190]) with ESMTPSA (Nemesis) id 1MdNcA-1kD6ht2N0q-00ZMbv; Tue, 08 Dec 2020 02:10:41 +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=C3=B6nig?= , 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 v6 2/7] dt-bindings: mfd: Add binding for Netronix embedded controller Date: Tue, 8 Dec 2020 02:09:55 +0100 Message-Id: <20201208011000.3060239-3-j.neuschaefer@gmx.net> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201208011000.3060239-1-j.neuschaefer@gmx.net> References: <20201208011000.3060239-1-j.neuschaefer@gmx.net> MIME-Version: 1.0 X-Provags-ID: V03:K1:H6n+tRg6gp1Pqa2RaM+LSuIxVzFop3f1GBwliFyGy8zNr5eglA8 GpnXdcLa+S/eLXy95E04FmKIOu9Ez+zy7/JqjkP2wQiiqrNjritGr0WgnBBTCzSCtE52fOE kjpQtzg908G18m766EnSSepwtkUdn6GVbNXAvLaJc/Ux3VNNF4WyA9cMdq6ge/jX1RMT+Pt A9B5LHzpHmW7bgJYkvdtA== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:0SYESpryKA8=:Z1Y4Va7YiJvg/oRqdG4jtG FEJORfpP2WCnc1aavBAN5OWDkiRfuYVdyMMHvBO2LEgmmBiEUqam7h+xj2wieOO6qRt/7ERUG NyjQ/IKvSAGC/rxG0VOeLlLmBhZDsqDUqVibopSN8Irs+ZmglwxkcYCzzu3hOexU7Q2tPtqie /GIEZ8HTkcLyyyjVSbx2cBAE9wTKhVor7PRPrKRlK6Jfjd0LNirP0gMI8e20hOOqeeC/Q5htN Z6r59fNvi/Jl6vAR6jK0cg6Ev5P7qlwVke1Ems9vq4GEpKuKmMdTaHn1jtrVSbOSIJbZRd3FM 0/MQbqbqt3xnFdvZSfMYzLhpZ7wHUR9ERI4Z6WOUVB9lE3le/7FaQk2SUUol5EAXy9Ve5JysZ MBUZq9Yt5Vox0w6aayQBv62nUYU5+nm8dDDy1Q9HgP7wKGFsuCANkKVM7TAHZ42EjGN8Y4ZaC QXd1F5B4rGlMxtbjhGWWQIvZUWe9MH3rWHvDxYHuzCgSSbxSwGCaW2GFrsJtgYBK/XMxOAmYO GUrTS90diNCiO2vXrrNNszOH77RMoCXhRIPXqIKeBtQh1EaijO+qU4PsLvdt3Aga/9+UvDYtR wUe3ftdgHjLWTH4FEmGk4BEDpeLFZhF1pUn/wZMqAJLgnwel7t2QbthMU3k69xypNJ7C/R8jl 7htTgnAHF2vdYTM5NK3AWaTKU972xgL4j+RSHUFbYB9tNdbWOPiGCBSUuypZOMzzXw0HxFN46 7/xCnl4Bpc3C9YRTQ6o5uaHmWlKi1o1PbSJG0DEaOa59gv9UxRvnpJMFwj34dK9IUCiTAocql fgC/4qmfdsjFbJstzJuwo+/DzC0dYKg6OdvwSydK94RGHyiHXvM2wpEEK0+nruC1naYbDIxwU Re+3USYRc9ZLrSIBsN5A== 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, v6: - 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"; + };