From patchwork Sat Jan 9 18:02:15 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: 1424146 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@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=linux-pwm-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=CtWdOAHJ; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4DCnyD0mXzz9sWK for ; Sun, 10 Jan 2021 05:08:04 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726001AbhAISHb (ORCPT ); Sat, 9 Jan 2021 13:07:31 -0500 Received: from mout.gmx.net ([212.227.17.21]:45599 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726006AbhAISHZ (ORCPT ); Sat, 9 Jan 2021 13:07:25 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1610215499; bh=BXFHLRrmZEFTrHUZU9YWQgsUIyoTn9ioNYRTBZCq8QA=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date:In-Reply-To:References; b=CtWdOAHJOrULK+8y9ULVssGZX3DKKVr54WAE0t5k7qTIMQL/glXpkT5l+gidEyD6V kK319yoD0SttSOgLupxyKjpAYi28y9SdTCnbgSwNJJCc4yekfc0I0AAQaVj4e9Nl8a VX5bGSg9x73xEPQWxWF5OXoBmcn2gsFh87ql0z9E= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from longitude ([37.201.215.57]) by mail.gmx.com (mrgmx104 [212.227.17.168]) with ESMTPSA (Nemesis) id 1MBUqF-1koelp3x5b-00D11D; Sat, 09 Jan 2021 19:04:59 +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 v7 2/7] dt-bindings: mfd: Add binding for Netronix embedded controller Date: Sat, 9 Jan 2021 19:02:15 +0100 Message-Id: <20210109180220.121511-3-j.neuschaefer@gmx.net> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210109180220.121511-1-j.neuschaefer@gmx.net> References: <20210109180220.121511-1-j.neuschaefer@gmx.net> MIME-Version: 1.0 X-Provags-ID: V03:K1:G9JfvNlKTk6g31LtLz23K/QbaXjnACKNG57wlNXxZJcGdvifzlJ 9B7JnFm07xp4tbAlHf+86BdbwRZru7H/rFKD2fK92HuSPqfY/5Xasr6VN8gBDYOp7DR1oVS fJqzU70IewJ/cetjwUL27J8iQ+TlC5fSCfH3zAgmiFd9uGPfMjAma3gQeH40xyPP0pzNu5r PoiweiIS4BLRloJ5MSXig== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:Hi4E1BbiO4w=:HSn9KO0QfjCaC9NC7W3Utm rd1dkilQzxfjGgc77QKJqRodVT0E4iSkAtWNaF5mlhOThUxmnSuyGabFXayJJK0GjDZVEUuI3 8pBfa5uqvqxTUPdywMrfvJOqAklcFgy64gqBqNMOptIlAoRM0b/pPK8+RcEOEEYP4dM8dLr/b eAhGnCu94ITGCm03unwjGnOLZhPiM0r3FC3F8VUmfpVXMO055eFchRM3pN8o1rc5gOQDfQOhE 5OA1Vx4PgrOihAGUowGEg6rJDD8jZleyIcWxDXkwN8QA69y/hOUQC+lipf3Jxz8nBbFkn3J1u 65Z2SJ003u+3rZI9jrQqNG7Hd1/iJEGrUFp+3B8PXgn2Fbb+7foSU/SPDLNfduU2yz2wbtadn 5Ib7+eAeP3BlBR0A+tUiD+Hec2v7wAU11BWt5pMeHZatvoKoU9wt9MDTxUjRfNGgfEJBzK9BC Qz31lD9rZQwIPwqGnXrJAyxLLLtSDLDXR3W1mXboJZpdvEGyoSwTdwyoFaV74E88VaoTfZHWl nrAVuc6OV8X3CImydm59F20aWHNfsSfCIyk91XpqTdnl7o7W5y3iNuw0cmlkTyLdo9JOFgxCC 8xc7QrTQ+rQIKQS18/IqAQTmMiHbiP50kaKf3r9mXKAV8+lhm2HY6I1Lm8nLvVL9gR+qkiIEj u8AoaAmxy2PFOLuUq0sf+b88GEfcdFd4TC0XbD5XUCf3ZEMLLf5/k4Xt4LGX9KnIeIyGF4WkC TdGnzAoO2A6DltVseGAlVEM+HZx7Wo4hrpOjp1BWrdUkWHe+5TasHP6nfpDSSjZgBUodXrJ64 lCQaiS6O0vU5i79lAB8oeo61r5fxcX5E0RP0wgVTt/32IfzYSuaij8rCjVs+XMhQGhs9JRQdN NipLOayWL/q0y+h/XTtA== Precedence: bulk List-ID: X-Mailing-List: linux-pwm@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-v7: - 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"; + };