From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 771B0C282DB for ; Thu, 31 Jan 2019 08:25:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5F7AC20881 for ; Thu, 31 Jan 2019 08:25:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731695AbfAaIZg (ORCPT ); Thu, 31 Jan 2019 03:25:36 -0500 Received: from olimex.com ([184.105.72.32]:51507 "EHLO olimex.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725961AbfAaIZf (ORCPT ); Thu, 31 Jan 2019 03:25:35 -0500 Received: from localhost.localdomain ([195.238.85.143]) by olimex.com with ESMTPSA (ECDHE-RSA-AES128-GCM-SHA256:TLSv1.2:Kx=ECDH:Au=RSA:Enc=AESGCM(128):Mac=AEAD) (SMTP-AUTH username stefan@olimex.com, mechanism PLAIN) for ; Thu, 31 Jan 2019 00:25:29 -0800 From: Stefan Mavrodiev To: Jacek Anaszewski , Pavel Machek , Rob Herring , Mark Rutland , Chen-Yu Tsai , linux-leds@vger.kernel.org (open list:LED SUBSYSTEM), devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS), linux-kernel@vger.kernel.org (open list:X-POWERS MULTIFUNCTION PMIC DEVICE DRIVERS) Cc: Stefan Mavrodiev Subject: [PATCH 3/5] dt-bindings: leds: Add binding for axp20x-led device driver Date: Thu, 31 Jan 2019 10:23:05 +0200 Message-Id: <20190131082308.22522-3-stefan@olimex.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190131082308.22522-1-stefan@olimex.com> References: <20190131082308.22522-1-stefan@olimex.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This adds the devicetree bindings for charge led indicator found on most of X-Powers AXP20X PMICs. Signed-off-by: Stefan Mavrodiev --- .../devicetree/bindings/leds/leds-axp20x.txt | 74 +++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/leds-axp20x.txt diff --git a/Documentation/devicetree/bindings/leds/leds-axp20x.txt b/Documentation/devicetree/bindings/leds/leds-axp20x.txt new file mode 100644 index 000000000000..73fae22ffe29 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/leds-axp20x.txt @@ -0,0 +1,74 @@ +Device Tree Bindings for LED support on X-Powers PMIC + +Most of the X-Powers PMICs have integrated battery charger with LED indicator. +The output is open-drain, so the state is either high-Z or output-low. The +driver is subnode of AXP20X MFD driver, since it uses shared bus with all +other cells. +The LED can be controlled either manually or automatic. Then in automatic +(controlled by the charger) there are two indication modes: + +Mode-A +====== +- output-low: Charging +- high-Z Not charging +- 1Hz flashing: Abnormal alarm +- 4Hz flashing Overvoltage alarm + +Mode-B +====== +- output-low: Battery full +- high-Z Not charging +- 1Hz flashing: Charging +- 4Hz flashing Overvoltage or abnormal alarm + +The control and the mode can be changed from sysfs. + +For AXP20X MFD bindings see: +Documentation/devicetree/bindings/mfd/axp20x.txt + +Required properties: +- compatible : Must be "x-powers,axp20x-led" + +Supported common leds properties, see ./common.txt for more information: +- label : sets LED label. If omitted, dt device node is used +- linux,default-trigger : See +- default-state: + +Optional properties: +- x-powers,charger-mode: 0 for Mode-A, 1 for Mode-B + If omitted, then the control is set to manual mode. + On invalid value, Mode-A is used. + + +Example: + + axp803: pmic@3a3 { + compatible = "x-powers,axp803"; + + ... + + axp20x-led { + compatible = "x-powers,axp20x-led"; + status = "okay"; + + label = "axp20x:yellow:chgled"; + linux,default-trigger = "timer"; + default-state = "on"; + }; + }; + +or + + axp803: pmic@3a3 { + compatible = "x-powers,axp803"; + + ... + + axp20x-led { + compatible = "x-powers,axp20x-led"; + status = "okay"; + + label = "axp20x:yellow:chgled"; + x-powers,charger-mode = "mode-b"; + }; + }; -- 2.17.1