From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Murphy Subject: Re: [PATCH 2/2] dt-bindings: leds: document new "power-supply" property Date: Fri, 12 Jul 2019 13:38:10 -0500 Message-ID: References: <20190708103547.23528-1-jjhiblot@ti.com> <20190708103547.23528-3-jjhiblot@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20190708103547.23528-3-jjhiblot@ti.com> Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org To: Jean-Jacques Hiblot , jacek.anaszewski@gmail.com, pavel@ucw.cz, robh+dt@kernel.org, mark.rutland@arm.com, daniel.thompson@linaro.org Cc: linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org List-Id: linux-leds@vger.kernel.org JJ On 7/8/19 5:35 AM, Jean-Jacques Hiblot wrote: > Most of the LEDs are powered by a voltage/current regulator. describing in > the device-tree makes it possible for the LED core to enable/disable it > when needed. This should be patch 1. > Signed-off-by: Jean-Jacques Hiblot > --- > Documentation/devicetree/bindings/leds/common.txt | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt > index 70876ac11367..e093a2b7eb90 100644 > --- a/Documentation/devicetree/bindings/leds/common.txt > +++ b/Documentation/devicetree/bindings/leds/common.txt > @@ -61,6 +61,11 @@ Optional properties for child nodes: > - panic-indicator : This property specifies that the LED should be used, > if at all possible, as a panic indicator. > > +- power-supply : A voltage/current regulator used to to power the LED. When a > + LED is turned off, the LED core disable its regulator. The > + same regulator can power many LED (or other) devices. It is > + turned off only when all of its users disabled it. > + > - trigger-sources : List of devices which should be used as a source triggering > this LED activity. Some LEDs can be related to a specific > device and should somehow indicate its state. E.g. USB 2.0 Do you have an example update? Dan 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=-8.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 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 DC38BC742D2 for ; Fri, 12 Jul 2019 18:39:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B537220645 for ; Fri, 12 Jul 2019 18:39:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="IvWP7LKW" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727417AbfGLSjI (ORCPT ); Fri, 12 Jul 2019 14:39:08 -0400 Received: from fllv0016.ext.ti.com ([198.47.19.142]:36850 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726811AbfGLSjI (ORCPT ); Fri, 12 Jul 2019 14:39:08 -0400 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id x6CIcwZq015255; Fri, 12 Jul 2019 13:38:58 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1562956738; bh=qoKT170R6U+xejiy045waJJnY7mObDoDXmCpVbDWlxU=; h=Subject:To:CC:References:From:Date:In-Reply-To; b=IvWP7LKWUo/msn1Nf+yf/zMbneTgvg+6CLwE1sCOQdGFJtWl5L7kgspohdLbyA/RF T2Ul1BJC3Z67GZax/DwW2PogmdN/9zAin0U5vFtfsnSypj4kHS9y6AVA6VdY8DMjlK nUscF5Nw3fGj6IItwkAW85rmT6dzmCEzXMN6+6lk= Received: from DFLE100.ent.ti.com (dfle100.ent.ti.com [10.64.6.21]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x6CIcwFb052967 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 12 Jul 2019 13:38:58 -0500 Received: from DFLE103.ent.ti.com (10.64.6.24) by DFLE100.ent.ti.com (10.64.6.21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Fri, 12 Jul 2019 13:38:57 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) by DFLE103.ent.ti.com (10.64.6.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5 via Frontend Transport; Fri, 12 Jul 2019 13:38:57 -0500 Received: from [128.247.59.136] (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id x6CIcvj9030014; Fri, 12 Jul 2019 13:38:57 -0500 Subject: Re: [PATCH 2/2] dt-bindings: leds: document new "power-supply" property To: Jean-Jacques Hiblot , , , , , CC: , , References: <20190708103547.23528-1-jjhiblot@ti.com> <20190708103547.23528-3-jjhiblot@ti.com> From: Dan Murphy Message-ID: Date: Fri, 12 Jul 2019 13:38:10 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 MIME-Version: 1.0 In-Reply-To: <20190708103547.23528-3-jjhiblot@ti.com> Content-Type: text/plain; charset="UTF-8"; format="flowed" Content-Transfer-Encoding: 7bit Content-Language: en-US X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-leds-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org Message-ID: <20190712183810.iWiblvRb4cRIEKJSGB7P07miO-z-KffHqYYZouwwY6I@z> JJ On 7/8/19 5:35 AM, Jean-Jacques Hiblot wrote: > Most of the LEDs are powered by a voltage/current regulator. describing in > the device-tree makes it possible for the LED core to enable/disable it > when needed. This should be patch 1. > Signed-off-by: Jean-Jacques Hiblot > --- > Documentation/devicetree/bindings/leds/common.txt | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt > index 70876ac11367..e093a2b7eb90 100644 > --- a/Documentation/devicetree/bindings/leds/common.txt > +++ b/Documentation/devicetree/bindings/leds/common.txt > @@ -61,6 +61,11 @@ Optional properties for child nodes: > - panic-indicator : This property specifies that the LED should be used, > if at all possible, as a panic indicator. > > +- power-supply : A voltage/current regulator used to to power the LED. When a > + LED is turned off, the LED core disable its regulator. The > + same regulator can power many LED (or other) devices. It is > + turned off only when all of its users disabled it. > + > - trigger-sources : List of devices which should be used as a source triggering > this LED activity. Some LEDs can be related to a specific > device and should somehow indicate its state. E.g. USB 2.0 Do you have an example update? Dan