From patchwork Tue Sep 12 13:44:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Linus Walleij X-Patchwork-Id: 138452 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:9ecd:0:b0:3f2:4152:657d with SMTP id t13csp698444vqx; Tue, 12 Sep 2023 14:48:46 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHAMxERsEdAhGXTxrOc2EXNwrjG/991qmlLGchvLDqjbi/VP3zL8pMm/wJIsyXdCP4KaFEG X-Received: by 2002:a05:6a00:1d1a:b0:68b:fc76:7dea with SMTP id a26-20020a056a001d1a00b0068bfc767deamr4992760pfx.12.1694555326579; Tue, 12 Sep 2023 14:48:46 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1694555326; cv=none; d=google.com; s=arc-20160816; b=M/cslCsZHDyv5P840YBAljDGQlHM+ZWLoTYBUgntEAQfWteGvIVvT07HxmYxn+Tml2 L0Cjpm06zn3DtcYorGQK+H2BQ2LjYsTrkQiadaoj8q4iKXYKIpqMbO2bIxylVjHOdJUt yKrWx/4RZoMBBAQu04HwWToCIDUnKOm0/5v3oPr/oFd7SDO8udzyiGmSjfh+3b4yDKX5 /jb/rJwlumF7/ggpVhFuiggxCawNR70dO2EN860V8O9EoZrmrlaTqhmN9Kal8NTtl7Q+ 0bSljfg5987xRdMHiZCj1WhNvIUwg0Myeoxx0nACCxSrFaI1uackqXM8junur756ibos VFOA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:cc:to:in-reply-to:references:message-id :content-transfer-encoding:mime-version:subject:date:from :dkim-signature; bh=zr1tndUa8GJ+rpTLKAA728oy8bkiMEVH1LyXXvtzocQ=; fh=vOR+f+ec2RFJcjj3G0dAoFd095oyBG31moK1iVhdblk=; b=VDRI7aYrpOMMieCIR/1RckAfBgw//8uK5cGguioiBvi7DsNK+RmtBozuqNoizqnxGc wdkquIO57r8MTV4e4n00zNOvBsf4v6heMc/n0zH0FElDcIn/9WCyR7F1UWiIgmb8UEWC g9t0m9OgqIl46fnBjuFx1EQfQn2o4nvGPdCzl95eZsx9gAWNZmHdOf0EalHT2c6i5c7x jJpQ8UVzjoWzvTp+NTt7ASFPHqHQFTGxaFeTAk1j3tzKv+POPYZcQb7nGv4DLpVfduec fqto1hGOQ4VmOnMn50rqos68oHmoT6QHngJ5P+PlHf2+gg0XiW5scpBj8HNCMbftDkXX k0EA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=ljM6uTY8; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from snail.vger.email (snail.vger.email. [23.128.96.37]) by mx.google.com with ESMTPS id ct5-20020a056a000f8500b0068a692b67b0si8753004pfb.104.2023.09.12.14.48.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Sep 2023 14:48:46 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) client-ip=23.128.96.37; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=ljM6uTY8; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by snail.vger.email (Postfix) with ESMTP id E93DE81CC851; Tue, 12 Sep 2023 06:45:01 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.8 at snail.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235678AbjILNor (ORCPT + 37 others); Tue, 12 Sep 2023 09:44:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44522 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235656AbjILNoi (ORCPT ); Tue, 12 Sep 2023 09:44:38 -0400 Received: from mail-lf1-x12d.google.com (mail-lf1-x12d.google.com [IPv6:2a00:1450:4864:20::12d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2F08E10D9 for ; Tue, 12 Sep 2023 06:44:34 -0700 (PDT) Received: by mail-lf1-x12d.google.com with SMTP id 2adb3069b0e04-502a25ab777so6352543e87.2 for ; Tue, 12 Sep 2023 06:44:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1694526272; x=1695131072; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=zr1tndUa8GJ+rpTLKAA728oy8bkiMEVH1LyXXvtzocQ=; b=ljM6uTY8TLHrVWuTsqAw98/sjye7NvFIIU3xXeOnql3N4k1SPvpvXiwUf8SON2sqnz ITjEEDogB8bX2WuCiSdq0dKuwwLHq8S07PeW4xPVAYg1XoFCH96oN4ikRQDSvpR+epoe SmgcaxYsEPLlL63QynjdtpmnUwOeMz66roO3HYiFupf7iBO1IRejrDuUWVXc0oWhVVbC FtBgrUiWVOl1ZDetmCXhCNNZzpvaYDvuLG+rBRnKV16KlCPkiNVdI4X0nL7WnPwjYNlB qXSKYM7y1HAsRSYN9P1fkBU3f72cPZyl9RtPFw5akLjhapJQlE8pBEYi32lyFSH1utji HdCA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1694526272; x=1695131072; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=zr1tndUa8GJ+rpTLKAA728oy8bkiMEVH1LyXXvtzocQ=; b=Yoo9bSePcEWkx72y5Td8PrgvyrI9hUZjotWyq/Lb/RZDUZasyG37pPbiL3ALCfI2kz foIZVTjI2IrSVoDsoa/v6DBQpKAPbN6mvPfgIan2BRtlHLkUPhxdRH6nhukKMlYNHQGp Z51V2EuiiClAHQbmfZLyjF2/UGK7S7zZsclj6Daqwnc7Dc4UcTO/xClIHl88sNmXSC4d XHnPm5OdhCh9AQ6W15lu+GtI+1aD9fImfm2xqA2y+6zQhF0/pPmnyV1Bda+iOM6IKtnH 04Nok/0QibXoSPjTIj0l60gLD3OkvsuCBr7Jp6so3s9up0mH+VNf7Oggostc0x5tlvq5 58Qw== X-Gm-Message-State: AOJu0YzlWSXa1WyDfW/lhew8Bqz5c/RDnK6zWGIYT9FeIgwG455BbfS/ aZrleoE5r1wc8tzzluzpWPAuiQ== X-Received: by 2002:a05:6512:3082:b0:501:be3d:8a46 with SMTP id z2-20020a056512308200b00501be3d8a46mr12680112lfd.26.1694526272217; Tue, 12 Sep 2023 06:44:32 -0700 (PDT) Received: from [127.0.1.1] ([85.235.12.238]) by smtp.gmail.com with ESMTPSA id y6-20020ac255a6000000b00500a2091e30sm1755020lfg.115.2023.09.12.06.44.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Sep 2023 06:44:31 -0700 (PDT) From: Linus Walleij Date: Tue, 12 Sep 2023 15:44:30 +0200 Subject: [PATCH 1/2] dt-bindings: leds: Mention GPIO triggers MIME-Version: 1.0 Message-Id: <20230912-gpio-led-trigger-dt-v1-1-1b50e3756dda@linaro.org> References: <20230912-gpio-led-trigger-dt-v1-0-1b50e3756dda@linaro.org> In-Reply-To: <20230912-gpio-led-trigger-dt-v1-0-1b50e3756dda@linaro.org> To: =?utf-8?q?Jan_Kundr=C3=A1t?= , Pavel Machek , Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jacek Anaszewski Cc: linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Linus Walleij X-Mailer: b4 0.12.3 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Tue, 12 Sep 2023 06:45:02 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1776853064778686805 X-GMAIL-MSGID: 1776870046448239865 We reuse the trigger-sources phandle to just point to GPIOs we may want to use as LED triggers. Example: gpio: gpio@0 { compatible "my-gpio"; gpio-controller; #gpio-cells = <2>; interrupt-controller; #interrupt-cells = <2>; #trigger-source-cells = <2>; }; leds { compatible = "gpio-leds"; led-my-gpio { label = "device:blue:myled"; gpios = <&gpio 0 GPIO_ACTIVE_HIGH>; default-state = "off"; linux,default-trigger = "gpio"; trigger-sources = <&gpio 1 GPIO_ACTIVE_HIGH>; }; }; Signed-off-by: Linus Walleij --- Documentation/devicetree/bindings/leds/common.yaml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/leds/common.yaml b/Documentation/devicetree/bindings/leds/common.yaml index 5fb7007f3618..b42950643b9d 100644 --- a/Documentation/devicetree/bindings/leds/common.yaml +++ b/Documentation/devicetree/bindings/leds/common.yaml @@ -191,6 +191,8 @@ properties: each of them having its own LED assigned (assuming they are not hardwired). In such cases this property should contain phandle(s) of related source device(s). + Another example is a GPIO line that will be monitored and mirror the + state of the line (with or without inversion flags) to the LED. In many cases LED can be related to more than one device (e.g. one USB LED vs. multiple USB ports). Each source should be represented by a node in the device tree and be referenced by a phandle and a set of phandle