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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS 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 D3936C46464 for ; Wed, 15 Aug 2018 01:26:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 836272156E for ; Wed, 15 Aug 2018 01:26:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Fsl0vECJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 836272156E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726007AbeHOEQS (ORCPT ); Wed, 15 Aug 2018 00:16:18 -0400 Received: from mail-pl0-f41.google.com ([209.85.160.41]:41811 "EHLO mail-pl0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725847AbeHOEQS (ORCPT ); Wed, 15 Aug 2018 00:16:18 -0400 Received: by mail-pl0-f41.google.com with SMTP id w19-v6so9034128ply.8; Tue, 14 Aug 2018 18:26:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=lyHln1WSabMGKtM/2j7P69npMr4pIQNBcgsTMSlFhHw=; b=Fsl0vECJGrudZg7GTW5MxOuCuVi4VgSV2v/EqYq7aGP23uS3TXPipdcLM/p3osd0gV 7S7wXWb/SIr3UN0jYBBuiYlef3vNyVXnbZ55svET9zrD/JSxZNLKsjAVjTzdfSddXfY1 GAQjKsMAOtTNNWtUQEzyupTAvdfvufWPZEk9K7qF/oWyJJMek+QnS2qKUeqDNeifX/dL Dp38VB6MYtvXoXRBHoM9NcpcHI0NYQuTJObucs32ba7jXFSSSsVSnKzKx0gL2WPZJsr1 Zbzo5aGLQGVW9pJ9UpSfnptMdfgAFG7nARPwIbwvAxxr1Owmo1VTSWTYkpwvJGrxbJAU gNbA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=lyHln1WSabMGKtM/2j7P69npMr4pIQNBcgsTMSlFhHw=; b=ixmoAwEsUFofQEnq/xHPvPvAuhmNMGVVLfnnrmgLI7hXkDBw42sijZ3ST5Yyv37dx5 gckIWNwULOGYWzf/DNkIqJWddhlja9H8sPITnivkmJtBviUe8pDg2/bEClHb9xslRtQR j46yoi3JMb5touWv6fcQvDy99Gxj5RRQdwaFSnWFd36EPB2oM6cljvIFQ0bw9+1GC0I6 sQuiIyoFavUTDIhElpaxNMsSOJk44WPYTNmIbOGxG3tNPrKBvR2cukt5Qvyhu25NcLTW yhSbnJYujgU1Re2JSySTo8H9LEO2+K3kXCb83ICFSXJ6FTVQ7sEMTtt9dO/QjBNWCyun HDpw== X-Gm-Message-State: AOUpUlFdPD5HUQdFlkfUgPWjaxqB0ZSzQnUO4VpFOcX7EbT4oOoF4p0t FTf8ppi5bhc4c2in9QEyyzA= X-Google-Smtp-Source: AA+uWPxjPpjWmJDuT2J1qJHEKz2q8jGFpS/KetKLqSVSgKl0UP14miFlevWDS7z2wc47ROl2t+UpXA== X-Received: by 2002:a17:902:18a:: with SMTP id b10-v6mr22782039plb.62.1534296386950; Tue, 14 Aug 2018 18:26:26 -0700 (PDT) Received: from [192.168.1.70] (c-24-6-192-50.hsd1.ca.comcast.net. [24.6.192.50]) by smtp.gmail.com with ESMTPSA id z5-v6sm46824019pfi.4.2018.08.14.18.26.25 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 14 Aug 2018 18:26:26 -0700 (PDT) Subject: Re: How delete node or property in overlayd dts? To: =?UTF-8?B?5byg5rOi?= , robh+dt@kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: From: Frank Rowand Message-ID: Date: Tue, 14 Aug 2018 18:26:25 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/14/18 07:46, 张波 wrote: > /delete-node/ /delete-prop/ could be used in dtsi files without device > tree overlay. > > but with device tree overlay, /delete-node/ and /delete-prop/ are not work. > How to delete property and node in overlay dts? > > for example, > in basel.dts have following node > node1 { > property1; > property3; > node2 { > property2; > } > } > > in overlay.dts as following > node1 { > /delete-property/ property1; > /delete-node/ node2; > } > > after overlay, property1 and node2 is not deleted. > The /delete-node/ and /delete-prop/ directives are only used by the dtc compiler within a single compilation. There is nothing in the format of a devicetree blob to represent the notion of deleting a property or a node. You can not delete a property or a node in an overlay dtb.