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=-2.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 8F272C3A59E for ; Wed, 21 Aug 2019 15:36:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 60CAD2339F for ; Wed, 21 Aug 2019 15:36:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="e9XRegtx" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730062AbfHUPgm (ORCPT ); Wed, 21 Aug 2019 11:36:42 -0400 Received: from mail-pl1-f194.google.com ([209.85.214.194]:35565 "EHLO mail-pl1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730002AbfHUPgk (ORCPT ); Wed, 21 Aug 2019 11:36:40 -0400 Received: by mail-pl1-f194.google.com with SMTP id gn20so1530127plb.2; Wed, 21 Aug 2019 08:36:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=bU5dLSJ35u6Bc3f/Z8UK4KjZIowhKbGPaLIlOlO9BhQ=; b=e9XRegtx2T5/e+EyraTykJJsAX5TrMpT3p/QgxCT00RPnE4ToK70gJoh1Y0WFJWSLY zDoLyDdoWRh/QzLOGtgOgQtJcb7LD6M9ftcJ9GQNghZVgg1imiXyBlU+LtdZVry/w/lV 4D0T7cCQiWsAolm3jmhpB6gNjToS7C/jzSSdQ6FsDO+P+oJLptCF4E/2oNt577BEiNvr 5WZMUJnroUCxcJXbSE1+OrxidBI62E4USySFN4vCy58DtlMTYs359/raXKXTRDm1/gZN T7TPsvPcO6UxVhyjp7I+Fy4cQA4zapyu3Si0Kz1PDEtBPTOHwhRRb6brgDYm1MuOlwbX kM7A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=bU5dLSJ35u6Bc3f/Z8UK4KjZIowhKbGPaLIlOlO9BhQ=; b=YJqC4Ajxp8bcHh59FAvNI/TbnG9WRiwlnCZDMMcLc/4nsXZ+zk8HT4E6TbIK+zhW+Q tsXgDeam+WwxjeALlsfnaJpSU+krYniANg5qlf/fK9H8P0c3dTdexosRM66PizAqGNiw LNYoL7DonVwVOXHTym4p1F4zHMp74aDfZrL1oSu4t92ERRflh792faHjQFMQUPiuCSC0 hyxxnqrL4VPvkvzf8Y7fWmKIl7773LAErPjIiZjiRShyCKlOc/+JeUS5iHEjDxb8EEt+ mvXr0BC94Oryu2YjjGEDMV2dPB7bholH283QGrIXx4Q2lcsHWnx6XJrx+OSYGK0rebJa hUcQ== X-Gm-Message-State: APjAAAUE5w+8+2eQXxaoKmZTbIKIBV+oEVBTmgsDV+os8Zh9JWdgI6zg o4SH3eEtyoActH0LCvkRob2vOqkT X-Google-Smtp-Source: APXvYqznq9ryDWqFwBT1mchJS5I30ZywXEQEi/az8vBCk4OtbrFfSOQOZVxLTuzTa+oAN5fc3zjogg== X-Received: by 2002:a17:902:834c:: with SMTP id z12mr20462410pln.8.1566401799789; Wed, 21 Aug 2019 08:36:39 -0700 (PDT) Received: from [192.168.43.210] (mobile-166-137-176-042.mycingular.net. [166.137.176.42]) by smtp.gmail.com with ESMTPSA id t9sm29730588pgj.89.2019.08.21.08.36.38 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 21 Aug 2019 08:36:39 -0700 (PDT) Subject: Re: [PATCH v7 1/7] driver core: Add support for linking devices during device addition To: Saravana Kannan Cc: Rob Herring , Mark Rutland , Greg Kroah-Hartman , "Rafael J. Wysocki" , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , LKML , David Collins , Android Kernel Team References: <20190724001100.133423-1-saravanak@google.com> <20190724001100.133423-2-saravanak@google.com> <32a8abd2-b6a4-67df-eee9-0f006310e81e@gmail.com> <522e8375-5070-f579-6509-3e44fe66768e@gmail.com> From: Frank Rowand Message-ID: <915b49b5-5511-afa2-d3d6-e4ede94d40be@gmail.com> Date: Wed, 21 Aug 2019 08:36:37 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 8/20/19 3:10 PM, Saravana Kannan wrote: > On Mon, Aug 19, 2019 at 9:25 PM Frank Rowand wrote: >> >> On 8/19/19 5:00 PM, Saravana Kannan wrote: >>> On Sun, Aug 18, 2019 at 8:38 PM Frank Rowand wrote: >>>> < snip > >>> >>> 3. The supplier info doesn't always need to come from a firmware. So I >>> don't want to limit it to that? >> >> If you can find another source of topology info, then I would expect >> that another set of fwnode_operations functions would be created >> for the info source. > > The other source could just be C files in the kernel. Using fwnodes > for that would be hacky. But let's sort (1) and (2) out first. > < snip > Just a piece of trivia. I got curious enough about this to search. There is a third type of fwnode, software nodes. See commit 59abd83672f70cac4b6bf9b237506c5bc6837606 for a description. -Frank