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,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED 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 788F0C43441 for ; Tue, 27 Nov 2018 18:05:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 468312086B for ; Tue, 27 Nov 2018 18:05:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=linaro.org header.i=@linaro.org header.b="OMuogJ79" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 468312086B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org 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 S1732197AbeK1FEZ (ORCPT ); Wed, 28 Nov 2018 00:04:25 -0500 Received: from mail-wm1-f68.google.com ([209.85.128.68]:40142 "EHLO mail-wm1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725872AbeK1FEY (ORCPT ); Wed, 28 Nov 2018 00:04:24 -0500 Received: by mail-wm1-f68.google.com with SMTP id q26so23127262wmf.5 for ; Tue, 27 Nov 2018 10:05:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=subject:from:to:cc:references:message-id:date:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=eQ8kTXqiEAagVlAp1jMqhXS2NrO5ERaK3acUtEGGsWM=; b=OMuogJ79mbCg599v7De1cTgpP0ktkweA0bbAGgPpGs8/GruHiJu+lO6nbxR908iHfn zFYe8U3spLtn/scWmsh3bKSgqsf+bkKq50nAIgi9b24F7hXKXxGhMf/LF9JExUKKdGOx 7ij5VVZpSTHM/YxgpQ2XxOXrzK7IvB1mFp+ug= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:from:to:cc:references:message-id:date :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=eQ8kTXqiEAagVlAp1jMqhXS2NrO5ERaK3acUtEGGsWM=; b=Bi5jnlEUBw/IC3RO93DERQYIkweFhLObZEywWIT3XTZ439dT+xkCzFOC0zjJXq2CVN SyMBkk9R+IxKxi62l2ME6Y4Yk74VFJXD+axOe6z24TuC1xHA+5r2BMIZnXKiAI6xEYEo wUuhZacL7r7uggDkWZ6ftTwHBR08PZGQ3O3lPjypvI9nL58Q1LZD1q9NXVTi04CpuseT c/jDqaqtNG6EFez5DlEtT1+fZG+c4LUFV38Wn3czorcAw0N2OizoknV5/ZhgulPGdchi VSTpaDk1H5UQpM2BKDloy9RKDZc+QEM1OZyihKUlHaNRUcTp8hsNlwOV/+GYFglIMf+w GXMg== X-Gm-Message-State: AA+aEWb/BNq/d/0/vh5srfZG4VedLsDllQOe9zvYVembvR4pbmwijKBs cJwlGdFy7irLPMyia5L+Vo90TQ== X-Google-Smtp-Source: AFSGD/Wfns9xl52m4apvfGorWaHkXBkFJCo7oX70SMuN/8wOlmGgre7AZSoAN6Zs8x4gVda+1tkO4Q== X-Received: by 2002:a1c:174f:: with SMTP id 76mr1406294wmx.116.1543341941110; Tue, 27 Nov 2018 10:05:41 -0800 (PST) Received: from [10.44.66.8] ([212.45.67.2]) by smtp.googlemail.com with ESMTPSA id 14sm8291119wmv.36.2018.11.27.10.05.38 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 27 Nov 2018 10:05:40 -0800 (PST) Subject: Re: [PATCH v9 2/8] dt-bindings: Introduce interconnect binding From: Georgi Djakov To: Rob Herring Cc: linux-pm@vger.kernel.org, gregkh@linuxfoundation.org, rjw@rjwysocki.net, mturquette@baylibre.com, khilman@baylibre.com, vincent.guittot@linaro.org, skannan@codeaurora.org, bjorn.andersson@linaro.org, amit.kucheria@linaro.org, seansw@qti.qualcomm.com, daidavid1@codeaurora.org, evgreen@chromium.org, mark.rutland@arm.com, lorenzo.pieralisi@arm.com, abailon@baylibre.com, maxime.ripard@bootlin.com, arnd@arndb.de, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, Thierry Reding , Krishna Sitaraman References: <20180831140151.13972-1-georgi.djakov@linaro.org> <20180831140151.13972-3-georgi.djakov@linaro.org> <20180925180215.GA12435@bogus> Message-ID: Date: Tue, 27 Nov 2018 20:05:39 +0200 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed 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 Hi Rob, On 9/26/18 17:42, Georgi Djakov wrote: > Hi Rob, > > Thanks for the comments! > > On 09/25/2018 09:02 PM, Rob Herring wrote: >> On Fri, Aug 31, 2018 at 05:01:45PM +0300, Georgi Djakov wrote: >>> This binding is intended to represent the relations between the interconnect >>> controllers (providers) and consumer device nodes. It will allow creating links >>> between consumers and interconnect paths (exposed by interconnect providers). >> >> As I mentioned in person, I want to see other SoC families using this >> before accepting. They don't have to be ready for upstream, but WIP >> patches or even just a "yes, this works for us and we're going to use >> this binding on X". Patches for the iMX7ULP platform are already available [1]. Thanks Alexandre Bailon! The interconnect API seems to be also a good fit for Nvidia SoCs. There is an ongoing discussion about implementing an interconnect provider driver for Tegra [2]. Thanks Thierry and Krishna! In addition of the above, i also checked privately with a few other SoC maintainers and made them aware of these patches. Some are not ready for upstream yet, but the feedback was positive and i expect more SoCs to make use of this in the future. BR, Georgi [1] https://lkml.org/lkml/2018/11/17/368 [2] https://marc.info/?t=154056181900001&r=1&w=2 > Other than the 3 Qualcomm SoCs (msm8916, msm8996, sdm845) that are > currently using this binding, there is ongoing work from at least two > other vendors that would be using this same binding. I will check on > what is their progress so far. > >> Also, I think the QCom GPU use of this should be fully sorted out. Or >> more generically how this fits into OPP binding which seems to be never >> ending extended... > > I see this as a further step. It could be OPP binding which include > bandwidth values or some separate DT property. Jordan has already > proposed something, do you have any initial comments on that? > > BR, > Georgi >