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_INVALID,DKIM_SIGNED, 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 7E398C76186 for ; Wed, 24 Jul 2019 20:42:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 52BFB21841 for ; Wed, 24 Jul 2019 20:42:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="P2IEkSSl"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="GlwlEVE9" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727878AbfGXUmX (ORCPT ); Wed, 24 Jul 2019 16:42:23 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:56034 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726314AbfGXUmX (ORCPT ); Wed, 24 Jul 2019 16:42:23 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 01D6F60314; Wed, 24 Jul 2019 20:42:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1564000942; bh=yE4b8DVH6UNu3QtVYOP2/QoCPJazwMi7Z4vS46emglg=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=P2IEkSSlKMVUy3LeWMufAbJitm5TNC0i6tCCpJnHtpgadAoJmo9sMWoJrDPVkYx1f eQwki+EuAigzGH5WM/pauyFu0Ri57e9XQ6yEGtHs/X0fcBuPQePirqJ6XgWl9vTVFO cgkvLkHcRfprCuq+l0ht8IzBTUHUAvBM1HlcKasM= Received: from [10.46.162.237] (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: daidavid1@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 4203360256; Wed, 24 Jul 2019 20:42:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1564000940; bh=yE4b8DVH6UNu3QtVYOP2/QoCPJazwMi7Z4vS46emglg=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=GlwlEVE9LNssety46OVjURuumaCj9inIy8RTbpcCJmeyX7SXYxh/sctD1NqIGhqUo 4U1fHOENMOhGaeQqRsy3xv7Gz8O2U3AGH9ucG/W8Im+tLmkdTtLqvBY/gNLj7I8i0o oO3XGSYAzij2M5m2apgGUSlhuYaD5DCz4mOAPMcg= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 4203360256 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=daidavid1@codeaurora.org Subject: Re: [PATCH 1/2] dt-bindings: interconnect: Update Qualcomm SDM845 DT bindings To: Stephen Boyd , bjorn.andersson@linaro.org, georgi.djakov@linaro.org, robh+dt@kernel.org Cc: evgreen@google.com, ilina@codeaurora.org, seansw@qti.qualcomm.com, elder@linaro.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org References: <1563568344-1274-1-git-send-email-daidavid1@codeaurora.org> <1563568344-1274-2-git-send-email-daidavid1@codeaurora.org> <5d371ce7.1c69fb81.9650.8239@mx.google.com> <8c181f08-559b-5d77-a617-65cfd3d5da55@codeaurora.org> <5d3868a9.1c69fb81.876aa.ac30@mx.google.com> <8efd5c48-5d3a-97e1-1dec-6a9cdc4c8ef6@codeaurora.org> <5d38a31d.1c69fb81.80992.0052@mx.google.com> From: David Dai Message-ID: <150445a8-a6be-aa46-026b-1ad254128037@codeaurora.org> Date: Wed, 24 Jul 2019 13:42:19 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <5d38a31d.1c69fb81.80992.0052@mx.google.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org On 7/24/2019 11:27 AM, Stephen Boyd wrote: > Quoting David Dai (2019-07-24 10:22:57) >> The way that I view this is that the consumers consume both bandwidth >> and QoS from these physical NoC devices by getting some path between two >> endpoints on these different NoCs and applying some constraints. The NoC >> providers can accomplish that either by writing to MMIO spaces or by >> talking to some remote processor/hardware to tune its clock speed. The >> consumer doesn't interact with the RSCs directly, but can select a >> different bcm voter based on the endpoints that are associated with a >> particular bcm(apps or disp rsc). Each node(endpoints) will have its own >> BCM designation and an unique bcm voter. > Ok. I get it now. The MMIO nodes will be interconnect providers and > they'll know what RSCs they can use by exposing the same RSC "resource" > multiple times for each RSC that can be targeted? This is what the > postfix is with _DISP on your examples? Presumably there's an _APPS > version of the same prefixed endpoint in case the consumer wants to use > the APPS RSC instead of the DISP one, or maybe there's just no postfix > in this case because APPS is the "default". Right, the suffixes will denote the RSC association and will default to APPS otherwise. -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project