From patchwork Sat Jun 8 04:43:31 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Saravana Kannan X-Patchwork-Id: 10982981 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 89A7D76 for ; Sat, 8 Jun 2019 04:44:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 731C228B70 for ; Sat, 8 Jun 2019 04:44:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 673A928BE0; Sat, 8 Jun 2019 04:44:03 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.5 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, USER_IN_DEF_DKIM_WL autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0838828B70 for ; Sat, 8 Jun 2019 04:44:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726252AbfFHEnu (ORCPT ); Sat, 8 Jun 2019 00:43:50 -0400 Received: from mail-vk1-f202.google.com ([209.85.221.202]:38407 "EHLO mail-vk1-f202.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727520AbfFHEnu (ORCPT ); Sat, 8 Jun 2019 00:43:50 -0400 Received: by mail-vk1-f202.google.com with SMTP id u202so975734vku.5 for ; Fri, 07 Jun 2019 21:43:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=yAz3k7OzPjxwzR5iBZENxEm1ewgrxin9ITMqtF0yTXk=; b=h16Y4HD/UPQ8Qdd8puBUJX6swjYiLioJGWRuDvWtjxgSH5taeUQyhOx79lWt1tEXh9 WP5jLzggF4W2BJI+QMCOkRsdE+R1jjdoA/MyslRnGDBrarPhPv3O8V8nQTinkxBX78O2 1u0gp3xytA+oINw+NizDSVapwgPCn8UIlQOweBTlg/DxloT62xhbeR2/KfYcCT+CR5n5 FoD1m0WGw4gEanoi/kzNuz3zX9MzXvrhLeBaEwvfiV/uRWD+3BXr7MVff/SrZVEp99DR PApeHHYPaL01eGLGrhz5jFMOkLLYRpS4qdRTDJpXZ3wAWpZH4ZBZ7YEA8XQwMnCpnccL 1ZNw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=yAz3k7OzPjxwzR5iBZENxEm1ewgrxin9ITMqtF0yTXk=; b=o4lh1VKS7KErTvz019/HUigkZUM0arL3owcFW4dDgOaO88kTgjG/Z851OdXp/e4YQd MudIs9g8N/aS385En7+Q9YzIctOP2PMM2ODePGPY86edkvDJtWvdvM05YGzWnqOEPfao UmWte4atkVKd0DTxYZilPziVJFwsn6X0MAOLtZen3dcwdyc/MlYWSrfnENURNFVy+Qy/ l2ofzNUEbeRZBuPZBzYQE7DoHt1eGThsb8JFNc0m53pBmUeahQ2dgJPnhNFeaMe5PHZk d1TDVcS7VaLOSGumG98uGRnXiYGaXApIpaox/Slt+sZNVdH8xHgjcpxBYgglJPqg8YMA h6uA== X-Gm-Message-State: APjAAAXGV3CzTwWBppjD88W5HsuSShxyoCKI2m+s2JuWWr5oupX0tMDn I/hsUgIqG8LcYmSD19/wAdmGSr99NIuW8dw= X-Google-Smtp-Source: APXvYqzgoCdbmtERP8lXY/RLG0ooX+4jcXs9QIN2JZHB94tDUDQbpKEPFjga7MoFGI0pHJDoAp7O7S8tT1TDM6M= X-Received: by 2002:a67:1ec1:: with SMTP id e184mr19214210vse.83.1559969029067; Fri, 07 Jun 2019 21:43:49 -0700 (PDT) Date: Fri, 7 Jun 2019 21:43:31 -0700 In-Reply-To: <20190608044339.115026-1-saravanak@google.com> Message-Id: <20190608044339.115026-2-saravanak@google.com> Mime-Version: 1.0 References: <20190608044339.115026-1-saravanak@google.com> X-Mailer: git-send-email 2.22.0.rc2.383.gf4fbbf30c2-goog Subject: [PATCH v1 1/9] dt-bindings: opp: Introduce opp-peak-KBps and opp-avg-KBps bindings From: Saravana Kannan To: Georgi Djakov , Rob Herring , Mark Rutland , Viresh Kumar , Nishanth Menon , Stephen Boyd , "Rafael J. Wysocki" Cc: Saravana Kannan , Rajendra Nayak , Jordan Crouse , vincent.guittot@linaro.org, bjorn.andersson@linaro.org, amit.kucheria@linaro.org, seansw@qti.qualcomm.com, daidavid1@codeaurora.org, evgreen@chromium.org, sibis@codeaurora.org, kernel-team@android.com, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Interconnects often quantify their performance points in terms of bandwidth. So, add opp-peak-KBps (required) and opp-avg-KBps (optional) to allow specifying Bandwidth OPP tables in DT. opp-peak-KBps is a required property that replace opp-hz for Bandwidth OPP tables. opp-avg-KBps is an optional property that can be used in Bandwidth OPP tables. Signed-off-by: Saravana Kannan --- Documentation/devicetree/bindings/opp/opp.txt | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/opp/opp.txt b/Documentation/devicetree/bindings/opp/opp.txt index 76b6c79604a5..c869e87caa2a 100644 --- a/Documentation/devicetree/bindings/opp/opp.txt +++ b/Documentation/devicetree/bindings/opp/opp.txt @@ -83,9 +83,14 @@ properties. Required properties: - opp-hz: Frequency in Hz, expressed as a 64-bit big-endian integer. This is a - required property for all device nodes but devices like power domains. The - power domain nodes must have another (implementation dependent) property which - uniquely identifies the OPP nodes. + required property for all device nodes but for devices like power domains or + bandwidth opp tables. The power domain nodes must have another (implementation + dependent) property which uniquely identifies the OPP nodes. The interconnect + opps are required to have the opp-peak-bw property. + +- opp-peak-KBps: Peak bandwidth in kilobytes per second, expressed as a 32-bit + big-endian integer. This is a required property for all devices that don't + have opp-hz. For example, bandwidth OPP tables for interconnect paths. Optional properties: - opp-microvolt: voltage in micro Volts. @@ -132,6 +137,10 @@ Optional properties: - opp-level: A value representing the performance level of the device, expressed as a 32-bit integer. +- opp-avg-KBps: Average bandwidth in kilobytes per second, expressed as a + 32-bit big-endian integer. This property is only meaningful in OPP tables + where opp-peak-KBps is present. + - clock-latency-ns: Specifies the maximum possible transition latency (in nanoseconds) for switching to this OPP from any other OPP.