From patchwork Mon Aug 19 10:09:57 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Niklas Cassel X-Patchwork-Id: 11100615 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 F2D12912 for ; Mon, 19 Aug 2019 10:10:15 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E362528650 for ; Mon, 19 Aug 2019 10:10:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D745428668; Mon, 19 Aug 2019 10:10:15 +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=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable 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 6536C28650 for ; Mon, 19 Aug 2019 10:10:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726373AbfHSKKN (ORCPT ); Mon, 19 Aug 2019 06:10:13 -0400 Received: from mail-lj1-f196.google.com ([209.85.208.196]:41456 "EHLO mail-lj1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726703AbfHSKKM (ORCPT ); Mon, 19 Aug 2019 06:10:12 -0400 Received: by mail-lj1-f196.google.com with SMTP id m24so1200083ljg.8 for ; Mon, 19 Aug 2019 03:10:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=bFsYBz11w/0+2ipDFc6RAzNYkyX/rGj3LfC3+f/vlp4=; b=beyi9uGJnPpG8O0vT7qQxG//HWz2f6IINF0hBwHiHXB3kM5NEIyK3NG65ahyuzltQn HwoxDU9bsUkPsLT2MHe2pzdSOftUh6tGgYxJ2PUa0Sw7H1uV3stySjV8LZplZKEUFRo1 1Maodh2jZXqnsXwBVOS+g7SjZozY0N2P2ppxGP3+EPBO5n3rpwN1+RvTcGELgeGjE/+c SEYlGvgFZQlQ3cYuGhsm3Qg7gDua8/tTFp179tb3eMFcaWj5mh9KwHU7WogsqXdVypED HPITvLx5YQBBjPJOA37N4CS1M6xlUFJupOFzYyH+79Fvw+WcGFoKXUvrZfAYTlPZMgRY ZtCg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=bFsYBz11w/0+2ipDFc6RAzNYkyX/rGj3LfC3+f/vlp4=; b=JVRw5PhxhauD9mqabYVrDyBI2PfLwAglgMGkt1OhadPx+MSeo3SZbw0yA6r9ZMGcjI qQyZXfV8bJEcljwUo9oQEdl3wEfAGzaQrTeCr8sTIvVpmt78HoHdILhgJ+wcEEy3PmuT +9niuwZW9U4n1OGcu0X139sca67j50OdKnlxVCWxLwwYkiwu2DUrwpJhtiINgcMaiqxT EHoEDko5uPkdZHKUin1nJdQDRGOri45gwIIhO1lxoWStTOVvMpOvdpwWAethEnSzBAzU QJFJep6SoBU6eY0lr1rNT2Auje6ebzuEE+7h4pvbyF7yIvnjlQGOGWEO5gpHMOjB+OMu ue2w== X-Gm-Message-State: APjAAAVYRIN3eE8K9HsMSLXAd1+1oid5poGUOGOF6P33WAivBqhsUPXk +f7BZrZHK6KSRY4+oy5wF7aEMw== X-Google-Smtp-Source: APXvYqyKKUveTAbKAVd1czgb5WboXpJSisP+Hj43L+mlwuCq45a9rieZfHZEJUNuJ3gFablY68RhWA== X-Received: by 2002:a05:651c:29b:: with SMTP id b27mr12017195ljo.74.1566209409256; Mon, 19 Aug 2019 03:10:09 -0700 (PDT) Received: from localhost.localdomain (ua-84-219-138-247.bbcust.telenor.se. [84.219.138.247]) by smtp.gmail.com with ESMTPSA id g9sm1401833lje.90.2019.08.19.03.10.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Aug 2019 03:10:08 -0700 (PDT) From: Niklas Cassel To: Andy Gross , Ilia Lin , Viresh Kumar , Nishanth Menon , Stephen Boyd Cc: linux-arm-msm@vger.kernel.org, jorge.ramirez-ortiz@linaro.org, bjorn.andersson@linaro.org, ulf.hansson@linaro.org, Niklas Cassel , Rob Herring , Rob Herring , Mark Rutland , linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 06/14] dt-bindings: cpufreq: qcom-nvmem: Support pstates provided by a power domain Date: Mon, 19 Aug 2019 12:09:57 +0200 Message-Id: <20190819100957.17095-1-niklas.cassel@linaro.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190725104144.22924-7-niklas.cassel@linaro.org> References: <20190725104144.22924-7-niklas.cassel@linaro.org> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Some Qualcomm SoCs have support for Core Power Reduction (CPR). On these platforms, we need to attach to the power domain provider providing the performance states, so that the leaky device (the CPU) can configure the performance states (which represent different CPU clock frequencies). Signed-off-by: Niklas Cassel Reviewed-by: Rob Herring --- Changes since V2: -Picked up Rob's Reviewed-by on V2. -As Rob pointed out in V1, it should be "In 'cpu' nodes" and not "In 'cpus' nodes". -In Example 2: include the qcom,opp-fuse-level property rather than "...", since Rob pointed out in the review of V1 of "dt-bindings: opp: Add qcom-opp bindings with properties needed for CPR", that this property was missing in this patch. .../bindings/opp/qcom-nvmem-cpufreq.txt | 113 +++++++++++++++++- 1 file changed, 112 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/opp/qcom-nvmem-cpufreq.txt b/Documentation/devicetree/bindings/opp/qcom-nvmem-cpufreq.txt index c5ea8b90e35d..1e6261570f3e 100644 --- a/Documentation/devicetree/bindings/opp/qcom-nvmem-cpufreq.txt +++ b/Documentation/devicetree/bindings/opp/qcom-nvmem-cpufreq.txt @@ -14,7 +14,7 @@ operating-points-v2 table when it is parsed by the OPP framework. Required properties: -------------------- -In 'cpus' nodes: +In 'cpu' nodes: - operating-points-v2: Phandle to the operating-points-v2 table to use. In 'operating-points-v2' table: @@ -23,6 +23,15 @@ In 'operating-points-v2' table: Optional properties: -------------------- +In 'cpu' nodes: +- power-domains: A phandle pointing to the PM domain specifier which provides + the performance states available for active state management. + Please refer to the power-domains bindings + Documentation/devicetree/bindings/power/power_domain.txt + and also examples below. +- power-domain-names: Should be + - 'cpr' for qcs404. + In 'operating-points-v2' table: - nvmem-cells: A phandle pointing to a nvmem-cells node representing the efuse registers that has information about the @@ -682,3 +691,105 @@ soc { }; }; }; + +Example 2: +--------- + + cpus { + #address-cells = <1>; + #size-cells = <0>; + + CPU0: cpu@100 { + device_type = "cpu"; + compatible = "arm,cortex-a53"; + reg = <0x100>; + .... + clocks = <&apcs_glb>; + operating-points-v2 = <&cpu_opp_table>; + power-domains = <&cprpd>; + power-domain-names = "cpr"; + }; + + CPU1: cpu@101 { + device_type = "cpu"; + compatible = "arm,cortex-a53"; + reg = <0x101>; + .... + clocks = <&apcs_glb>; + operating-points-v2 = <&cpu_opp_table>; + power-domains = <&cprpd>; + power-domain-names = "cpr"; + }; + + CPU2: cpu@102 { + device_type = "cpu"; + compatible = "arm,cortex-a53"; + reg = <0x102>; + .... + clocks = <&apcs_glb>; + operating-points-v2 = <&cpu_opp_table>; + power-domains = <&cprpd>; + power-domain-names = "cpr"; + }; + + CPU3: cpu@103 { + device_type = "cpu"; + compatible = "arm,cortex-a53"; + reg = <0x103>; + .... + clocks = <&apcs_glb>; + operating-points-v2 = <&cpu_opp_table>; + power-domains = <&cprpd>; + power-domain-names = "cpr"; + }; + }; + + cpu_opp_table: cpu-opp-table { + compatible = "operating-points-v2-kryo-cpu"; + opp-shared; + + opp-1094400000 { + opp-hz = /bits/ 64 <1094400000>; + required-opps = <&cpr_opp1>; + }; + opp-1248000000 { + opp-hz = /bits/ 64 <1248000000>; + required-opps = <&cpr_opp2>; + }; + opp-1401600000 { + opp-hz = /bits/ 64 <1401600000>; + required-opps = <&cpr_opp3>; + }; + }; + + cpr_opp_table: cpr-opp-table { + compatible = "operating-points-v2-qcom-level"; + + cpr_opp1: opp1 { + opp-level = <1>; + qcom,opp-fuse-level = <1>; + }; + cpr_opp2: opp2 { + opp-level = <2>; + qcom,opp-fuse-level = <2>; + }; + cpr_opp3: opp3 { + opp-level = <3>; + qcom,opp-fuse-level = <3>; + }; + }; + +.... + +soc { +.... + cprpd: cpr@b018000 { + compatible = "qcom,qcs404-cpr", "qcom,cpr"; + reg = <0x0b018000 0x1000>; + .... + vdd-apc-supply = <&pms405_s3>; + #power-domain-cells = <0>; + operating-points-v2 = <&cpr_opp_table>; + .... + }; +};