From patchwork Wed Aug 30 14:41:20 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Dietmar Eggemann X-Patchwork-Id: 111316 Delivered-To: patch@linaro.org Received: by 10.140.95.112 with SMTP id h103csp1039578qge; Wed, 30 Aug 2017 07:41:57 -0700 (PDT) X-Received: by 10.84.194.131 with SMTP id h3mr2229177pld.68.1504104117580; Wed, 30 Aug 2017 07:41:57 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1504104117; cv=none; d=google.com; s=arc-20160816; b=OK5MskfKnSqo/dgDxtfpJVzn91MgeiliMmIvgwWv4QRC5lfMRMFsnBFXzhSPhQlLM0 VVxg7/JRfuzU035YD+dohqsomyT+zFEMHBzowG2op55U1N2ecx2AzdDX58ZkypRiTsD9 sqZ1bWKy3hQOnfZpgfX1TPBmhWjGtF2K1M+0jEDSfTFTqFGM0gFUw+b6IlN/HSBFKA3b zrFTBTCAh6quLN2+FD7gsgA2o+BScS1Pd0Di9shi1IqPHifzWrn2tQiPYJdD2wvXTRAi A53sgSyCmm8muXyk9iMtCmeHRB3oyAZHr26/ykS/Nq1ngRoHRpDs1pSSfcfEeOEyjrMO nETg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :arc-authentication-results; bh=myAEr7jOpOI3tZ+eLxQCGPGIeu2ZS1hukaK3M3pHkoM=; b=vV41Yv9N7e0T0m8+OOhMIGJO0Ps3cf00GuuhgJQ3au99xYsorkW6pnYEq4oIJyg/nE nq49bQZ3xkMdQAQTJQSfiHOoYqnsHuNyw+Y2KIkw8BXId+JqKMuIm7rHw8rt+9LaREKb S1hrwbj2V3y+G18hOQjGmbD17ECToPyxG327Hw2DNIqaWctGuQbDqDS+5WwQ/Lrn9Ef0 JUCVV6J5C5TJHx6rgRxYLDwtQ6gVmKgvkweo0uPLATeXh64wyXeT91D6EEu3Y7c2jNtu HlOwAzFDCfNfPOKzYolN7xAOh5s0VvLcjQEplnWAt4UToOlnRnZfpB22V23n1ZrkjEFT 81Lw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id x6si4595079pfj.167.2017.08.30.07.41.57; Wed, 30 Aug 2017 07:41:57 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751791AbdH3Olz (ORCPT + 26 others); Wed, 30 Aug 2017 10:41:55 -0400 Received: from foss.arm.com ([217.140.101.70]:45570 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751730AbdH3Olx (ORCPT ); Wed, 30 Aug 2017 10:41:53 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id E1FAD164F; Wed, 30 Aug 2017 07:41:52 -0700 (PDT) Received: from e107985-lin.cambridge.arm.com (e107985-lin.cambridge.arm.com [10.1.210.41]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id CCEF83F483; Wed, 30 Aug 2017 07:41:50 -0700 (PDT) From: Dietmar Eggemann To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-renesas-soc@vger.kernel.org Cc: Russell King , Rob Herring , Mark Rutland , Kukjin Kim , Krzysztof Kozlowski , Vincent Guittot , Juri Lelli Subject: [PATCH 4/4] arm: dts: r8a7790: add cpu capacity-dmips-mhz information Date: Wed, 30 Aug 2017 15:41:20 +0100 Message-Id: <20170830144120.9312-5-dietmar.eggemann@arm.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170830144120.9312-1-dietmar.eggemann@arm.com> References: <20170830144120.9312-1-dietmar.eggemann@arm.com> MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The following 'capacity-dmips-mhz' dt property values are used: Cortex-A15: 1024, Cortex-A7: 539 They have been derived form the cpu_efficiency values: Cortex-A15: 3891, Cortex-A7: 2048 by scaling them so that the Cortex-A15s (big cores) use 1024. The cpu_efficiency values were originally derived from the "Big.LITTLE Processing with ARM Cortex™-A15 & Cortex-A7" white paper (http://www.cl.cam.ac.uk/~rdm34/big.LITTLE.pdf). Table 1 lists 1.9x (3891/2048) as the Cortex-A15 vs Cortex-A7 performance ratio for the Dhrystone benchmark. The following platform is affected once cpu-invariant accounting support is re-connected to the task scheduler: r8a7790-lager Cc: Rob Herring Cc: Mark Rutland Cc: Russell King Signed-off-by: Dietmar Eggemann --- arch/arm/boot/dts/r8a7790.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+) -- 2.11.0 diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi index 2805a8608d4b..a57c0e170d8b 100644 --- a/arch/arm/boot/dts/r8a7790.dtsi +++ b/arch/arm/boot/dts/r8a7790.dtsi @@ -56,6 +56,7 @@ clock-latency = <300000>; /* 300 us */ power-domains = <&sysc R8A7790_PD_CA15_CPU0>; next-level-cache = <&L2_CA15>; + capacity-dmips-mhz = <1024>; /* kHz - uV - OPPs unknown yet */ operating-points = <1400000 1000000>, @@ -73,6 +74,7 @@ clock-frequency = <1300000000>; power-domains = <&sysc R8A7790_PD_CA15_CPU1>; next-level-cache = <&L2_CA15>; + capacity-dmips-mhz = <1024>; }; cpu2: cpu@2 { @@ -82,6 +84,7 @@ clock-frequency = <1300000000>; power-domains = <&sysc R8A7790_PD_CA15_CPU2>; next-level-cache = <&L2_CA15>; + capacity-dmips-mhz = <1024>; }; cpu3: cpu@3 { @@ -91,6 +94,7 @@ clock-frequency = <1300000000>; power-domains = <&sysc R8A7790_PD_CA15_CPU3>; next-level-cache = <&L2_CA15>; + capacity-dmips-mhz = <1024>; }; cpu4: cpu@100 { @@ -100,6 +104,7 @@ clock-frequency = <780000000>; power-domains = <&sysc R8A7790_PD_CA7_CPU0>; next-level-cache = <&L2_CA7>; + capacity-dmips-mhz = <539>; }; cpu5: cpu@101 { @@ -109,6 +114,7 @@ clock-frequency = <780000000>; power-domains = <&sysc R8A7790_PD_CA7_CPU1>; next-level-cache = <&L2_CA7>; + capacity-dmips-mhz = <539>; }; cpu6: cpu@102 { @@ -118,6 +124,7 @@ clock-frequency = <780000000>; power-domains = <&sysc R8A7790_PD_CA7_CPU2>; next-level-cache = <&L2_CA7>; + capacity-dmips-mhz = <539>; }; cpu7: cpu@103 { @@ -127,6 +134,7 @@ clock-frequency = <780000000>; power-domains = <&sysc R8A7790_PD_CA7_CPU3>; next-level-cache = <&L2_CA7>; + capacity-dmips-mhz = <539>; }; L2_CA15: cache-controller-0 {