From patchwork Wed Aug 30 14:41:19 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Dietmar Eggemann X-Patchwork-Id: 111317 Delivered-To: patch@linaro.org Received: by 10.140.95.112 with SMTP id h103csp1039945qge; Wed, 30 Aug 2017 07:42:13 -0700 (PDT) X-Received: by 10.84.213.151 with SMTP id g23mr2178023pli.285.1504104133545; Wed, 30 Aug 2017 07:42:13 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1504104133; cv=none; d=google.com; s=arc-20160816; b=txdxx55RsfyfkjOJyEtsGkPkn6ng2S5OifwwNmELPUY3C+LSWVHhHW5EB1iiIZwuQr HNwvTeq0p2XF3kdJ8kx4fC/L7/6P1A4/+SngnrZwAyKK3Edq9yfwNUDHm6gt87yAS70g Hld1nNWRu29AYczB6UUH/2XNjWzBfXGfcr35r5QOa64cKvKaxDgx+yQyZNI4jz5okwpi Job/eH9QkNp5dxErehhHC3+nw6Spfrl/xWuDtiOMhaPb3+bvvx66FpkAM2wHF7XjpLro 8SUTExbh8lFPN/DTAWFSzkHa6dqf48r9CBZBnZ8/x1C22Xcmw9tVlf5Z7MeVGqWBzNW3 P/Fw== 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=9Z8aL7dHxO1SS+hTJtsg7+tBbzgfsUfBdFb50v34jRQ=; b=ADakMU3u601kElnmDZXd7Nti3dnZ/VrI7wsA+BMxJyJuSzryFOK28j7DioeetCEHAP ZCrZphZ2iDrpXa6wB5f43pvGYz1Jt2Ht+WDMzcKYE0YdP/Qp8+ZWxvE7DjjRHE5BrRCC ZJnX+zW7oCXsGydOBgms2WTbAJuHFjykE37Y+8A0JcON1WyC4zwfZ+yDmGuUhkrA9Kp7 yKYpvAyDFRgtWjaPcSHoDeAgxUMIQp8OnFWELUxrfuq3GJw9pnERG/c711rJF0dDI1Sh ydq6osxhhPj1u+M95G1me0w4RDbyOj2+RvPAfrC+J9OCEeBncfeFjZCR8dGq/xnbIRFR juyQ== 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 h7si4901363plk.616.2017.08.30.07.42.12; Wed, 30 Aug 2017 07:42:13 -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 S1751758AbdH3Oly (ORCPT + 26 others); Wed, 30 Aug 2017 10:41:54 -0400 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:45556 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751716AbdH3Olu (ORCPT ); Wed, 30 Aug 2017 10:41:50 -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 918DA1610; Wed, 30 Aug 2017 07:41:50 -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 7C5273F483; Wed, 30 Aug 2017 07:41:48 -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 3/4] arm: dts: exynos: add exynos5422 cpu capacity-dmips-mhz information Date: Wed, 30 Aug 2017 15:41:19 +0100 Message-Id: <20170830144120.9312-4-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 platforms are affected once cpu-invariant accounting support is re-connected to the task scheduler: odroidxu3, odroidxu3-lite, odroidxu4 Cc: Rob Herring Cc: Mark Rutland Cc: Russell King Cc: Kukjin Kim Cc: Krzysztof Kozlowski Signed-off-by: Dietmar Eggemann --- arch/arm/boot/dts/exynos5422-cpus.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+) -- 2.11.0 diff --git a/arch/arm/boot/dts/exynos5422-cpus.dtsi b/arch/arm/boot/dts/exynos5422-cpus.dtsi index bf3c6f1ec4ee..ec01d8020c2d 100644 --- a/arch/arm/boot/dts/exynos5422-cpus.dtsi +++ b/arch/arm/boot/dts/exynos5422-cpus.dtsi @@ -35,6 +35,7 @@ cooling-min-level = <0>; cooling-max-level = <11>; #cooling-cells = <2>; /* min followed by max */ + capacity-dmips-mhz = <539>; }; cpu1: cpu@101 { @@ -47,6 +48,7 @@ cooling-min-level = <0>; cooling-max-level = <11>; #cooling-cells = <2>; /* min followed by max */ + capacity-dmips-mhz = <539>; }; cpu2: cpu@102 { @@ -59,6 +61,7 @@ cooling-min-level = <0>; cooling-max-level = <11>; #cooling-cells = <2>; /* min followed by max */ + capacity-dmips-mhz = <539>; }; cpu3: cpu@103 { @@ -71,6 +74,7 @@ cooling-min-level = <0>; cooling-max-level = <11>; #cooling-cells = <2>; /* min followed by max */ + capacity-dmips-mhz = <539>; }; cpu4: cpu@0 { @@ -84,6 +88,7 @@ cooling-min-level = <0>; cooling-max-level = <15>; #cooling-cells = <2>; /* min followed by max */ + capacity-dmips-mhz = <1024>; }; cpu5: cpu@1 { @@ -96,6 +101,7 @@ cooling-min-level = <0>; cooling-max-level = <15>; #cooling-cells = <2>; /* min followed by max */ + capacity-dmips-mhz = <1024>; }; cpu6: cpu@2 { @@ -108,6 +114,7 @@ cooling-min-level = <0>; cooling-max-level = <15>; #cooling-cells = <2>; /* min followed by max */ + capacity-dmips-mhz = <1024>; }; cpu7: cpu@3 { @@ -120,6 +127,7 @@ cooling-min-level = <0>; cooling-max-level = <15>; #cooling-cells = <2>; /* min followed by max */ + capacity-dmips-mhz = <1024>; }; }; };