From patchwork Mon Nov 26 12:54:57 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 10698217 X-Patchwork-Delegate: horms@verge.net.au 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 1580313AD for ; Mon, 26 Nov 2018 12:55:51 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 04E5C297A2 for ; Mon, 26 Nov 2018 12:55:51 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id ED867297AD; Mon, 26 Nov 2018 12:55:50 +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=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI 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 760AC297A2 for ; Mon, 26 Nov 2018 12:55:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726882AbeKZXtx (ORCPT ); Mon, 26 Nov 2018 18:49:53 -0500 Received: from kirsty.vergenet.net ([202.4.237.240]:35272 "EHLO kirsty.vergenet.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726411AbeKZXtw (ORCPT ); Mon, 26 Nov 2018 18:49:52 -0500 Received: from reginn.horms.nl (watermunt.horms.nl [80.127.179.77]) by kirsty.vergenet.net (Postfix) with ESMTPA id F34B125BF40; Mon, 26 Nov 2018 23:55:11 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=verge.net.au; s=mail; t=1543236912; bh=DANqpPGMXe7CQOAAw2GjVT2xkYxkuhUCXyTtOTRKUHc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rdXEQj5lvIximo0EvJA2+1xsZ5vkmo7xdTZz4UIztHaXH8X2YYY7FJ3s2pPsmYpoQ JZn6AEYnMBUOaLjoq6LScG0ZE6i1zTc/dlUn8agptTvY9Yg2Cc7kSJBlgV+5i/XUhk hLaloZnmFZfVWu+6ZbylQtEJSCX/aaUNMbwDmIQw= Received: by reginn.horms.nl (Postfix, from userid 7100) id B7C7A940AF8; Mon, 26 Nov 2018 13:55:09 +0100 (CET) From: Simon Horman To: linux-renesas-soc@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, Magnus Damm , Gaku Inami , Simon Horman Subject: [PATCH 31/40] arm64: dts: renesas: Add CPU capacity-dmips-mhz Date: Mon, 26 Nov 2018 13:54:57 +0100 Message-Id: <2250d856b279d992c392170860a78c2482b1859c.1543229515.git.horms+renesas@verge.net.au> X-Mailer: git-send-email 2.11.0 In-Reply-To: References: Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Gaku Inami Set the capacity-dmips-mhz for R-Car Gen3 SoCs, that is based on dhrystone. The average in 10 times of dhrystone result as follows: r8a7795 SoC (A57x4 + A53x4) CPU max-freq dhrystone --------------------------------- A57 1500 MHz 11470943 lps/s A53 1200 MHz 4798583 lps/s r8a7796 SoC (A57x2 + A53x4) CPU max-freq dhrystone --------------------------------- A57 1500 MHz 11463526 lps/s A53 1200 MHz 4793276 lps/s Based on above, capacity-dmips-mhz values are calculated as follows: r8a7795 SoC A57 : 1024 / (11470943 / 1500) * (11470943 / 1500) = 1024 A53 : 1024 / (11470943 / 1500) * ( 4798583 / 1200) = 535 r8a7796 SoC A57 : 1024 / (11463526 / 1500) * (11463526 / 1500) = 1024 A53 : 1024 / (11463526 / 1500) * ( 4793276 / 1200) = 535 However, since each CPUs have different max frequencies, the final CPU capacities of A53 are scaled by this difference, the values are as follows. [r8a7795 SoC] $ cat /sys/devices/system/cpu/cpu*/cpu_capacity 1024 <---- CPU capacity of A57 1024 1024 1024 428 <---- CPU capacity of A53 428 428 428 [r8a7796 SoC] $ cat /sys/devices/system/cpu/cpu*/cpu_capacity 1024 <---- CPU capacity of A57 1024 428 <---- CPU capacity of A53 428 428 428 Signed-off-by: Gaku Inami Reviewed-by: Geert Uytterhoeven Signed-off-by: Simon Horman --- arch/arm64/boot/dts/renesas/r8a7795.dtsi | 8 ++++++++ arch/arm64/boot/dts/renesas/r8a7796.dtsi | 6 ++++++ 2 files changed, 14 insertions(+) diff --git a/arch/arm64/boot/dts/renesas/r8a7795.dtsi b/arch/arm64/boot/dts/renesas/r8a7795.dtsi index 408ff4e8170a..e94a5f2dbd08 100644 --- a/arch/arm64/boot/dts/renesas/r8a7795.dtsi +++ b/arch/arm64/boot/dts/renesas/r8a7795.dtsi @@ -157,6 +157,7 @@ enable-method = "psci"; clocks = <&cpg CPG_CORE R8A7795_CLK_Z>; operating-points-v2 = <&cluster0_opp>; + capacity-dmips-mhz = <1024>; #cooling-cells = <2>; }; @@ -169,6 +170,7 @@ enable-method = "psci"; clocks = <&cpg CPG_CORE R8A7795_CLK_Z>; operating-points-v2 = <&cluster0_opp>; + capacity-dmips-mhz = <1024>; #cooling-cells = <2>; }; @@ -181,6 +183,7 @@ enable-method = "psci"; clocks = <&cpg CPG_CORE R8A7795_CLK_Z>; operating-points-v2 = <&cluster0_opp>; + capacity-dmips-mhz = <1024>; #cooling-cells = <2>; }; @@ -193,6 +196,7 @@ enable-method = "psci"; clocks = <&cpg CPG_CORE R8A7795_CLK_Z>; operating-points-v2 = <&cluster0_opp>; + capacity-dmips-mhz = <1024>; #cooling-cells = <2>; }; @@ -205,6 +209,7 @@ enable-method = "psci"; clocks = <&cpg CPG_CORE R8A7795_CLK_Z2>; operating-points-v2 = <&cluster1_opp>; + capacity-dmips-mhz = <535>; }; a53_1: cpu@101 { @@ -216,6 +221,7 @@ enable-method = "psci"; clocks = <&cpg CPG_CORE R8A7795_CLK_Z2>; operating-points-v2 = <&cluster1_opp>; + capacity-dmips-mhz = <535>; }; a53_2: cpu@102 { @@ -227,6 +233,7 @@ enable-method = "psci"; clocks = <&cpg CPG_CORE R8A7795_CLK_Z2>; operating-points-v2 = <&cluster1_opp>; + capacity-dmips-mhz = <535>; }; a53_3: cpu@103 { @@ -238,6 +245,7 @@ enable-method = "psci"; clocks = <&cpg CPG_CORE R8A7795_CLK_Z2>; operating-points-v2 = <&cluster1_opp>; + capacity-dmips-mhz = <535>; }; L2_CA57: cache-controller-0 { diff --git a/arch/arm64/boot/dts/renesas/r8a7796.dtsi b/arch/arm64/boot/dts/renesas/r8a7796.dtsi index b12bf73bb03b..369d0bccc651 100644 --- a/arch/arm64/boot/dts/renesas/r8a7796.dtsi +++ b/arch/arm64/boot/dts/renesas/r8a7796.dtsi @@ -162,6 +162,7 @@ enable-method = "psci"; clocks = <&cpg CPG_CORE R8A7796_CLK_Z>; operating-points-v2 = <&cluster0_opp>; + capacity-dmips-mhz = <1024>; #cooling-cells = <2>; }; @@ -174,6 +175,7 @@ enable-method = "psci"; clocks = <&cpg CPG_CORE R8A7796_CLK_Z>; operating-points-v2 = <&cluster0_opp>; + capacity-dmips-mhz = <1024>; #cooling-cells = <2>; }; @@ -186,6 +188,7 @@ enable-method = "psci"; clocks = <&cpg CPG_CORE R8A7796_CLK_Z2>; operating-points-v2 = <&cluster1_opp>; + capacity-dmips-mhz = <535>; }; a53_1: cpu@101 { @@ -197,6 +200,7 @@ enable-method = "psci"; clocks = <&cpg CPG_CORE R8A7796_CLK_Z2>; operating-points-v2 = <&cluster1_opp>; + capacity-dmips-mhz = <535>; }; a53_2: cpu@102 { @@ -208,6 +212,7 @@ enable-method = "psci"; clocks = <&cpg CPG_CORE R8A7796_CLK_Z2>; operating-points-v2 = <&cluster1_opp>; + capacity-dmips-mhz = <535>; }; a53_3: cpu@103 { @@ -219,6 +224,7 @@ enable-method = "psci"; clocks = <&cpg CPG_CORE R8A7796_CLK_Z2>; operating-points-v2 = <&cluster1_opp>; + capacity-dmips-mhz = <535>; }; L2_CA57: cache-controller-0 {