From patchwork Fri Aug 28 08:16:09 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Javier Martinez Canillas X-Patchwork-Id: 7090341 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id D54E89F22E for ; Fri, 28 Aug 2015 08:18:46 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0108B208F4 for ; Fri, 28 Aug 2015 08:18:46 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 071AE208ED for ; Fri, 28 Aug 2015 08:18:45 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZVEq6-0004ie-OA; Fri, 28 Aug 2015 08:16:46 +0000 Received: from lists.s-osg.org ([54.187.51.154]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZVEq4-0004eJ-08 for linux-arm-kernel@lists.infradead.org; Fri, 28 Aug 2015 08:16:44 +0000 Received: from localhost.localdomain (120.101.23.95.dynamic.jazztel.es [95.23.101.120]) by lists.s-osg.org (Postfix) with ESMTPSA id 6A2E746328; Fri, 28 Aug 2015 01:16:17 -0700 (PDT) From: Javier Martinez Canillas To: linux-kernel@vger.kernel.org Subject: [PATCH] ARM: exynos_defconfig: Enable big.LITTLE CPUidle support Date: Fri, 28 Aug 2015 10:16:09 +0200 Message-Id: <1440749769-10135-1-git-send-email-javier@osg.samsung.com> X-Mailer: git-send-email 2.4.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150828_011644_075900_E4374167 X-CRM114-Status: GOOD ( 10.86 ) X-Spam-Score: -2.6 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Krzysztof Kozlowski , linux-samsung-soc@vger.kernel.org, Russell King , Anand Moon , Lukasz Majewski , Javier Martinez Canillas , Sjoerd Simons , Kukjin Kim , Thierry Reding , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-5.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Some Exynos big.LITTLE boards (i.e: Exynos5420 and Exynos5800 based Chromebooks) have proper firmware that allow the big.LITTLE CPUidle driver to work correctly, so enable support for this. Signed-off-by: Javier Martinez Canillas --- Kukjin and Krzysztof, As you know there are other boards like the Exynos5422 based Odroid XU{3,4} whose firmware is broken due leaving CCI in secure mode which means that the kernel MCPM support can't properly manage CCI. So if you pick this patch, it should be tested in kernelci before appearing in linux-next to prevent any boot issues. But if that happens, I believe that is better to do a fix / workaround in those broken platforms since nothing prevents users to enable this option anyways. For example the CCI device node could be disabled in the DTS. arch/arm/configs/exynos_defconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig index 729e2fae3e58..228ee945b8ed 100644 --- a/arch/arm/configs/exynos_defconfig +++ b/arch/arm/configs/exynos_defconfig @@ -30,6 +30,7 @@ CONFIG_CPU_FREQ=y CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y CONFIG_CPUFREQ_DT=y CONFIG_CPU_IDLE=y +CONFIG_ARM_BIG_LITTLE_CPUIDLE=y CONFIG_ARM_EXYNOS_CPUIDLE=y CONFIG_VFP=y CONFIG_NEON=y