Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751788AbbH1IQY (ORCPT ); Fri, 28 Aug 2015 04:16:24 -0400 Received: from lists.s-osg.org ([54.187.51.154]:60668 "EHLO lists.s-osg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751418AbbH1IQU (ORCPT ); Fri, 28 Aug 2015 04:16:20 -0400 From: Javier Martinez Canillas To: linux-kernel@vger.kernel.org Cc: Javier Martinez Canillas , Kukjin Kim , Thierry Reding , Anand Moon , Russell King , linux-samsung-soc@vger.kernel.org, Krzysztof Kozlowski , Sjoerd Simons , Lukasz Majewski , linux-arm-kernel@lists.infradead.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 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1564 Lines: 43 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 -- 2.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/