From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755483Ab3K0BGU (ORCPT ); Tue, 26 Nov 2013 20:06:20 -0500 Received: from mail-pb0-f48.google.com ([209.85.160.48]:40556 "EHLO mail-pb0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759118Ab3K0BFb (ORCPT ); Tue, 26 Nov 2013 20:05:31 -0500 From: Soren Brinkmann To: Rob Herring , Pawel Moll , Mark Rutland , Stephen Warren , Ian Campbell , Russell King , Michal Simek , Daniel Lezcano , Thomas Gleixner Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Soren Brinkmann Subject: [PATCH v2 8/9] arm: zynq: Don't use arm_global_timer with cpufreq Date: Tue, 26 Nov 2013 17:04:55 -0800 Message-Id: <1385514296-26702-9-git-send-email-soren.brinkmann@xilinx.com> X-Mailer: git-send-email 1.8.4.4 In-Reply-To: <1385514296-26702-1-git-send-email-soren.brinkmann@xilinx.com> References: <1385514296-26702-1-git-send-email-soren.brinkmann@xilinx.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The timer frequency of the arm_global_timer depends on the CPU frequency. With cpufreq altering that frequency the arm_global_timer does not maintain a stable time base. Therefore don't enable that timer in case cpufreq is enabled. Signed-off-by: Soren Brinkmann --- arch/arm/mach-zynq/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-zynq/Kconfig b/arch/arm/mach-zynq/Kconfig index 6b04260aa142..f84fab14f0b7 100644 --- a/arch/arm/mach-zynq/Kconfig +++ b/arch/arm/mach-zynq/Kconfig @@ -13,6 +13,6 @@ config ARCH_ZYNQ select HAVE_SMP select SPARSE_IRQ select CADENCE_TTC_TIMER - select ARM_GLOBAL_TIMER + select ARM_GLOBAL_TIMER if !CPU_FREQ help Support for Xilinx Zynq ARM Cortex A9 Platform -- 1.8.4.4 From mboxrd@z Thu Jan 1 00:00:00 1970 From: soren.brinkmann@xilinx.com (Soren Brinkmann) Date: Tue, 26 Nov 2013 17:04:55 -0800 Subject: [PATCH v2 8/9] arm: zynq: Don't use arm_global_timer with cpufreq In-Reply-To: <1385514296-26702-1-git-send-email-soren.brinkmann@xilinx.com> References: <1385514296-26702-1-git-send-email-soren.brinkmann@xilinx.com> Message-ID: <1385514296-26702-9-git-send-email-soren.brinkmann@xilinx.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org The timer frequency of the arm_global_timer depends on the CPU frequency. With cpufreq altering that frequency the arm_global_timer does not maintain a stable time base. Therefore don't enable that timer in case cpufreq is enabled. Signed-off-by: Soren Brinkmann --- arch/arm/mach-zynq/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-zynq/Kconfig b/arch/arm/mach-zynq/Kconfig index 6b04260aa142..f84fab14f0b7 100644 --- a/arch/arm/mach-zynq/Kconfig +++ b/arch/arm/mach-zynq/Kconfig @@ -13,6 +13,6 @@ config ARCH_ZYNQ select HAVE_SMP select SPARSE_IRQ select CADENCE_TTC_TIMER - select ARM_GLOBAL_TIMER + select ARM_GLOBAL_TIMER if !CPU_FREQ help Support for Xilinx Zynq ARM Cortex A9 Platform -- 1.8.4.4