From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751319Ab1HJNT5 (ORCPT ); Wed, 10 Aug 2011 09:19:57 -0400 Received: from arroyo.ext.ti.com ([192.94.94.40]:50116 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750857Ab1HJNT4 (ORCPT ); Wed, 10 Aug 2011 09:19:56 -0400 From: Hemant Pedanekar To: CC: Tony Lindgren , Russell King , , , Hemant Pedanekar Subject: [PATCH v2] omap: timer: Set dmtimer used as clocksource in autoreload mode Date: Wed, 10 Aug 2011 18:49:35 +0530 Message-ID: <1312982375-11848-1-git-send-email-hemantp@ti.com> X-Mailer: git-send-email 1.7.3.5 MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If CONFIG_OMAP_32K_TIMER is not selected and dmtimer is used as clocksource, the timer stops counting once overflow occurs as it was not set in autoreload mode. This results into timekeeping failure: for example, 'sleep 1' at the shell after the timer counter overflow would hang. This patch sets up autoreload when starting the clocksource timer which fixes the above issue. Signed-off-by: Hemant Pedanekar --- arch/arm/mach-omap2/timer.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c index e964072..cf1de7d 100644 --- a/arch/arm/mach-omap2/timer.c +++ b/arch/arm/mach-omap2/timer.c @@ -293,7 +293,8 @@ static void __init omap2_gp_clocksource_init(int gptimer_id, pr_info("OMAP clocksource: GPTIMER%d at %lu Hz\n", gptimer_id, clksrc.rate); - __omap_dm_timer_load_start(clksrc.io_base, OMAP_TIMER_CTRL_ST, 0, 1); + __omap_dm_timer_load_start(clksrc.io_base, + OMAP_TIMER_CTRL_ST | OMAP_TIMER_CTRL_AR, 0, 1); init_sched_clock(&cd, dmtimer_update_sched_clock, 32, clksrc.rate); if (clocksource_register_hz(&clocksource_gpt, clksrc.rate)) -- 1.7.3.5