Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755784AbYGOKnY (ORCPT ); Tue, 15 Jul 2008 06:43:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754807AbYGOKnQ (ORCPT ); Tue, 15 Jul 2008 06:43:16 -0400 Received: from kuber.nabble.com ([216.139.236.158]:36747 "EHLO kuber.nabble.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754683AbYGOKnQ (ORCPT ); Tue, 15 Jul 2008 06:43:16 -0400 Message-ID: <18462244.post@talk.nabble.com> Date: Tue, 15 Jul 2008 03:43:14 -0700 (PDT) From: Hebbar To: linux-kernel@vger.kernel.org Subject: need help to enable ARM AMBA PL031 RTC MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Nabble-From: gururajakr@sanyo.co.in Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1086 Lines: 41 I all, I am working on customized arm versatile board and i am trying to use ARM AMBA PL031 RTC. i enabled CONFIG_RTC_DRV_PL031=y But the date never changes or updates. / # cat /sys/class/rtc/rtc0/time 00:00:00 When i went through the Ref Manual of ARM AMBA PL031 RTC i found that we need to enable or set high to RTC START bit (bit 0) in RTC Control Register ( 0x0C ). but in rtc-pl031.c, RTC_START is no where set in RTC CONTROL Register. I think we need to enable it in rtc_probe func after rtc_device_register returns success. #define RTC_CR_MIE (1 << 0) __raw_writel(RTC_CR_MIE, ldata->base + RTC_CR); Kindly Comment. Regards Gururaja -- View this message in context: http://www.nabble.com/need-help-to-enable-ARM-AMBA-PL031-RTC-tp18462244p18462244.html Sent from the linux-kernel mailing list archive at Nabble.com. -- 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/