From patchwork Tue Jul 21 22:08:30 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Hilman X-Patchwork-Id: 36627 X-Patchwork-Delegate: khilman@deeprootsystems.com Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id n6LM8s2l002321 for ; Tue, 21 Jul 2009 22:08:55 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755916AbZGUWIw (ORCPT ); Tue, 21 Jul 2009 18:08:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755940AbZGUWIw (ORCPT ); Tue, 21 Jul 2009 18:08:52 -0400 Received: from mail-pz0-f204.google.com ([209.85.222.204]:42991 "EHLO mail-pz0-f204.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755916AbZGUWIw (ORCPT ); Tue, 21 Jul 2009 18:08:52 -0400 Received: by mail-pz0-f204.google.com with SMTP id 42so701151pzk.33 for ; Tue, 21 Jul 2009 15:08:52 -0700 (PDT) Received: by 10.142.154.14 with SMTP id b14mr49189wfe.67.1248214132369; Tue, 21 Jul 2009 15:08:52 -0700 (PDT) Received: from localhost (deeprooted.net [216.254.16.51]) by mx.google.com with ESMTPS id 30sm17427148wfc.11.2009.07.21.15.08.51 (version=TLSv1/SSLv3 cipher=RC4-MD5); Tue, 21 Jul 2009 15:08:51 -0700 (PDT) From: Kevin Hilman To: linux-arm-kernel@lists.arm.linux.org.uk Cc: linux-omap@vger.kernel.org Subject: [PATCH 04/14] OMAP3: PM: Clear pending PRCM reset flags on init Date: Tue, 21 Jul 2009 15:08:30 -0700 Message-Id: <1248214120-18886-5-git-send-email-khilman@deeprootsystems.com> X-Mailer: git-send-email 1.6.3.3 In-Reply-To: <1248214120-18886-4-git-send-email-khilman@deeprootsystems.com> References: <1248214120-18886-1-git-send-email-khilman@deeprootsystems.com> <1248214120-18886-2-git-send-email-khilman@deeprootsystems.com> <1248214120-18886-3-git-send-email-khilman@deeprootsystems.com> <1248214120-18886-4-git-send-email-khilman@deeprootsystems.com> Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org Any pending reset flags can prevent retention. Ensure they are all cleared during boot. Signed-off-by: Kevin Hilman --- arch/arm/mach-omap2/pm34xx.c | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c index cc83dfc..1422e93 100644 --- a/arch/arm/mach-omap2/pm34xx.c +++ b/arch/arm/mach-omap2/pm34xx.c @@ -613,6 +613,15 @@ static void __init prcm_setup_regs(void) /* Clear any pending PRCM interrupts */ prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET); + /* Clear any pending 'reset' flags */ + prm_write_mod_reg(0xffffffff, MPU_MOD, RM_RSTST); + prm_write_mod_reg(0xffffffff, CORE_MOD, RM_RSTST); + prm_write_mod_reg(0xffffffff, OMAP3430_PER_MOD, RM_RSTST); + prm_write_mod_reg(0xffffffff, OMAP3430_EMU_MOD, RM_RSTST); + prm_write_mod_reg(0xffffffff, OMAP3430_NEON_MOD, RM_RSTST); + prm_write_mod_reg(0xffffffff, OMAP3430_DSS_MOD, RM_RSTST); + prm_write_mod_reg(0xffffffff, OMAP3430ES2_USBHOST_MOD, RM_RSTST); + /* Clear any pending PRCM interrupts */ prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET);