From patchwork Fri Sep 27 06:37:59 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jean-Christophe PLAGNIOL-VILLARD X-Patchwork-Id: 2953051 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id B1A04BFF0B for ; Fri, 27 Sep 2013 06:37:18 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B0D8B2021F for ; Fri, 27 Sep 2013 06:37:17 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 07DC320204 for ; Fri, 27 Sep 2013 06:37:16 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VPRfq-0002TL-JM; Fri, 27 Sep 2013 06:37:10 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VPRfn-0008Ly-Rq; Fri, 27 Sep 2013 06:37:07 +0000 Received: from 5.mo2.mail-out.ovh.net ([87.98.181.248] helo=mo2.mail-out.ovh.net) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VPRfl-0008L1-Cr for linux-arm-kernel@lists.infradead.org; Fri, 27 Sep 2013 06:37:06 +0000 Received: from mail195.ha.ovh.net (b6.ovh.net [213.186.33.56]) by mo2.mail-out.ovh.net (Postfix) with SMTP id A2724DC1EB9 for ; Fri, 27 Sep 2013 08:36:41 +0200 (CEST) Received: from b0.ovh.net (HELO queueout) (213.186.33.50) by b0.ovh.net with SMTP; 27 Sep 2013 08:44:07 +0200 Received: from ns203013.ovh.net (HELO localhost) (plagnioj%jcrosoft.com@91.121.171.124) by ns0.ovh.net with SMTP; 27 Sep 2013 08:44:05 +0200 From: Jean-Christophe PLAGNIOL-VILLARD To: linux-arm-kernel@lists.infradead.org X-Ovh-Mailout: 178.32.228.2 (mo2.mail-out.ovh.net) Subject: [PATCH v2] ARM: at91: sam9g45: shutdown ddr1 too when rebooting Date: Fri, 27 Sep 2013 08:37:59 +0200 Message-Id: <1380263879-16325-1-git-send-email-plagnioj@jcrosoft.com> X-Mailer: git-send-email 1.8.4.rc3 X-Ovh-Tracer-Id: 2969279531044416509 X-Ovh-Remote: 91.121.171.124 (ns203013.ovh.net) X-Ovh-Local: 213.186.33.20 (ns0.ovh.net) X-OVH-SPAMSTATE: OK X-OVH-SPAMSCORE: 0 X-OVH-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrfeeiledrtdelucetufdoteggodetrfcurfhrohhfihhlvgemucfqggfjnecuuegrihhlohhuthemuceftddtnecu X-Spam-Check: DONE|U 0.5/N X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: 0 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrfeeiledrtdelucetufdoteggodetrfcurfhrohhfihhlvgemucfqggfjnecuuegrihhlohhuthemuceftddtnecu X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130927_023705_558134_CE89875A X-CRM114-Status: UNSURE ( 9.74 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -1.9 (-) Cc: Jean-Christophe PLAGNIOL-VILLARD X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-6.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP as on ddr0 we need to cleanly shutdown ddr1 if used before rebooting Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD Acked-by: Nicolas Ferre --- v2: use ldr r5, [r5, #4] Best Regards, J. arch/arm/mach-at91/at91sam9g45_reset.S | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/mach-at91/at91sam9g45_reset.S b/arch/arm/mach-at91/at91sam9g45_reset.S index 721a1a3..c40c1e2 100644 --- a/arch/arm/mach-at91/at91sam9g45_reset.S +++ b/arch/arm/mach-at91/at91sam9g45_reset.S @@ -16,11 +16,17 @@ #include "at91_rstc.h" .arm +/* + * at91_ramc_base is an array void* + * init at NULL if only one DDR controler is present in or DT + */ .globl at91sam9g45_restart at91sam9g45_restart: ldr r5, =at91_ramc_base @ preload constants ldr r0, [r5] + ldr r5, [r5, #4] @ ddr1 + cmp r5, #0 ldr r4, =at91_rstc_base ldr r1, [r4] @@ -30,6 +36,8 @@ at91sam9g45_restart: .balign 32 @ align to cache line + strne r2, [r5, #AT91_DDRSDRC_RTR] @ disable DDR1 access + strne r3, [r5, #AT91_DDRSDRC_LPR] @ power down DDR1 str r2, [r0, #AT91_DDRSDRC_RTR] @ disable DDR0 access str r3, [r0, #AT91_DDRSDRC_LPR] @ power down DDR0 str r4, [r1, #AT91_RSTC_CR] @ reset processor