From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from relay1-v.mail.gandi.net ([217.70.178.75]) by bombadil.infradead.org with esmtp (Exim 4.69 #1 (Red Hat Linux)) id 1NfIg0-0001fu-RN for barebox@lists.infradead.org; Wed, 10 Feb 2010 19:56:50 +0000 Date: Wed, 10 Feb 2010 20:56:15 +0100 From: Matthias Kaehlcke Message-ID: <20100210195615.GE374@darwin> MIME-Version: 1.0 Content-Disposition: inline List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH] edb93xx: Fix SDRAM initialization To: barebox@lists.infradead.org Before programming the SDRAM mode registers, mode register update mode must be selected by setting the MRS bit and clearing INIT in GlConfig Signed-off-by: Matthias Kaehlcke --- board/edb93xx/sdram_cfg.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/board/edb93xx/sdram_cfg.c b/board/edb93xx/sdram_cfg.c index 9f56f72..25b214b 100644 --- a/board/edb93xx/sdram_cfg.c +++ b/board/edb93xx/sdram_cfg.c @@ -111,6 +111,11 @@ static void setup_refresh_timer(void) static void program_mode_registers(void) { + struct sdram_regs *sdram = (struct sdram_regs *)SDRAM_BASE; + + /* Select mode register update mode */ + writel(GLCONFIG_MRS | GLCONFIG_CKE, &sdram->glconfig); + PROGRAM_MODE_REG(0); #if (CONFIG_EP93XX_SDRAM_NUM_BANKS >= 2) -- 1.6.5 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox