From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from h51baff8c.k3918.sta.perspektivbredband.net ([81.186.255.140] helo=fg-dc1.flatfrog.local) by canuck.infradead.org with esmtps (Exim 4.72 #1 (Red Hat Linux)) id 1PG6Sn-0001Bb-5f for barebox@lists.infradead.org; Wed, 10 Nov 2010 08:55:29 +0000 Message-ID: <4CDA5DF9.7050906@flatfrog.com> Date: Wed, 10 Nov 2010 09:55:21 +0100 From: Orjan Friberg MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: BeagleBoard sdrc init writes reserved values To: barebox@lists.infradead.org In sdrc_init in board-beagle.c both writel(0x1A, SDRC_REG(SYSCONFIG)); and writel(0x18, SDRC_REG(SYSCONFIG)); sets bits 4:3 in the IDLEMODE field. The OMAP3 TRM (spruf98k) defines 0x2 as the only valid value for this field, all others being marked as "reserved - do not use". board-omap3evm.c does the same thing, board-sdp343x.c does not. Anyone knows where these settings come from? Derived from an older version of the TRM? (I'm thinking there may have been a feature that was discovered to be unreliable or not working as intended so it was removed from the docs.) Thanks, Orjan -- Orjan Friberg FlatFrog Laboratories AB _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox