From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tony Lindgren Subject: Re: [PATCH][RFC] update flash timing on OMAP5912OSK Date: Mon, 20 Feb 2006 15:04:50 -0800 Message-ID: <20060220230450.GH30248@atomide.com> References: <20060220.132145.74756047.kaminaga@sm.sony.co.jp> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20060220.132145.74756047.kaminaga@sm.sony.co.jp> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-omap-open-source-bounces+gplao-linux-omap-open-source=gmane.org@linux.omap.com Errors-To: linux-omap-open-source-bounces+gplao-linux-omap-open-source=gmane.org@linux.omap.com To: Hiroki Kaminaga Cc: linux-omap-open-source@linux.omap.com List-Id: linux-omap@vger.kernel.org * Hiroki Kaminaga [060219 20:29]: > Hi, > > In linux-2.6.15-omap1 patch, in arch/arm/mach-omap1/board-osk.c, > EMIFS_CS3_VAL is set to 0x30003361. > > This was introduced to fix flash timing error. > http://linux.omap.com/pipermail/linux-omap-open-source/2005-July/004717.html > > On the other hand, in SectionE:Errata in EMIFS timing at: > http://omap.spectrumdigital.com/osk5912/osk5912_faq.html > EMIFS_CS3_VAL was set to 0x88013141, fixing write/read rate. > > Reading from > http://focus.ti.com/lit/ug/spru742/spru742.pdf > 3.6 EMIFS Registers, > > 0x30003361 will set read mode from "page mode, 4 word/page" to > "asynchronous read", and read from flash slowed down. > > I tested with new value 0x88013141, and works good so far. > > Here is a patch against 2.6.15-omap1 patch. Thanks, pushing today. Tony