From owner-p4-projects@FreeBSD.ORG Thu Jan 11 04:52:11 2007 Return-Path: X-Original-To: p4-projects@freebsd.org Delivered-To: p4-projects@freebsd.org Received: by hub.freebsd.org (Postfix, from userid 32767) id 250F116A47C; Thu, 11 Jan 2007 04:52:11 +0000 (UTC) X-Original-To: perforce@freebsd.org Delivered-To: perforce@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 03BA916A417 for ; Thu, 11 Jan 2007 04:52:11 +0000 (UTC) (envelope-from imp@bsdimp.com) Received: from harmony.bsdimp.com (vc4-2-0-87.dsl.netrack.net [199.45.160.85]) by mx1.freebsd.org (Postfix) with ESMTP id B3F1113C455 for ; Thu, 11 Jan 2007 04:52:10 +0000 (UTC) (envelope-from imp@bsdimp.com) Received: from localhost (localhost [127.0.0.1]) by harmony.bsdimp.com (8.13.4/8.13.4) with ESMTP id l0B4nArF061817; Wed, 10 Jan 2007 21:49:10 -0700 (MST) (envelope-from imp@bsdimp.com) Date: Wed, 10 Jan 2007 21:49:23 -0700 (MST) Message-Id: <20070110.214923.-311943684.imp@bsdimp.com> To: ticso@cicely.de, ticso@cicely12.cicely.de From: "M. Warner Losh" In-Reply-To: <20070110091917.GF80390@cicely12.cicely.de> References: <200701100656.l0A6uuTm065800@repoman.freebsd.org> <20070110091917.GF80390@cicely12.cicely.de> X-Mailer: Mew version 4.2 on Emacs 21.3 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-2.0 (harmony.bsdimp.com [127.0.0.1]); Wed, 10 Jan 2007 21:49:10 -0700 (MST) Cc: perforce@freebsd.org Subject: Re: PERFORCE change 112700 for review X-BeenThere: p4-projects@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: p4 projects tree changes List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 11 Jan 2007 04:52:11 -0000 In message: <20070110091917.GF80390@cicely12.cicely.de> Bernd Walter writes: : On Wed, Jan 10, 2007 at 06:56:56AM +0000, Warner Losh wrote: : > http://perforce.freebsd.org/chv.cgi?CH=112700 : > : > Change 112700 by imp@imp_lighthouse on 2007/01/10 06:56:33 : > : > MF FreeBSD-tsc-6: slow down spi bus enough to make the dataflash : > parts reliable on read. MCK / 2 is too fast. I think MCK / 4 : > would work too, but MCK / 20 was rock solid. : > : > I think this works in the boot loader because we're running with : > the caches off, slowing things down, but I am actually a bit : > baffled. Maybe I just have a bad board... : : Mmm - you have a 'D' type flash, which allows 33MHz in low frequency : mode. : My 'C' type allows 33MHz as well. : So in theory MCK/2 (30MHz) should work. : Older 'B' type max out at 20MHz. : I've just used flash access in the bootloader however. Hmmm, MCK is 60MHz? I thought it was 200MHz.... Warner : > Affected files ... : > : > .. //depot/projects/arm/src/sys/arm/at91/at91_spi.c#16 edit : > : > Differences ... : > : > ==== //depot/projects/arm/src/sys/arm/at91/at91_spi.c#16 (text+ko) ==== : > : > @@ -115,7 +115,7 @@ : > WR4(sc, SPI_MR, (0xf << 24) | SPI_MR_MSTR | SPI_MR_MODFDIS | : > (0xE << 16)); : > : > - WR4(sc, SPI_CSR0, SPI_CSR_CPOL | (4 << 16) | (2 << 8)); : > + WR4(sc, SPI_CSR0, SPI_CSR_CPOL | (4 << 16) | (20 << 8)); : > WR4(sc, SPI_CR, SPI_CR_SPIEN); : > : > WR4(sc, PDC_PTCR, PDC_PTCR_TXTDIS); : : -- : B.Walter http://www.bwct.de http://www.fizon.de : bernd@bwct.de info@bwct.de support@fizon.de :