From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756111Ab2ICIzU (ORCPT ); Mon, 3 Sep 2012 04:55:20 -0400 Received: from metis.ext.pengutronix.de ([92.198.50.35]:36309 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752208Ab2ICIzS (ORCPT ); Mon, 3 Sep 2012 04:55:18 -0400 Date: Mon, 3 Sep 2012 10:55:17 +0200 From: Sascha Hauer To: Roland Stigge Cc: Eric =?iso-8859-15?Q?B=E9nard?= , linux-mtd@lists.infradead.org, "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" Subject: Re: mxc_nand.c on mach-imx/imx53 Message-ID: <20120903085517.GE26594@pengutronix.de> References: <5035F84E.3000901@antcom.de> <20120829074122.GV26594@pengutronix.de> <503E3331.8050203@antcom.de> <20120829172820.43bbe68e@eb-e6520> <50407E44.5080408@antcom.de> <504098A1.4050208@antcom.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <504098A1.4050208@antcom.de> X-Sent-From: Pengutronix Hildesheim X-URL: http://www.pengutronix.de/ X-IRC: #ptxdist @freenode X-Accept-Language: de,en X-Accept-Content-Type: text/plain X-Uptime: 10:53:37 up 72 days, 5 min, 74 users, load average: 1.07, 0.71, 0.49 User-Agent: Mutt/1.5.21 (2010-09-15) X-SA-Exim-Connect-IP: 2001:6f8:1178:2:21e:67ff:fe11:9c5c X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Aug 31, 2012 at 12:57:37PM +0200, Roland Stigge wrote: > On 08/31/2012 11:05 AM, Roland Stigge wrote: > > I tried to port this on top of Sascha's patches for imx53, only for mxc v3 for now, as below. > > > > Unfortunately, I still get: > > > > ... > > UnCorrectable RS-ECC Error > > UnCorrectable RS-ECC Error > > UnCorrectable RS-ECC Error > > UnCorrectable RS-ECC Error > > UnCorrectable RS-ECC Error Have you written the data you are unable to read with this driver? > > ... > > > > from mxc_nand.c's mxc_nand_correct_data_v2_v3(). Maybe there's still sth. missing in the > > error correction code? > > With the below incremental fix, it works. :-) > > Thanks, > > Roland > > PS: Will you prepare a patch for l2-mtd.git? I only have an imx53, can't test the v1/v2 etc. > configs. > > > --- linux-2.6.orig/drivers/mtd/nand/mxc_nand.c > +++ linux-2.6/drivers/mtd/nand/mxc_nand.c > @@ -1141,14 +1141,14 @@ static void mxc_nand_command(struct mtd_ > host->devtype_data->send_cmd(host, command, true); > mxc_do_addr_cycle(mtd, column, page_addr); > host->devtype_data->send_read_id(host); > - host->buf_start = column; > + host->buf_start = 0; > break; > > case NAND_CMD_PARAM: > host->devtype_data->send_cmd(host, command, true); > mxc_do_addr_cycle(mtd, column, page_addr); > host->devtype_data->send_read_param(host); > - host->buf_start = column; > + host->buf_start = 0; On what tree are you working? I cannot find a handling of NAND_CMD_PARAM in my tree. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |