From mboxrd@z Thu Jan 1 00:00:00 1970 From: w.sang@pengutronix.de (Wolfram Sang) Date: Thu, 21 Jul 2011 23:50:20 +0200 Subject: [PATCH v8 0/3] add the GPMI controller driver for IMX23/IMX28 In-Reply-To: <1311230846-26437-1-git-send-email-b32955@freescale.com> References: <1311230846-26437-1-git-send-email-b32955@freescale.com> Message-ID: <20110721215020.GA25344@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org > The general-purpose media interface(GPMI) controller is a flexible interface > to up to several NAND flashs. ... > To Walfram & Artem: > About how to disable the JFFS2 to use the OOB: > I read the code, and I still have no idea about how to use the ecclayout > to do the job. Could you give me some hint? thanks. Have you checked mxc_nand.c for example? There is static struct nand_ecclayout nandv1_hw_eccoob_smallpage = { .eccbytes = 5, .eccpos = {6, 7, 8, 9, 10}, .oobfree = {{0, 5}, {12, 4}, } } defined as one layout. Now, you could define one where oobfree is empty and eccbytes as big as the oob-area. > The driver depends on another GPMI-NAND device patch set, you can find them at : > [1] http://lists.infradead.org/pipermail/linux-mtd/2011-July/037033.html > [2] http://lists.infradead.org/pipermail/linux-mtd/2011-July/037031.html > [3] http://lists.infradead.org/pipermail/linux-mtd/2011-July/037032.html > [4] http://lists.infradead.org/pipermail/linux-mtd/2011-July/037034.html > > The driver also depends on another DMA patch by Shawn: > [0] http://lists.infradead.org/pipermail/linux-mtd/2011-June/036820.html This makes it difficult for testers/reviewers. Please try to get a git-branch from Freescale or Linaro. > [4] DMA timeout issue. I use the .config created by `make mxs_defconfig` > and the bug never occur. It seems some other module has impact to the > DMA. Sadly, I can't confirm that. DMA timeout happens with my config as well as with the mxs_defconfig. ubiformat breaks immediately when trying to write. Problem is that I am away from my dev-machine for a few days. I can do limited tests remotely but not develop actively right now. But if you need logs... Thanks, Wolfram -- Pengutronix e.K. | Wolfram Sang | Industrial Linux Solutions | http://www.pengutronix.de/ | -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 198 bytes Desc: Digital signature URL: