From mboxrd@z Thu Jan 1 00:00:00 1970 From: w.sang@pengutronix.de (Wolfram Sang) Date: Thu, 30 Jun 2011 12:40:09 +0200 Subject: [PATCH v7 0/3] add the GPMI controller driver for IMX23/IMX28 In-Reply-To: <1309335878-16678-1-git-send-email-b32955@freescale.com> References: <1309335878-16678-1-git-send-email-b32955@freescale.com> Message-ID: <20110630104009.GC1997@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, Jun 29, 2011 at 04:24:35PM +0800, Huang Shijie wrote: > The general-purpose media interface(GPMI) controller is a flexible interface > to up to several NAND flashs. > > The Bose Ray-Choudhury Hocquenghem(BCH) module is a hardware ECC accelerator. > > With the help of BCH, the GPMI controller can choose to do the hardware ECC or > not. > > This driver is a _pure_ MTD NAND controller driver now. It seems writing does not work for me. I use a MX28EVK, NAND is reported as: [ 1.670000] NAND device: Manufacturer ID: 0x2c, Chip ID: 0xdc (Micron MT29F4G08ABADAWP) With ubiformat or the mtd_stresstest-module, I get stuff like this: root at device:~ ubiformat /dev/mtd0 ubiformat: mtd0 (nand), size 536870912 bytes (512.0 MiB), 4096 eraseblocks of 131072 bytes (128.0 KiB), min. I/O size 2048 bytes libscan: scanning eraseblock 4095 -- 100 % complete ubiformat: 4094 eraseblocks are supposedly empty ubiformat: 2 bad eraseblocks found, numbers: 1243, 3935 ubiformat: formatting eraseblock 2 -- 0 % complete [ 172.430000] [ start_dma_without_bch_irq : 393 ] DMA timeout!!! [ 173.430000] [ start_dma_with_bch_irq : 424 ] bch timeout!!! [ 173.430000] [ mil_ecc_write_page : 1647 ] Error in ECC-based write: -110 [ 173.440000] [ send_command : 305 ] step 1 error [ 173.440000] [ mil_cmd_ctrl : 1369 ] Chip: 0, Error -1 [ 173.450000] [ send_command : 305 ] step 1 error [ 173.450000] [ mil_cmd_ctrl : 1369 ] Chip: 0, Error -1 [ 173.460000] [ read_data : 386 ] step 1 error ... Reading works though, mtd_readtest passes. Wild guess: something wrong with the safe timings, perhaps? Regards, 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: