From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail9.teraoka.com.sg ([152.101.95.36] helo=mail.teraoka.com.sg) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YndBo-0001hT-Hg for linux-mtd@lists.infradead.org; Thu, 30 Apr 2015 01:22:57 +0000 From: "Tee Zhen Cong" To: "'Han Xu'" References: <000c01d08261$9726b7c0$c5742740$@teraoka.com.sg> In-Reply-To: Subject: RE: nandtest error Date: Thu, 30 Apr 2015 09:22:24 +0800 Message-ID: <000101d082e4$1ecc1530$5c643f90$@teraoka.com.sg> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Language: en-sg Cc: linux-mtd@lists.infradead.org List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi Han Xu, I do not have fsl and the dts in my kernel version. Is there any other way I can fix it in kernel source code? Thank you. Regards, zc -----Original Message----- From: linux-mtd [mailto:linux-mtd-bounces@lists.infradead.org] On Behalf Of Han Xu Sent: Thursday, 30 April, 2015 2:36 AM To: Tee Zhen Cong Cc: linux-mtd@lists.infradead.org Subject: Re: nandtest error On Wed, Apr 29, 2015 at 4:48 AM, Tee Zhen Cong wrote: > Hi all, > I am using imx6SOLO to interface with a new 32Gb NAND flash from > MICRON, MT29F32G08CBADA. > After applying the patch to truncate the remaining bytes out of the > power-of-2, imx6SOLO is able to detect and recognize the NAND flash. > [ 0.346874] ONFI flash detected > [ 0.347012] ONFI param page 0 valid > [ 0.347019] nand: onfi confirmed > [ 0.347035] NAND device: Manufacturer ID: 0x2c, Chip ID: 0x44 (Micron > MT29F32G08CBADAWP) > [ 0.349811] Bad block table found at page 524032, version 0x01 > [ 0.352254] Bad block table found at page 523776, version 0x01 > [ 0.354979] Creating 3 MTD partitions on "gpmi-nand": > [ 0.354991] 0x000000000000-0x000000600000 : "kobs-ng" > [ 0.355750] 0x000000600000-0x000000a00000 : "kernel" > [ 0.356404] 0x000000a00000-0x000100000000 : "fs" > [ 0.357165] --------------------------------------- > [ 0.357173] NFC Geometry (used by BCH) > [ 0.357179] --------------------------------------- > [ 0.357185] ECC Strength : 56 The default ecc value beyond the the BCH capability(upto 40bit). Please add fsl,use-minimum-ecc = <1>; in dts nand portion. > [ 0.357190] Page Size in Bytes : 8936 > [ 0.357195] Metadata Size in Bytes : 10 > [ 0.357200] ECC Chunk Size in Bytes: 1024 > [ 0.357205] ECC Chunk Count : 8 > [ 0.357210] Payload Size in Bytes : 8192 > [ 0.357215] Auxiliary Size in Bytes: 20 > [ 0.357220] Auxiliary Status Offset: 12 > [ 0.357225] Block Mark Byte Offset : 7545 > [ 0.357230] Block Mark Bit Offset : 0 > [ 0.357329] GPMI NAND driver registered. (IMX) > > However, when I tried to perform nandtest in my system, I always get > the error where some of the bytes read back is not the same as written in. >> nandtest /dev/mtd2 > ECC corrections: 0 > ECC failures : 0 > Bad blocks : 6 > BBT blocks : 0 > 00000000: checking... > compare failed. seed 1667286349 > Byte 0x23ff is 4f should be 47 > Byte 0x882d is db should be d9 > Byte 0x1602a is 2f should be 2d > Byte 0x39c1d is 8c should be 88 > Byte 0x66815 is 62 should be 60 > Byte 0x70833 is fb should be db > Byte 0x7742b is 34 should be 35 > Byte 0x8601c is ab should be aa > Byte 0x9c80a is b7 should be b3 > Byte 0xb141c is 59 should be 49 > Byte 0xc700f is c5 should be c7 > Byte 0xcc03c is de should be d6 > Byte 0xe1c02 is 3e should be 7e > Byte 0xe6c13 is bc should be fc > Byte 0xea016 is 67 should be 6f > Byte 0xf0441 is 73 should be 72 > Byte 0xf4026 is 59 should be 58 > Byte 0xfc410 is 76 should be 56 > Byte 0x114c40 is c6 should be c4 > Byte 0x117c1e is 42 should be 40 > Byte 0x13c037 is ea should be e2 > Byte 0x151c08 is 74 should be 75 > Byte 0x16603b is 52 should be 50 > Byte 0x182824 is b7 should be b3 > Byte 0x187832 is 88 should be 89 > Byte 0x191c40 is 48 should be 40 > Byte 0x1b7002 is 47 should be c7 > Byte 0x1cf80c is 03 should be 01 > Byte 0x1d0c24 is 10 should be 90 > Byte 0x1d1c3b is 82 should be c2 > Byte 0x1ea83d is c7 should be 87 > > It seems like for the bytes with error, there are always 1 bit errors, > and the bit location is random. If I tried to perform nandtest several > time, the address of the error bytes are different as well. > > I am using linux kernel version 3.0.35. Anybody has any idea why is > this happening? Is there any setting that I need to tweak to make it work? > Thanks. > > Regards, > zc > > > > ______________________________________________________ > Linux MTD discussion mailing list > http://lists.infradead.org/mailman/listinfo/linux-mtd/ ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/