From: Huang Shijie Date: Wed, 22 May 2013 02:28:27 +0000 (+0800) Subject: mtd: get the ECC info from the Extended Parameter Page X-Git-Tag: v3.12-rc1~82^2~55 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6dcbe0cdd83fb5f77be4f44c9e06c535281c375a;p=pandora-kernel.git mtd: get the ECC info from the Extended Parameter Page Since the ONFI 2.1, the onfi spec adds the Extended Parameter Page to store the ECC info. The onfi spec tells us that if the nand chip's recommended ECC codeword size is not 512 bytes, then the @ecc_bits is 0xff. The host _SHOULD_ then read the Extended ECC information that is part of the extended parameter page to retrieve the ECC requirements for this device. This patch implement the reading of the Extended Parameter Page, and parses the sections for ECC type, and get the ECC info from the ECC section. Tested this patch with Micron MT29F64G08CBABAWP. Acked-by: Pekon Gupta Signed-off-by: Huang Shijie Reviewed-and-tested-by: Brian Norris Signed-off-by: Brian Norris Signed-off-by: David Woodhouse --- Reading git-diff-tree failed