From 4f841f9c045926f07f005449167ce11e35d05676 Mon Sep 17 00:00:00 2001 From: juhosg Date: Sun, 10 Mar 2013 13:24:50 +0000 Subject: xburst: add support for 3.8 Signed-off-by: Gabor Juhos git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35932 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- ...-NAND-Optimize-NAND_ECC_HW_OOB_FIRST-read.patch | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 target/linux/xburst/patches-3.8/0003-NAND-Optimize-NAND_ECC_HW_OOB_FIRST-read.patch (limited to 'target/linux/xburst/patches-3.8/0003-NAND-Optimize-NAND_ECC_HW_OOB_FIRST-read.patch') diff --git a/target/linux/xburst/patches-3.8/0003-NAND-Optimize-NAND_ECC_HW_OOB_FIRST-read.patch b/target/linux/xburst/patches-3.8/0003-NAND-Optimize-NAND_ECC_HW_OOB_FIRST-read.patch new file mode 100644 index 000000000..2cc3cb00b --- /dev/null +++ b/target/linux/xburst/patches-3.8/0003-NAND-Optimize-NAND_ECC_HW_OOB_FIRST-read.patch @@ -0,0 +1,31 @@ +From b971c50dc50c07f981a1619f977e7509db9c4eac Mon Sep 17 00:00:00 2001 +From: Lars-Peter Clausen +Date: Sat, 26 Feb 2011 15:30:07 +0100 +Subject: [PATCH 03/21] NAND: Optimize NAND_ECC_HW_OOB_FIRST read + +Avoid sending unnecessary READ commands to the chip. +--- + drivers/mtd/nand/nand_base.c | 14 ++++++++++---- + 1 files changed, 10 insertions(+), 4 deletions(-) + +--- a/drivers/mtd/nand/nand_base.c ++++ b/drivers/mtd/nand/nand_base.c +@@ -1299,9 +1299,15 @@ static int nand_read_page_hwecc_oob_firs + unsigned int max_bitflips = 0; + + /* Read the OOB area first */ +- chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page); +- chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); +- chip->cmdfunc(mtd, NAND_CMD_READ0, 0, page); ++ if (mtd->writesize > 512) { ++ chip->cmdfunc(mtd, NAND_CMD_READ0, mtd->writesize, page); ++ chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); ++ chip->cmdfunc(mtd, NAND_CMD_RNDOUT, 0, -1); ++ } else { ++ chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page); ++ chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); ++ chip->cmdfunc(mtd, NAND_CMD_READ0, 0, page); ++ } + + for (i = 0; i < chip->ecc.total; i++) + ecc_code[i] = chip->oob_poi[eccpos[i]]; -- cgit v1.2.3