From 4a5bb30ee91fdcac1f698c94825fd3532f48802d Mon Sep 17 00:00:00 2001 From: Matthieu CASTET Date: Mon, 19 Mar 2012 15:35:25 +0100 Subject: [PATCH] mtd: support ONFI multi lun NAND With onfi a flash is organized into one or more logical units (LUNs). A" logical unit (LUN) is the minimum unit that can independently execute commands and report status. Mtd does not exploit LUN, so make it see a big single flash where size is lun_size * number_of_lun. Without this patch MT29F8G08ADBDAH4 size is 512MiB instead of 1GiB. Artem: split long line on 2 shorter ones. Signed-off-by: Matthieu Castet Acked-by: Florian Fainelli Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse Signed-off-by: Huang Shijie --- drivers/mtd/nand/nand_base.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index ccad911979fd..c2dc1f0de79c 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2909,7 +2909,8 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, mtd->writesize = le32_to_cpu(p->byte_per_page); mtd->erasesize = le32_to_cpu(p->pages_per_block) * mtd->writesize; mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page); - chip->chipsize = (uint64_t)le32_to_cpu(p->blocks_per_lun) * mtd->erasesize; + chip->chipsize = le32_to_cpu(p->blocks_per_lun); + chip->chipsize *= (uint64_t)mtd->erasesize * p->lun_count; *busw = 0; if (le16_to_cpu(p->features) & 1) *busw = NAND_BUSWIDTH_16; -- 2.39.5