[U-Boot] [PATCH 2/5] mtd/nand: Fixup for support ONFI detect

[Shengzhou Liu]

In the past the ONFI never worked dut to u-boot aborted when nand device id
not found in ids table. Now if not found in ids table, u-boot still continues
to detect by ONFI way.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu at freescale.com>
---
 drivers/mtd/nand/nand_base.c |   26 ++++++++++++++++----------
 1 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 6aac6a2..017ff5d 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2592,10 +2592,17 @@ static const struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
 		if (*dev_id == type->id)
 			break;
 
+	if (!type->name || !type->pagesize) {
+		/* Check if chip is ONFI compliant */
+		ret = nand_flash_detect_onfi(mtd, chip, &busw);
+		if (ret)
+			goto ident_done;
+	}
+
 	if (!type->name) {
 		/* supress warning if there is no nand */
 		if (*maf_id != 0x00 && *maf_id != 0xff &&
-		    *dev_id  != 0x00 && *dev_id  != 0xff)
+			*dev_id  != 0x00 && *dev_id  != 0xff)
 			printk(KERN_INFO "%s: unknown NAND device: "
 				"Manufacturer ID: 0x%02x, Chip ID: 0x%02x\n",
 				__func__, *maf_id, *dev_id);
@@ -2608,14 +2615,19 @@ static const struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
 	chip->chipsize = (uint64_t)type->chipsize << 20;
 	chip->onfi_version = 0;
 
-	ret = nand_flash_detect_onfi(mtd, chip, &busw);
-	if (!ret)
-		nand_flash_detect_non_onfi(mtd, chip, type, &busw);
+	nand_flash_detect_non_onfi(mtd, chip, type, &busw);
 
 	/* Get chip options, preserve non chip based options */
 	chip->options &= ~NAND_CHIPOPTIONS_MSK;
 	chip->options |= type->options & NAND_CHIPOPTIONS_MSK;
 
+	/* Check if chip is a not a samsung device. Do not clear the
+	 * options for chips which are not having an extended id.
+	 */
+	if (*maf_id != NAND_MFR_SAMSUNG && !type->pagesize)
+		chip->options &= ~NAND_SAMSUNG_LP_OPTIONS;
+
+ident_done:
 	/*
 	 * Set chip as a default. Board drivers can override it, if necessary
 	 */
@@ -2657,12 +2669,6 @@ static const struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
 	chip->badblockpos = mtd->writesize > 512 ?
 		NAND_LARGE_BADBLOCK_POS : NAND_SMALL_BADBLOCK_POS;
 
-	/* Check if chip is a not a samsung device. Do not clear the
-	 * options for chips which are not having an extended id.
-	 */
-	if (*maf_id != NAND_MFR_SAMSUNG && !type->pagesize)
-		chip->options &= ~NAND_SAMSUNG_LP_OPTIONS;
-
 	/* Check for AND chips with 4 page planes */
 	if (chip->options & NAND_4PAGE_ARRAY)
 		chip->erase_cmd = multi_erase_cmd;
-- 
1.6.4