NAND 16bit ONFI problem

[Alexander Shiyan]

 Hello.

I have a problem with attach NAND UBI in 16 bit mode.
NAND works fine if I specify NAND_BUSWIDTH_16 option, but not
working with NAND_BUSWIDTH_AUTO option. In second case NAND
chip is identifyed with ONFI. Logs below.
Can anyone help me with this issue? Is it a known problem?
Thanks.
PS: Kernel 3.9.3

New chip, first start, NAND_BUSWIDTH_AUTO:

ONFI param page 0 valid
ONFI flash detected
NAND device: Manufacturer ID: 0x2c, Chip ID: 0xca (Micron MT29F2G16ABAEAWP), 256MiB, page size: 2048, OOB size: 64
Scanning device for bad blocks
Creating 1 MTD partitions on "MT29F2G16ABAEAWP":
0x000000000000-0x000010000000 : "nand-gpio"
UBI: attaching mtd4 to ubi0
UBI: scanning is finished
UBI: empty MTD device detected
UBI: attached mtd4 (name "nand-gpio", size 256 MiB) to ubi0
UBI: PEB size: 131072 bytes (128 KiB), LEB size: 129024 bytes
UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 512
UBI: VID header offset: 512 (aligned 512), data offset: 2048
UBI: good PEBs: 2048, bad PEBs: 0, corrupted PEBs: 0
UBI: user volume: 0, internal volumes: 1, max. volumes count: 128
UBI: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 2920475650
UBI: available PEBs: 2004, total reserved PEBs: 44, PEBs reserved for bad PEB handling: 40
UBI: background thread "ubi_bgt0d" started, PID 22


sync && reboot:

ONFI param page 0 valid
ONFI flash detected
NAND device: Manufacturer ID: 0x2c, Chip ID: 0xca (Micron MT29F2G16ABAEAWP), 256MiB, page size: 2048, OOB size: 64
Scanning device for bad blocks
Creating 1 MTD partitions on "MT29F2G16ABAEAWP":
0x000000000000-0x000010000000 : "nand-gpio"
UBI: attaching mtd4 to ubi0
UBI: fixable bit-flip detected at PEB 2
UBI: fixable bit-flip detected at PEB 3
UBI: fixable bit-flip detected at PEB 4
UBI: fixable bit-flip detected at PEB 5
UBI: fixable bit-flip detected at PEB 6
UBI: fixable bit-flip detected at PEB 7
...


NAND_BUSWIDTH_16:

Trying ONFI probe in 16 bits mode, aborting !
NAND device: Manufacturer ID: 0x2c, Chip ID: 0xca (Micron NAND 256MiB 3,3V 16-bit), 256MiB, page size: 2048, OOB size: 64
Scanning device for bad blocks
Creating 1 MTD partitions on "NAND 256MiB 3,3V 16-bit":
0x000000000000-0x000010000000 : "nand-gpio"
UBI: attaching mtd4 to ubi0
UBI: scanning is finished
UBI: empty MTD device detected
UBI: attached mtd4 (name "nand-gpio", size 256 MiB) to ubi0
UBI: PEB size: 131072 bytes (128 KiB), LEB size: 129024 bytes
UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 512
UBI: VID header offset: 512 (aligned 512), data offset: 2048
UBI: good PEBs: 2048, bad PEBs: 0, corrupted PEBs: 0
UBI: user volume: 0, internal volumes: 1, max. volumes count: 128
UBI: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 2573182024
UBI: available PEBs: 2004, total reserved PEBs: 44, PEBs reserved for bad PEB handling: 40
UBI: background thread "ubi_bgt0d" started, PID 23

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