Hi
I would like to add a new NAND flash type to u-boot and have some problems with it. The type is
MT29F16G08CBABA – Page size x8: 4320 bytes (4096 + 224 bytes) – Block size: 256 pages (1024K + 56K bytes) – Plane size: 2 planes x 1024 blocks per plane – Device size: 16Gb: 2048 blocks
The NAND subsystem is configured as follows
#define CONFIG_NAND_MXC #define CONFIG_NAND_MXC_V1_1 #define CONFIG_MXC_NAND_REGS_BASE (0xBB000000) #define CONFIG_SYS_MAX_NAND_DEVICE 1 #define CONFIG_SYS_NAND_BASE (0xBB000000) #define CONFIG_MXC_NAND_HWECC #define CONFIG_SYS_NAND_LARGEPAGE
The NAND is connected (8 bit wide) to an iMX25 which is booting from NOR. So the NAND is only a mass storage device. I am able to read the ID of the chip.
2Ch 48h 04h 46h 85h
I then added the following entry to the nand_flash_ids[] table
{"NAND 2GiB 3,3V 8-bit", 0x48, 0, 2048, 0, LP_OPTIONS},
Before getting to the u-boot prompt I get the following message:
NAND: NAND device: Manufacturer ID: 0x2c, Chip ID: 0x48 (Micron NAND 2GiB 3,3V 8-bit) NAND bus width 8 instead 16 bit
This is caused by bit 6 in id byte 4 which tells that the device is 16 bit wide organized and the iMX specific part of the NAND system which tells the generic system that the device is connected via a 8 bit bus which is obviously correct as the flash chip only has 8 data lines.
Is there anything I am doing wrong here?
Thanks, Matthias