Hello,
I'm using a custom board with the AM3352 and the Starterware BSP drivers. My board uses the Hynix NAND type flash. I'm using the starterware bootloader as a starting point. With the default parameters, all I get trying to read flash is the READ_ID response values:
[0] unsigned char 0xAD [1] unsigned char 0xDC [2] unsigned char 0x90 [3] unsigned char 0x95 [4] unsigned char 0x54
Is there another example that has better timing values suitable for this Hynix device? See below for the values I'm currently using.
Thanks in advance.
John
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#define NAND_CS0_BASEADDR (0x10000000) #define NAND_CS0_REGIONSIZE (GPMC_CS_SIZE_256MB) /* TODO: modify to 512MB */ #define NAND_DATA_XFER_MODE (NAND_XFER_MODE_CPU) #define NAND_BUSWIDTH (NAND_BUSWIDTH_8BIT) #define NAND_CHIP_SELECT (NAND_CHIP_SELECT_0) #define NAND_PAGE_SIZE_IN_BYTES (NAND_PAGESIZE_2048BYTES) #define NAND_BLOCK_SIZE_IN_BYTES (NAND_BLOCKSIZE_128KB) #define NAND_NUMOF_BLK (4096) #define NAND_MANUFATURER_ID (0xAD) #define NAND_DEVICE_ID (0xDC) #define NAND_CSWROFFTIME (30) #define NAND_CSRDOFFTIME (31) #define NAND_CSONTIME (0) #define NAND_ADVONTIME (0) #define NAND_ADVAADMUXONTIME (0) #define NAND_ADVRDOFFTIME (31) #define NAND_ADVWROFFTIME (31) #define NAND_ADVAADMUXRDOFFTIME (0) #define NAND_ADVAADMUXWROFFTIME (0) #define NAND_WEOFFTIME (31) #define NAND_WEONTIME (3) #define NAND_OEAADMUXOFFTIME (31) #define NAND_OEOFFTIME (31) #define NAND_OEAADMUXONTIME (3) #define NAND_OEONTIME (1) #define NAND_RDCYCLETIME (31) #define NAND_WRCYCLETIME (31) #define NAND_RDACCESSTIME (28) #define NAND_PAGEBURSTACCESSTIME (0) #define NAND_BUSTURNAROUND (0) #define NAND_CYCLE2CYCLEDIFFCSEN (0) #define NAND_CYCLE2CYCLESAMECSEN (1) #define NAND_CYCLE2CYCLEDELAY (0) #define NAND_WRDATAONADMUXBUS (15) #define NAND_WRACCESSTIME (22)
