Hello !

I have problem with nand samsung flash, u boot , linux kernel could not detect it. u-boot support dev id in nand_device_id table. I use sam9x25 MC. After send Read ID command to flash, nand read data function return zeroes, so uboot couldn't detect flash device id and refuse to work with die. With oscilloscope i detect that sam9x25 send command ReadID and flash answers with correct 6 bytes. vendor, device, number of pages ... But when function read_byte starts zero data return. I check address, check SMC registers values , all correct. I mean that bootstrap could read Device ID , and I view that values through debug functions. Where is the problem?

Could it be that I built bootstrap with dataflash_config , u boot with nand_config, all binaries lies in dataflash. I mean each software configures MC by each own so it should not be any problems.

Thanks !