>>>> Now, new strange things are happening!
>>>> I enabled "CONFIG_MTD_NAND_VERIFY_WRITE=y" in the kernel, and
>>>> suddenly it begun working!!
>>>> However, I get these kernel messages (alot) whenever I try to
>>>> read/write anything:
>>>>
>>>> === 8< 8< 8< ===
>>>> Writing data without ECC to NAND-FLASH is not recommended
>>>> Writing data without ECC to NAND-FLASH is not recommended
>>>> Writing data without ECC to NAND-FLASH is not recommended
>>>> Writing data without ECC to NAND-FLASH is not recommended
>>>> Reading data from NAND FLASH without ECC is not recommended
>>>> Is there really no ECC running now? I thought that config-option for
>>>> MTD did the job?
>>> You should only do this if yaffs is doing the ECC instead.
>> So, this is how I have the configuration in order to get it to work:
>>
>> YAFFS_USE_NANDECC=n
>> CONFIG_MTD_NAND_VERIFY_WRITE=y
>>
>> My questions now are then:
>> 1) Is there any ECC enabled now?
>
>
> I think it's not:
> - yaffs' ECC is disabled (YAFFS_USE_NANDECC=n)
> - from my understanding, the MTD ECC depend of your MTD NAND chip (the
> field eccmode of nand_chip,
> this value is set to NAND_ECC_NONE, NAND_ECC_SOFT, NAND_ECC_HW6_512,
> ...)
> You can only receive the message "Writing data without ECC to
> NAND-FLASH is not recommended"
> if eccmode is set to NAND_ECC_NONE.
>
> What type of nand chip you use?
Samsung K9F5608U0C - 32Mx8...
> Have tried the options CONFIG_MTD_NAND_VERIFY_WRITE=y &&
> YAFFS_USE_NANDECC=y ?
Yes... I started with;
CONFIG_USE_NANDECC=y
CONFIG_MTD_NAND_VERIFY_WRITE=n
that didn't work... Then I tried [y,y] - that didn't work either. And
finally, I ended up with [n,y] - and got alot of whinging! :-)
// Martin
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