Does DM8127 support 4-bit ecc nand flash ?

Vincent Lu70876

hi,

I have a dm8127 with 4-bit ecc nand flash, but it can't boot.

I write u-boot mini with BCH8 (nandecc hw 2) in SD booting.
But it haven't any booting message in nand flash booting.

Does dm8127 support 4-bit ecc nand flash (nandecc hw 1 is not support)?
How to write u-boot min, u-boot, kernel, file system to 4-bit ecc nand flash?

over 9 years ago

0 Pavel Botev over 9 years ago

TI__Guru**** 170625 points

Hi Vincent,

I will check this and come back to you.

Best regards,
Pavel

0 Vincent Lu70876 over 9 years ago in reply to Pavel Botev

Prodigy 110 points

Hi Pavel,

I check the bad block information in SD booting, that show 0x00000000 block as bad block.
But the block is good block before writing u-boot min with BCH8.
I have tested 4pcs, that have same status.

0 Pavel Botev over 9 years ago

TI__Guru**** 170625 points

Vincent Lu70876 said:
Does dm8127 support 4-bit ecc nand flash (nandecc hw 1 is not support)?

No, BCH4 (4-bit ECC) is not supported. See the below wiki page:

http://processors.wiki.ti.com/index.php/TI81XX_PSP_UBOOT_User_Guide#NAND_ECC_algorithm_selection

http://e2e.ti.com/support/dsp/omap_applications_processors/f/447/t/349230.aspx

Regards,
Pavel

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Does DM8127 support 4-bit ecc nand flash ?