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samsung nand jffs2 errors

DISCUSSION [email protected] 1 participant 1 message Jan 19, 2007 1 message not in the archive Memory technology devices (MTD)

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Hi howhowwork

Yes i use flash_eraseall -j /dev/mtd/1 as you can see it in nanddump i just forgot to write it in message

For me its not a clear to understand what is happening because when i increase chip_delay - it not solve the problem but using delay between jffs2_check_nand_cleanmarker solve this.

I have some question:
In nand.h:
* @dev_ready: [BOARDSPECIFIC] hardwarespecific function for
accesing device ready/busy line
* If set to NULL no access to ready/busy is
available and the ready/busy information
* is read from the chip status register

But i see only using chip_delay when ready/busy pin not available:

                if (!this->dev_ready) {
                        udelay (this->chip_delay);
                        return;
                }

So i need to realise in hardwarespicific function @dev_ready read from the chip status register or this should be done in nand_base.c????? Because if first it's need to implement read things from nand_base.c in hardwarespecific function and this not good practice!!!!

thanx

Quoted 16 lines

Hi eugene
To prepare jffs2 image i use: mkfs.jffs2 -o jffs2_image -s 512 -e 16384 -d

Quoted 3 lines

jffs2_dir -p 0x4000 -n
I erase flash with "flash_eraseall /dev/mtd/1" from mtd utils and copy image to flash by nandwrite.

"flash_eraseall /dev/mtd/1 " you maybe use "flash_eraseall -j /dev/mtd/1" when jffs2 scan eraseblock ,it do not need to write the message "OOB Data:
ff ff ff ff ff ff ff ff 85 19 03 20 08 00 00 00"

howhowwork
2007-01-19