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Date: Mon, 30 Apr 2012 14:29:55 +0200
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From: Gabriel Tisan <gabriel.tisan@gmail.com>
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Subject: Re: imx35_nand driver
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: barebox@lists.infradead.org

>> Hi !
>>
>> I try to upgrade a custom board from an old version(2009) of barebox
>> to a new one.
>>
>> But I have some problems when the nand driver is
>> loading(imx35_add_nand(&nand_info)
>>
>> After I boot with the old barebox, I use tftp to load the new version
>> of barebox in ram and at run I get this on console :
>>
>> NAND device: Manufacturer ID: 0x2c, Chip ID: 0xdc (Micron NAND 512MiB
>> 3,3V 8-bit)
>> Bad block table not found for chip 0
>> Bad block table not found for chip 0
>> Scanning device for bad blocks
>> Bad eraseblock 0 at 0x00000000
>> Bad eraseblock 1 at 0x00020000
>> Bad eraseblock 2 at 0x00040000
>> ................
>>
>> It seems that it could not find the bad block tables, although on the
>> old barebox they are found.
>>
>> Has someone an idea what I could try to go forward ?
>
> Not a good idea. Some things to check:
>
> have you played with the nand clock in your board setup (IMX_CCM_BASE +
> CCM_PDR4)?
No. I have almost the same board setup like freescale-mx35-3-stack

> do you pass hw_ecc = 1 to the nand driver? I think this was the same
> back in 2009, but I don't really know.
Yes. I use this :
struct imx_nand_platform_data nand_info = {
	.hw_ecc		= 1,
	.flash_bbt	= 1,
};

bbt_pattern has also not changed from 2009.

However thanks !

Gabriel

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