* NAND device ID 0xd5 appears twice in nand_ids.c table
@ 2007-04-20 6:23 sasin
2007-04-20 20:57 ` Thomas Gleixner
0 siblings, 1 reply; 4+ messages in thread
From: sasin @ 2007-04-20 6:23 UTC (permalink / raw)
To: linux-mtd
[resending w/o "Re:", apparently a "suspicious header"]
The problem is that there is no geometry information in the ID bytes for
the older parts with page size 512 bytes and below, which is the case
for the 4MiB part. Unsure if anyone has compiled a dump of ID bytes for
the older parts so that there is some fixed pattern to rely upon to
differentiate.
^ permalink raw reply [flat|nested] 4+ messages in thread
* NAND device ID 0xd5 appears twice in nand_ids.c table
@ 2007-04-16 9:41 sasin
2007-04-16 20:20 ` Charles Manning
0 siblings, 1 reply; 4+ messages in thread
From: sasin @ 2007-04-16 9:41 UTC (permalink / raw)
To: linux-mtd
NAND device ID 0xd5 appears for a 4MiB device as well as for a 2GiB
device. So when the new 2GiB device is used, it is detected as the
older 4MiB device. Should other ID bytes perhaps be used to
differentiate between the two? This problem will continue as older
device IDs are reused in newer devices.
Best regards,
Sasi
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: NAND device ID 0xd5 appears twice in nand_ids.c table
2007-04-16 9:41 sasin
@ 2007-04-16 20:20 ` Charles Manning
0 siblings, 0 replies; 4+ messages in thread
From: Charles Manning @ 2007-04-16 20:20 UTC (permalink / raw)
To: linux-mtd; +Cc: sasin
On Monday 16 April 2007 21:41, sasin@solomon-systech.com wrote:
> NAND device ID 0xd5 appears for a 4MiB device as well as for a 2GiB
> device. So when the new 2GiB device is used, it is detected as the
> older 4MiB device. Should other ID bytes perhaps be used to
> differentiate between the two? This problem will continue as older
> device IDs are reused in newer devices.
Can't the devices be differentiated by reading the part's geometry info?
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2007-04-20 20:56 UTC | newest]
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2007-04-20 6:23 NAND device ID 0xd5 appears twice in nand_ids.c table sasin
2007-04-20 20:57 ` Thomas Gleixner
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2007-04-16 9:41 sasin
2007-04-16 20:20 ` Charles Manning
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