MTD 16M Flash module detection error?

MTD 16M Flash module detection error?

[Sleepy]

I have a flash module come with Linkup7205SDB, which got total 8 AM29LV160DT
chips on it. We use it in 32bit mode 4way interleave. But some how I only
can detect the first 8M, the kernel give me the following messages:



Physmap flash device: 1000000 at 80000000

Physically mapped flash: Found 4 x16 devices at 0x0 in 32-bit mode
Amd/Fujisu Extended Query Table v1.0 at 0x0040

Physically mapped flash: JEDEC Device ID is 0xc4. Assuming broken CFI table.

Physically mapped flash: Swapping erase regions for broken CFI table.

Number of CFI chips: 1

0: offset=0x0, size=0x40000 blocks=31

1: offset=0x7c0000, size=0x20000 blocks=1

2: offset=0x7e0000, size=0x8000 blocks=2

3: offset=0x7F0000, size=0x10000 blocks=1



Creating 2 MTD partitions on "Physically mapped flash":

0x00000000 - 0x00200000 : "MYMTD0"

mtd: Giving out device 0 to MYMTD0

0x00200000 - 0x01000000 : "MYMTD1"

mtd: partition "MYMTD1" extends beyond the end of device "Physically mapped
flash" ------ size truncated to 0x600000

mtd: Giving out device 1 to MYMTD1

.

.

.



does any one know why I can not use the other 8M on the module?

thanks

Re: MTD 16M Flash module detection error?

[David Woodhouse]

sleepygod@sina.com said:
> I have a flash module come with Linkup7205SDB, which got total 8
> AM29LV160DT chips on it. We use it in 32bit mode 4way interleave. But
> some how I only can detect the first 8M, the kernel give me the
> following messages:

> Physmap flash device: 1000000 at 80000000

> Physically mapped flash: Found 4 x16 devices at 0x0 in 32-bit mode A

OK... can you try configuring the Physmap device to probe only for the 
_second_ set of flash chips -- are they at 0x80800000?

If it finds them there, we need to add some debugging code and work out why 
it's not doing so after finding the first set.

--
dwmw2