[U-Boot-Users] [PATCH 2/7 v3] NAND_CMD_READOOB is not supported by all chips, read OOB with the page instead

[Scott Wood]

Guennadi Liakhovetski wrote:
> On Tue, 5 Aug 2008, Scott Wood wrote:
>> Are you saying that your NAND chip can't read the OOB by issuing READ0
>> with the appropriate column address?  Which chip is this, and where can I
>> find a manual?
> 
> At least, this is how I understood it, I might be wrong though:
> 
> http://download.micron.com/pdf/datasheets/flash/nand/2_4_8gb_nand_m49a.pdf
> 
> pages 21, 22.

The READ0 command says, "Starting from the initial column address and 
going to the end of the page, read the data by repeatedly pulsing RE# at 
the maximum tRC rate (see Figure 14)."  That looks normal...  have you 
tried it?

IIUC, the "complete page of data" refers to the transfer from the NAND 
storage to the chip's page buffer, not to the transfer from the buffer 
to the CPU.

-Scott