Re: [PATCH v3] mtd/nand : workaround for Freescale FCM to support large-page Nand chip

b35362@freescale.com a écrit :

From: Liu Shuo <redacted>

Freescale FCM controller has a 2K size limitation of buffer RAM. In order
to support the Nand flash chip whose page size is larger than 2K bytes,
we divide a page into multi-2K pages for MTD layer driver. In that case,
we force to set the page size to 2K bytes. We convert the page address of
MTD layer driver to a real page address in flash chips and a column index
in fsl_elbc driver. We can issue any column address by UA instruction of
elbc controller.

Why do you need to do that ?

When mtd send you a 4k page, why can't you write it by 2*2k pages write ?

Even better send the first 2K and then if your controller allow it send the
remaining 2K without command/address phase.


Matthieu