On 08/18/2011 12:00 PM, Matthieu CASTET wrote: > b35...@freescale.com a écrit : >> From: Liu Shuo <b35...@freescale.com> >> >> 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 ?
That would be more complicated given the statefulness of the interface, for no real benefit. > Even better send the first 2K and then if your controller allow it send the > remaining 2K without command/address phase. IIRC Shuo tried this first and couldn't make it work. -Scott _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
