On Tuesday 22 November 2011 16:11:20 Scott Wood wrote: > On 11/22/2011 03:03 PM, Mike Frysinger wrote: > > On Tuesday 22 November 2011 03:54:14 Shengzhou Liu wrote: > >> In some NAND controllers there is a size limitation of RAM buffer(2K > >> bytes). To support large-page NAND chips with greater than 2K pagesize, > >> we need a large buffer, but we don't know pagesize before calling > >> nand_scan_ident(), for more flexible and to identify different cases of > >> large-page greater than 2K bytes, we have a board_nand_init_tail() > >> between nand_scan_ident() and nand_scan_tail(). > > > > iirc, newer Linux mtd tree handles this better by breaking up the code > > paths so individual drivers can call things in the right order. perhaps > > we should update our mtd stack so we can do that ? > > We already have that on the mtd side -- this patch uses it. The issue > is the U-Boot glue code calling nand_scan() rather than letting the > drivers control the process. > > This patch is less intrusive than changing all the drivers, but if > someone wants to actually do that (without breaking anything), or more > realistically set up a transition mechanism, that'd be great. :-)
ok, so it is a short coming in the current u-boot mtd framework that we should look at migrating away from. no, i'm not volunteering to take this on :). -mike
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