Messages in this thread |  | | Date | Wed, 8 Oct 2014 22:24:40 +0800 | From | Huang Shijie <> | Subject | Re: [PATCH v3 0/3] mtd: nand: gpmi: add proper raw access support |
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On Tue, Sep 23, 2014 at 04:07:33PM +0200, Boris BREZILLON wrote: > Hello Huang, Brian, > > This is just a new proposal to support raw accesses in a more standard way > in the GPMI driver. > This series has been tested on an imx28 board. > > Any suggestions are welcome. > > Best Regards, > > Boris > > Changes since v2: > - fixed a bug in gpmi_move_bits > - add a raw_buffer field to be used when using raw access methods > (experienced memory corruptions when directly using page_buffer_virt > buffer) > - add raw OOB access functions
I tested this patch set today with the imx6dl-sabreauto board.
NAND: Micron MT29F64G08CBABAWP 8192MiB, MLC, page size: 8192, OOB size: 744
ECC: 40bit
The result:
[ 3672.779009] ================================================== [ 3672.784974] mtd_nandbiterrs: MTD device: 0 [ 3672.789480] mtd_nandbiterrs: MTD device size 16777216, eraseblock=2097152, page=8192, oob=744 [ 3672.798169] mtd_nandbiterrs: Device uses 1 subpages of 8192 bytes [ 3672.804554] mtd_nandbiterrs: Using page=0, offset=0, eraseblock=0 [ 3672.812497] mtd_nandbiterrs: incremental biterrors test [ 3672.818688] mtd_nandbiterrs: write_page [ 3672.825529] mtd_nandbiterrs: rewrite page [ 3672.837290] mtd_nandbiterrs: read_page [ 3672.848407] mtd_nandbiterrs: error: read failed at 0x0 [ 3672.853644] mtd_nandbiterrs: After 0 biterrors per subpage, read reported error -74 [ 3672.862932] mtd_nandbiterrs: finished successfully. [ 3672.867837] ==================================================
[ 3745.282368] ================================================== [ 3745.288227] mtd_nandbiterrs: MTD device: 0 [ 3745.292913] mtd_nandbiterrs: MTD device size 16777216, eraseblock=2097152, page=8192, oob=744 [ 3745.301897] mtd_nandbiterrs: Device uses 1 subpages of 8192 bytes [ 3745.308023] mtd_nandbiterrs: Using page=1, offset=8192, eraseblock=0 [ 3745.316778] mtd_nandbiterrs: incremental biterrors test [ 3745.323017] mtd_nandbiterrs: write_page [ 3745.328616] mtd_nandbiterrs: rewrite page [ 3745.334191] mtd_nandbiterrs: read_page [ 3745.346878] mtd_nandbiterrs: error: read failed at 0x2000 [ 3745.352352] mtd_nandbiterrs: After 0 biterrors per subpage, read reported error -74 [ 3745.361281] mtd_nandbiterrs: finished successfully. [ 3745.366173] ==================================================
Is this okay?
thanks Huang Shijie
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