[U-Boot] [PATCH 4/7] mxc_nand: add nand driver for MX2/MX3

[Paul Thomas]

On Fri, Jul 3, 2009 at 12:03 PM, Paul Thomas <pthomas8589 at gmail.com> wrote:

> Hello,
>
> I'm using the imx27lite-v2 branch for our opensource imx27 board. Right now
> I'm trying to get the nand to work. I'm using a Micron 2Gb x8 part (p/n
> MT29F2G08ABDHC). When I do "nand info" I get "Device 0: NAND 256MiB 1,8V
> 8-bit, sector size 128 KiB" which is correct. mtdparts returns:
>
> device nand0 <mxc_nand.0>, # parts = 4
>  #: name                size            offset          mask_flags
>  0: IPL-SPL             0x00040000      0x00000000      0
>  1: kernel              0x00200000      0x00040000      0
>  2: rootfs              0x00b00000      0x00240000      0
>  3: userfs              0x0f2c0000      0x00d40000      0
>
> active partition: nand0,0 - (IPL-SPL) 0x00040000 @ 0x00000000
>
> defaults:
> mtdids  : nor0=physmap-flash.0,nand0=mxc_nand.0
> mtdparts:
> mtdparts=mxc_nand.0:256k(IPL-SPL),2m(kernel),11m(rootfs),-(userfs)
>
>
> But when I do other commands like fsinfo or ls I get "read_nand_cached:
> error reading nand off 0x2000 size 8192 bytes" errors.
>
> My questions are: should the current driver support this chip? Do I need to
> do anything else to prepare the mtd partitions? Is there a low level test I
> could run on the NAND?
>
> thanks,
> Paul
>

Also "nand bad" reports that all the blocks are bad, and if I do "nand
scrub" it says "Erasing at 0xffe0000 -- 100% complete.
OK", but "nand bad" still returns that all the blocks are bad.

thanks,
Paul