[U-Boot] [PATCH] nand: add ID for Micron MT29F8G08A

Lucas Stach
2012-09-28T15:20:02Z

Hi Scott,

Am Donnerstag, den 27.09.2012, 17:27 -0500 schrieb Scott Wood:
> On 09/27/2012 05:19:23 PM, Lucas Stach wrote:
> > Am Donnerstag, den 27.09.2012, 17:13 -0500 schrieb Scott Wood:
> > > On 09/27/2012 05:08:03 PM, Lucas Stach wrote:
> > > > Am Donnerstag, den 27.09.2012, 16:53 -0500 schrieb Scott Wood:
> > > > > On 09/27/2012 04:49:31 PM, Lucas Stach wrote:
> > > > > > As found on the Colibri T20 engineering sample board.
> > > > > >
> > > > > > Signed-off-by: Lucas Stach <dev@lynxeye.de>
> > > > > > ---
> > > > > > drivers/mtd/nand/nand_ids.c | 1 +
> > > > > > 1 Datei ge?ndert, 1 Zeile hinzugef?gt(+)
> > > > > >
> > > > > > diff --git a/drivers/mtd/nand/nand_ids.c
> > > > b/drivers/mtd/nand/nand_ids.c
> > > > > > index 3953549..ae300fe 100644
> > > > > > --- a/drivers/mtd/nand/nand_ids.c
> > > > > > +++ b/drivers/mtd/nand/nand_ids.c
> > > > > > @@ -105,6 +105,7 @@ const struct nand_flash_dev
> > nand_flash_ids[]
> > > > = {
> > > > > > {"NAND 512MiB 3,3V 16-bit", 0xCC, 0, 512, 0,
> > LP_OPTIONS16},
> > > > > >
> > > > > > /* 8 Gigabit */
> > > > > > + {"NAND 1GiB 3,3V 8-bit", 0x38, 0, 1024, 0,
> > LP_OPTIONS},
> > > > > > {"NAND 1GiB 1,8V 8-bit", 0xA3, 0, 1024, 0,
> > LP_OPTIONS},
> > > > > > {"NAND 1GiB 3,3V 8-bit", 0xD3, 0, 1024, 0,
> > LP_OPTIONS},
> > > > > > {"NAND 1GiB 1,8V 16-bit", 0xB3, 0, 1024, 0,
> > LP_OPTIONS16},
> > > > > > --
> > > > > > 1.7.11.4
> > > > >
> > > > > Does this chip support ONFI? If so, we don't use the ID table.
> > > > >
> > > > I just rechecked, the datasheet claims the chip supports ONFI
> > 2.0, but
> > > > it does not get detected by the u-boot NAND code without the
> > entry in
> > > > the id table. CONFIG_SYS_NAND_ONFI_DETECTION is set.
> > >
> > > Could you debug it? Could there be a problem in the NAND controller
> > > (or the driver)?
> > >
> > Haven't done much in tracking this down much further. Could quite
> > possible be a bug in the Tegra nand driver, this driver isn't in tree
> > for a long time and it seems no Tegra board so far tried using ONFI.
>
> I don't see the Tegra READID code using column, which is a problem.
> Hopefully this is a driver limitation and not hardware, unlike i.MX.
>
Please disregard this patch. I've got ONFI working properly on the Tegra
and will send out a patch to enable this shortly.

Thanks,
Lucas