Re: Sequoia NAND - others missing?

Re: Sequoia NAND - others missing?

[Steve Heflin]

Are there other devices (beside the NAND Flash Controller) that exist 
on the AMCC-440EPx chip and are not supported by the current 
Linux-2.6.25 ARCH=powerpc?

thanks for your help,
Steve

At 08:18 AM 2/17/2008, Josh Boyer wrote:
>On Sun, 17 Feb 2008 06:39:43 -0500
>Steve Heflin <sheflin@newagemicro.com> wrote:
>
> > I don't see where the new powerpc architecture and drivers/mtd/nand
> > contains support for the NAND chip on the Sequoia platform.  We have
>
>It's not.
>
> > Is the Sequoia's NAND Flash Controller supported in the current 
> Linux-2.6.25?
>
>No.
>
>There are a couple different patches floating around for it, all of
>which need work.  The driver is drivers/mtd/nand/ndfc.c and work needs
>to be done to parse a device tree and present the proper platform
>devices so that driver will work.  Stefan has something like this
>somewhere, I've just been lax in getting it into my tree.
>
>Too late for .25, but I have 4 boards that use this now so I'll be a
>bit more interested in getting it into .26.
>
>josh

Re: Sequoia NAND - others missing?

[Steve Heflin]

Are there other devices (beside the NAND Flash Controller) that exist 
on the AMCC-440EPx chip and are not supported by the current 
Linux-2.6.25 ARCH=powerpc?

thanks for your help,
Steve

At 08:18 AM 2/17/2008, Josh Boyer wrote:
>On Sun, 17 Feb 2008 06:39:43 -0500
>Steve Heflin <sheflin@newagemicro.com> wrote:
>
> > I don't see where the new powerpc architecture and drivers/mtd/nand
> > contains support for the NAND chip on the Sequoia platform.  We have
>
>It's not.
>
> > Is the Sequoia's NAND Flash Controller supported in the current 
> Linux-2.6.25?
>
>No.
>
>There are a couple different patches floating around for it, all of
>which need work.  The driver is drivers/mtd/nand/ndfc.c and work needs
>to be done to parse a device tree and present the proper platform
>devices so that driver will work.  Stefan has something like this
>somewhere, I've just been lax in getting it into my tree.
>
>Too late for .25, but I have 4 boards that use this now so I'll be a
>bit more interested in getting it into .26.
>
>josh

Re: Sequoia NAND - others missing?

[Josh Boyer]

On Sun, 17 Feb 2008 10:27:22 -0500
Steve Heflin <sheflin@newagemicro.com> wrote:

> Are there other devices (beside the NAND Flash Controller) that exist 
> on the AMCC-440EPx chip and are not supported by the current 
> Linux-2.6.25 ARCH=powerpc?

i2c, GPIO, the security stuff (if your version has that), and GPT.
Thought GPT has never really been supported in any kernel that I
remember.

Patches for i2c and GPIO are floating around somewhere I think.  Just
need to get them polished up and device-tree compliant.

josh

Re: Sequoia NAND - others missing?

[Steve Heflin]

Looking at the "arch/ppc/platforms/4xx/sequoia.c" from 2.6.14 
MontaVista, I also see ECC error handling, a Serial RTC device, UART4 
to UART11. It doesn't look like those are supported in the current 
"arch/powerpc/platforms/44x/sequoia" ?

Regarding the nftd NAND driver, I see a device table hookup in 
"arch/powerpc/platforms/44x/warp-nand.c".  Am I right in saying that 
file is a perfect template from which to generate sequoia-nand.c ?

thanks,
Steve


At 03:56 PM 2/17/2008, you wrote:
>On Sun, 17 Feb 2008 10:27:22 -0500
>Steve Heflin <sheflin@newagemicro.com> wrote:
>
> > Are there other devices (beside the NAND Flash Controller) that exist
> > on the AMCC-440EPx chip and are not supported by the current
> > Linux-2.6.25 ARCH=powerpc?
>
>i2c, GPIO, the security stuff (if your version has that), and GPT.
>Thought GPT has never really been supported in any kernel that I
>remember.
>
>Patches for i2c and GPIO are floating around somewhere I think.  Just
>need to get them polished up and device-tree compliant.
>
>josh
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