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    SubjectRe: [PATCH v2] Integrated Flash Controller support
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    On Nov 29, 2011, at 3:48 PM, Scott Wood wrote:

    > On 11/29/2011 03:40 PM, Artem Bityutskiy wrote:
    >> On Thu, 2011-11-24 at 08:24 -0600, Kumar Gala wrote:
    >>> On Nov 22, 2011, at 9:41 PM, Kumar Gala wrote:
    >>>
    >>>>
    >>>> On Oct 31, 2011, at 4:38 AM, <b35362@freescale.com> <b35362@freescale.com> wrote:
    >>>>
    >>>>> From: Liu Shuo <b35362@freescale.com>
    >>>>>
    >>>>> Integrated Flash Controller supports various flashes like NOR, NAND
    >>>>> and other devices using NOR, NAND and GPCM Machine available on it.
    >>>>> IFC supports four chip selects.
    >>>>>
    >>>>> Signed-off-by: Dipen Dudhat <Dipen.Dudhat@freescale.com>
    >>>>> Signed-off-by: Scott Wood <scottwood@freescale.com>
    >>>>> Signed-off-by: Li Yang <leoli@freescale.com>
    >>>>> Signed-off-by: Liu Shuo <b35362@freescale.com>
    >>>>> ---
    >>>>> arch/powerpc/Kconfig | 4 +
    >>>>> arch/powerpc/include/asm/fsl_ifc.h | 834 ++++++++++++++++++++++++++++++++++++
    >>>>> arch/powerpc/sysdev/Makefile | 1 +
    >>>>> arch/powerpc/sysdev/fsl_ifc.c | 322 ++++++++++++++
    >>>>> 4 files changed, 1161 insertions(+), 0 deletions(-)
    >>>>> create mode 100644 arch/powerpc/include/asm/fsl_ifc.h
    >>>>> create mode 100644 arch/powerpc/sysdev/fsl_ifc.c
    >>>>
    >>>> Guys,
    >>>>
    >>>> How are we handling this patchset since it touches drivers/mtd/nand?
    >>
    >> I do not see it touching MTD from the diffstat above. I am a little bit
    >> confused why a flash controller is added to
    >> arch/powerpc/sysdev/fsl_ifc.c ?
    >
    > It's really a bus controller, with NOR, NAND, and general-purpose modes
    > settable per chipselect. The actual NAND driver goes in
    > drivers/mtd/nand, and is apparently in a separate patch (probably due to
    > separate maintenance domains).
    >
    > It's the same situation as arch/powerpc/sysdev/fsl_lbc.c versus
    > drivers/mtd/nand/fsl_elbc_nand.c and drivers/mtd/nand/fsl_upm.c.
    >
    > -Scott

    As Scott said, I was more asking about the 2nd patch in the sequence which did touch MTD. Since that one is dependent on this patch, wondering how we wanted to handle them.

    - k



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