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    SubjectRE: [PATCH v4 0/7] Add TI EMIF SDRAM controller driver
    Hi

    On Thu, 12 Apr 2012, Mohammed, Afzal wrote:

    > On Thu, Apr 12, 2012 at 18:40:45, Greg KH wrote:
    > > On Thu, Apr 12, 2012 at 12:17:49PM +0530, Santosh Shilimkar wrote:
    > > > I was hoping that we will have some thing like drivers/memory/*
    > > > but since it doesn't exist, we used drivers/misc.
    > >
    > > Why not create it? I have no objection to that, it makes it more
    > > obvious as to what this really is.
    >
    > There is another memory controller used in a few TI SoCs,
    > namely GPMC [1], do you prefer having it too there.
    >
    > As of now it is not a driver, platform code handles GPMC, a patch
    > series for converting it into a driver (but still residing in
    > platform folder) was sent a few days back [2,3].

    Probably the GPMC driver should go into a slightly different place than
    SDRC/EMIF.

    GPMC is actually a general-purpose parallel bus driver. It's used to
    interface Ethernet controllers, UARTs, FPGAs, NAND/NOR flash, SRAM, etc.
    It cannot be used to control DRAM, at least not without a separate DRAM
    controller chip.

    SDRC/EMIF are both DRAM controllers. That's all they do. They can't be
    used to control anything else. They implement DRAM refresh, etc.

    So perhaps something like drivers/memory/dram/ for the SDRAM controllers,
    and maybe drivers/memory/ for the GPMC?


    - Paul


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