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    SubjectRE: [PATCH 1/5] dmaengine: add ep93xx DMA support
    On Thursday, May 26, 2011 11:38 AM, Mika Westerberg wrote:
    > On Thu, May 26, 2011 at 09:15:25AM +0200, Linus Walleij wrote:
    >> On Thu, May 26, 2011 at 6:33 AM, Mika Westerberg <mika.westerberg@iki.fi> wrote:
    >>
    >>> Do you think that we can go forward with this patch series if I drop the last
    >>> patch (spi/ep93xx: add DMA support)? This way we will have dmaengine
    >>> implementation in place, whatever SPI driver we choose to use with ep93xx.
    >>
    >> Yes and you don't have to drop any DMA support for the existing driver
    >> for me alone, now that it's in the tree it should be maintained. I only
    >> wanted to raise the issue of code duplication, not block any patches.
    >
    > Ok, so I'll keep the last patch for now.
    >
    > BTW: if we get amba-pl022 driver to work with ep93xx, do you have any ideas
    > how to proceed from there? I mean, should we convert existing users to use
    > that driver instead and finally remove the ep93xx_spi driver?

    I think the biggest hurdle with using the amba-pl022 driver is that the ep93xx
    spi peripheral does not have the registers with the pid and cid id's. Without
    those I don't think the amba bus driver will be able to match the device to
    the driver.

    Regards,
    Hartley


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