RE: [PATCH 1/5] dmaengine: add ep93xx DMA support

[H Hartley Sweeten]

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@xxxxxx> 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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