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List:       uclinux-dev
Subject:    Re: [uClinux-dev] [PATCH 3/3] m68knommu: Add ethernet driver for MCF547x/MCF548x
From:       Greg Ungerer <gerg () snapgear ! com>
Date:       2012-10-09 6:12:44
Message-ID: 5073C05C.2080809 () snapgear ! com
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Hi Philippe,

On 05/10/12 01:03, Philippe De Muyter wrote:
> On Thu, Oct 04, 2012 at 04:56:01PM +0200, Philippe De Muyter wrote:
>> On Thu, Oct 04, 2012 at 11:33:32PM +1000, Greg Ungerer wrote:
>>>
>>> My biggest concern is the amount of MCD/DMA support code. And it is
>>> all done quite differently to everything else in the kernel. We may
>>> get a bit of push back from kernel folk who look after DMA.
>>
>> Actually, there is already a similar code in arch/powerpc/sysdev/bestcomm
>> (also from freescale, maybe an identical part, but I did not find any
>> usable doc), but the powerpc folks kept that hidden in the arch/powerpc
>> tree, instead of installing it in drivers/dma.
>
> The MCD DMA or DMA FEC code from freescale has a comment implying that this
> was first used in the MPC8220 part.  And Montavista has a MPC8220 port, but
> I did not find it, so I do not know where they installed the MCD DMA driver.

Ok, looks like there is a bit a variance in all this.
Probably the best thing to do is post the patches on the linux kernel
mailing list then, asking for direction on a dma driver.

I have no problem with it going into the arch/m68k area. So that is
always an option.

Regards
Greg


-- 
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Greg Ungerer  --  Principal Engineer        EMAIL:     gerg@snapgear.com
SnapGear Group, McAfee                      PHONE:       +61 7 3435 2888
8 Gardner Close                             FAX:         +61 7 3217 5323
Milton, QLD, 4064, Australia                WEB: http://www.SnapGear.com
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