On 17 October 2016 at 10:26, Alex Gagniuc <mr.nuke...@gmail.com> wrote:
> On Thu, Aug 20, 2015 at 6:48 AM, Michal Suchanek <hramr...@gmail.com> wrote:
>> Hello,
>>
>> On 14 August 2015 at 01:08, Alex G. <mr.nuke...@gmail.com> wrote:
>>> On 08/10/2015 07:54 AM, Michal Suchanek wrote:
>>>> On 10 August 2015 at 15:44, Olliver Schinagl <oliver+l...@schinagl.nl> 
>>>> wrote:
>>>>> Hey Michal,
>>>>>
>>>>> As without this patch, we cannot use something like mmc-spi due to the
>>>>> restriction of packet size iirc.
>>>>
>>>> With DMA we can. And since DMA will be enabled most of the time the
>>>> non-DMA code will receive little or no testing.
>>>>
>>> That was also an objection over a year ago, when this patch was first
>>> ready, and still, no DMA support is implemented. It would be amazing to
>>> have a way to run larger transfers _today_ :) .
>>
>> The dmaengine patch should get into 4.3 probably.
>>
>
> And here we are again, over one year later, up to 4.9, and still
> limited to 63 byte transfers.
>
> A very smart person just brought this up to me today:
>
> " cool, to bad spi does not work properly on allwinner..."
>

The patches are out there - eg here

https://github.com/hramrach/linux-sunxi/tree/sunxi-spi-dma-merged


I don't have time to haggle with maintainers which variant is
acceptable atm but you are free to use the thing and/or pick it up and
submit to linux.


Thanks

Michal

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