Re: [PATCH 0/3] Using SPI NOR flah on sunxi.

[Michal Suchanek]

On 30 April 2015 at 18:30,  <Thomas.Betker@xxxxxxxxxxxxxxxxx> wrote:
> Hello Michal:
>
>> I tried to connect a SPI NOR flash to my sunxi board and due to the
> current
>> sunxi SPI driver limitations it does not work.
>>
>> The SPI driver returns an error when more than 64 bytes are
>> transferred at once
>> due to lack of DMA support.
>
> Wouldn't it be easier to fix the SPI driver to handle transfers larger
> than 64 bytes, filling and draining the FIFO multiple times if neccessary?
> (As far as I can tell, most SPI drivers do this.)
>

Yes, the intent is to fix this by adding dma support to the driver, eventually.

The patch might be still useful for other hardware with developing SPI support.

Thanks

Michal
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