[alsa-devel] [PATCH 2/4] ASoC: Add support for the Analog Devices AXI-I2S core

[Lars-Peter Clausen]

On 11/29/2013 03:27 PM, Mark Brown wrote:
> On Fri, Nov 29, 2013 at 02:04:48PM +0100, Lars-Peter Clausen wrote:
> 
>> We only use it on ZYNQ and Microblaze though. And people have complained in
>> the past about symbols that are viable on their platform, but are not
>> relevant for their platform. And to use the core on a different FPGA
>> platform will most likely require changes to the core, unless the other FPGA
>> also has a PL330 DMA interface. So I'd prefer to only make it avaiable on
>> ZYNQ and Microblaze right now.
> 
> Is it really restricted to PL330 at the hardware level?  I don't recall
> anything too fancy in the datasheet there.

Yes, it is using the PL330 peripheral request interface.  See
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0424a/index.html
and
https://github.com/analogdevicesinc/fpgahdl_xilinx/blob/master/cf_lib/edk/pcores/adi_common_v1_00_a/hdl/vhdl/pl330_dma_fifo.vhd

- Lars