[alsa-devel] [PATCH] ASoC: Add support for BCM2708

Florian Meier florian.meier at koalo.de
Wed May 22 18:08:18 CEST 2013

On 22.05.2013 17:22, Stephen Warren wrote:
> On 05/22/2013 08:10 AM, Florian Meier wrote:
>> This driver adds support for digital audio (I2S)
>> for the BCM2708 SoC that is used by the
>> Raspberry Pi. External audio codecs can be
>> connected to the Raspberry Pi via P5 header.
>> It relies on cyclic DMA engine support for BCM2708
>> that is not included in this patch.
> This SoC is actually the BCM2835, so the files should be named for that.

Actually, I changed the name several times and in the end I sticked to
but if you think it is better to use BCM2835 I am happy to agree with
you and change it.

> Upstream only uses device tree for BCM2835. Does this driver support DT?
> Where is the DT binding definition file?

I have not accomplished to use the mainline kernel and DT with the
Raspberry Pi. Do you have any introductive information about how to do this?

> I assume you're planning on sending the DMA driver upstream too? I guess
> this driver isn't useful without it.

I would like to, but it only supports cyclic DMA. Should I send it
upstream anyway? In case you are interested:


> I'll take a look at the actual patch content later.

That would be great!

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