Subject: [alsa-devel] DT support for Davinci ASoC platform

From: [email-masked] (Sekhar Nori)
Date: Fri, 6 Jul 2012 18:42:36 +0530

Hi Daniel,

On 7/5/2012 9:35 PM, Daniel Mack wrote:
> On 05.07.2012 17:36, Arnd Bergmann wrote:
>> On Thursday 05 July 2012, Daniel Mack wrote:
>>> On 04.07.2012 14:48, Hebbar, Gururaja wrote:
>>>> All,
>>>>
>>>> Are there any plans or work going on for providing Device Tree Support for Davinci
>>>> ASoC?
>>>>
>>>> I am planning to add DT support for TI AM335x (McASP) and I don't want to do duplicate
>>>> task.
>>>
>>> That's good to know. But isn't there a dependency on the EDMA engine? Is
>>> that part ported yet?
>>
>> None of the dma engines are ported yet, because the generic binding for dma
>> engines is still under debate. So far, all DMA channels are described using
>> auxdata on platforms that use DT, with the exception of exynos, but that one
>> will have to change once we have the common code.
> 
> You're talking about the DT bindings here, right? But the code itself is
> also only present in TI's BSP kernel sources, and not in mainline.

AM335x uses TI EDMA which is present in mainline under mach-davinci.
Matt Porter from TI is working on moving this to DMA engine. Once that's
done the driver should be usable on AM335x too. Have a look at the wiki
page Vaibhav posted under the thread "Current state of AM33xx patches"

Thanks,
Sekhar