[Sound-open-firmware] Zephyr memory allocation from heap

[Daniel Baluta]

Hi guys,

Did you encountered any problems with memory allocations when
switching to Zephyr?

I'm facing a very strange issue with a playback pipeline with module
adapter (MP3) where
it looks like the DAI hits underruns as soon as I start the pipeline.

With normal PCM playback everything works fine.

I think it might be a problem in the sense Zephyr allocates memory
and/or Cadence
memory alignment requirements?

Looks like as soon as I change this:

-#define PLATFORM_DCACHE_ALIGN  sizeof(void *)
+#define PLATFORM_DCACHE_ALIGN  32


everything seems to work.

But I cannot find any logical explanation.