SSI DMAC is no longer accessible via Xtensa HiFi2 ADSP
Won't Fix
Description
Since the upgrade of the kernel to 4.14.35 there are changes to the SSI interface in the RCar SoC sound driver.
Prior to these changes, the Xtensa HiFi2 ADSP subsystem was able to directly access the DMA controller in order to route audio directly out from the ADSP.
This completely breaks the Fiberdyne DSP.
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Harunobu Kurokawa
December 5, 2018 at 1:32 AM
(this comment is described in gerrit 18499)
BTW, do you have any information in HW specification?
Major
Since the upgrade of the kernel to 4.14.35 there are changes to the SSI interface in the RCar SoC sound driver.
Prior to these changes, the Xtensa HiFi2 ADSP subsystem was able to directly access the DMA controller in order to route audio directly out from the ADSP.
This completely breaks the Fiberdyne DSP.