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jz4780 AIC allow selecting internal/external codec at runtime

Authored by jmcneill on Dec 29 2016, 12:43 AM.



The JZ4780 I2S can feed either the internal audio codec or the HDMI TX, but not both at the same time. With this patch:

  • Add a dev.pcm.0.internal_codec sysctl node for selecting between internal and external codec
  • Changes playback sample rate from 96kHz to 48kHz for HDMI compatibility
  • Enable i2s clock on codec access

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rS FreeBSD src repository
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Event Timeline

jmcneill updated this revision to Diff 23363.Dec 29 2016, 12:43 AM
jmcneill retitled this revision from to jz4780 AIC allow selecting internal/external codec at runtime.
jmcneill updated this object.
jmcneill edited the test plan for this revision. (Show Details)
jmcneill added reviewers: br, kan, MIPS.
jmcneill set the repository for this revision to rS FreeBSD src repository.
jmcneill added a project: MIPS.
br accepted this revision.Dec 29 2016, 1:12 PM
br edited edge metadata.

looks good and useful. thanks!

This revision is now accepted and ready to land.Dec 29 2016, 1:12 PM
This revision was automatically updated to reflect the committed changes.